En este artículo nos proponemos realizar una lectura de la sección «Anthropologie» de la Enzyklopädie hegeliana con el objetivo de mostrar la particular concepción de lo humano que, incluso a pesar de su autor, se desprende de ella. Para esto analizaremos algunos fenómenos (el niño en el vientre materno, el sonambulismo magnético, etc.) abordados por Hegel en dicha sección. Concluiremos que el «alma» (Seele), objeto específico de la «Anthropologie», cumple la misma función limítrofe (entre naturaleza y espíritu, sensibilidad y entendimiento, (...) etc.) que ha cumplido la imaginación a lo largo de la historia de la metafísica. (shrink)

En este artículo me propongo mostrar que el Péri Archôn de Damascio representa, más allá de las intenciones del autor, la implosión de la metafísica neoplatónica y, al mismo tiempo, el intento más riguroso pero también más desgarrador por mantenerla a flote y asegurar la fundamentación ordenada de la realidad. En este sentido, toda la obra está animada por un doble movimiento: por un lado, la postulación de un Absoluto incoordinado (lo Inefable); por el otro, la postulación en última instancia (...) de algún tipo de coordinación con el Todo. Sostendré, valiéndome de una comparación con algunas tesis de E. Lévinas, que el peligro que ha entrevisto Damascio, con una conciencia mucho más acentuada que sus predecesores, es que la postulación de lo Inefable, en tanto absolutamente incoordinado e irrelativo, conduce a la desfundamentación radical del Ser. Ante este peligro, Damascio se ha visto obligado a retroceder y a relativizar de algún modo a lo Inefable. (shrink)

El objetivo de este artículo consiste en mostrar que no basta con cuestionar las opiniones establecidas y con argumentar dialécticamente para adoptar una actitud filosófica; es preciso además matar al Padre, es decir asumir un nombre propio, un lugar de enunciación que conlleva una colisión más o menos polémica con los pensadores con quienes dialogamos. Si Sócrates representa la figura del tábano que cuestiona y persuade, el Extranjero del Sofista representa la figura del parricida. Sostendré entonces que la actitud filosófica (...) solo puede explicarse en toda su amplitud y profundidad a partir de estas dos figuras. Asimismo, mostraré que la institución académica tiende a privilegiar la figura del tábano en detrimento de la figura del parricida. (shrink)

En este artículo nos proponemos mostrar, por un lado, que resulta factible (y esclarecedor) explicar el capítulo “Of personal identity” del Treatise of Human Nature de David Hume a partir de la obra Sei personaggi in cerca d’autore de Luigi Pirandello, así como esta última obra a partir del texto de Hume; y, por otro lado, que tomando como eje la comparación de la mente con el teatro que propone Hume en dicho capítulo es también posible individuar, según el modo (...) en el que se piensa la relación del pensamiento y la experiencia con el sujeto, dos grandes corrientes en la filosofía moderna: una que podríamos denominar teatro de Autor y otra teatro sin Autor. (shrink)

En el presente artículo se realiza un análisis de ciertos aspectos del pensamiento cartesiano que están implícitos en la Quinta Parte del Discurso del Método, los que serán tomados en cuenta para acceder al alcance que tienen algunos supuestos filosóficos de la teoría lingüística de N. Chomsky. Para ésto, se desarrollan los siguientes aspectos: breve reseña de la filosofía cartesiana; resumen de la Quinta Parte del Discurso del Método; especificación de la concepción "racionalista" de la lingüística de Chomsky; determinación del (...) valor sistemático que posee su apelación al racionalismo filosófico. (shrink)

Nonostante non tutti gli studiosi concordino sul valore e sulla validità della testimonianza di Agostino, non si può oggi mettere in dubbio che questi ebbe una conoscenza molto precisa non solo della dottrina manichea, ma anche delle pratiche rituali in uso nelle comunità delle sette, e in modo particolare di quelle che si imponevano agli Uditori. Del resto, egli stesso non manca di definirsi esperto dell’affare manicheo al fine di affermare l’autorità del suo modo di procedere nella polemica.Certo non si (...) può cercare in questi testi antimanichei un’esposizione serena né uno studio sistematico del catechismo manicheo poiché tali scritti hanno il carattere di un’“opera d’assalto” che Agostino, al di là degli aspetti anche caricaturali che mette in luce esponendo la dottrina avversa, dedica a quanti, come lui, corrono il rischio di essere sedotti e intrappolati da tale dottrina eretica.Quella lunga permanenza nella setta, nove anni come lui stesso afferma, e l’attività dispiegata al suo servizio permise ad Agostino di avere una larga conoscenza dell’organizzazione interna delle comunità, delle riunioni liturgiche e della catechesi, infine dei rapporti tra le due professiones che costituivano la chiesa manichea, i laici, Uditori o Catecumeni da una parte e, dall’altra, i religiosi, Eletti o Santi, tenuti, quest’ultimi, ad osservare rigide regole ascetiche raggruppate sotto tre capi, tria signacula appunto, relativi a tre ordini di attività, corrispondenti ad altrettanti organi quali bocca, mano, seno, ai quali il perfetto manicheo apporrà come un sigillo che rispetterà scrupolosamente.In particolare, lo studio del “sigillo della bocca”, quello, cioè, che ordina di astenersi dalle cibarie carnee e sanguinolente; dal vino; dalle bevande fermentate come la birra; nonché dai pensieri malvagi; dai discorsi menzogneri, violenti o blasfemi , permette di ricostruire, sempre attraverso la polemica agostiniana, la problematicità degli aspetti legati alle pratiche e alle abitudini alimentari della setta.Apporre un sigillo alla bocca, così come alla mano o al seno, significa chiudere, per usare una metafora cara al medioevo, le porte dei sensi: occhi, orecchie, naso, bocca, mani. Viceversa, aprirle o lasciarle aperte equivale a provocare e a permettere l’irruzione al proprio interno dei “demoni esteriori”, e, quindi, esporsi a peccare. Operare la “chiusura dei sensi” significa perciò sottrarsi alle sollecitazioni della carne e del mondo, rifiutando il male e conservando, così, la propria anima integralmente pura e buona quale essa è per essenza.Di fatto, la regola dei “tre sigilli” non viene osservata nel suo rigore più stretto che dai fedeli giunti o chiamati alla perfezione, dagli “Eletti” e dai “Santi”. Meno severe sono, infatti, le leggi che regolano il comportamento dei semplici credenti, degli “Uditori” o dei “Catecumeni”. La delineazione di quella che senza dubbio si potrebbe definire una sorta di “doppia morale”, una duplice regola di condotta, emerge chiaramente nei passi relativi alle pratiche alimentari, laddove, per esempio, Agostino fa notare come agli Uditori, per esempio, sia permesso persino dedicarsi ad attività profane quali l’agricoltura e tutto ciò che ad essa consegue come seminare e raccogliere, operazioni ritenute sacrileghe dagli Eletti, o, ancora, poter mangiar carne e bere vino.Diversamente vanno, invece, le cose per i “Perfetti”, il cui regime di sussistenza è ridotto allo stretto indispensabile secondo uno stile di vita improntato al digiuno, alla preghiera e all’astinenza. Sono così loro proibiti i cibi grassi, le bevande inebrianti ed ogni gesto dannoso perpetuato nei confronti dei vegetali.Tali proibizioni alimentari, discussi da Agostino nell’oris signaculum, la cui critica occupa da sola i tre quarti dello sviluppo dedicato ai tre sigilli nel suo De moribus manichaeorum, sono fonte di grande interesse per il vescovo d’Ippona il quale non manca di prendere in esame, spesso con tono sarcastico, ciascun aspetto di questi rigidi precetti rivelandone quelle che per lui sono immancabili contraddizioni: «Smettete ... di lusingare gli ignoranti celebrando il sigillo della bocca come qualcosa di grande. A meno che per caso non riteniate il mangiare crne e il non bere vino un sigillo della bocca degno di ammirazione e lode».Il colore, l’odore e il sapore, tre criteri che guidano e orientano i manichei nella scelta dei cibi e che corrispondono ad altrettanti organi sensoriali, la vista, l’olfatto sentinella del terzo dei sensi chiamati in causa, quello del gusto, divengono per Agostino occasione non solo di riflessione ma di spunto polemico al fine di dimostrare come, spesso, limitarsi a giudicare la bontà o meno di un cibo servendosi di solo uno di questi sensi alla volta , porti a cadere in terribili errori di giudizio. Del resto, Dio non è qualcosa di materiale che possa essere percepito con i sensi ed è, dunque, assurdo ritenere che lo si possa scoprire con la vista, con l’olfatto, o con il gusto. (shrink)

In an old paper of our group in Milano a formalism was introduced for the continuous monitoring of a system during a certain interval of time in the framework of a somewhat generalized approach to quantum mechanics. The outcome was a distribution of probability on the space of all the possible continuous histories of a set of quantities to be considered as a kind of coarse grained approximation to some ordinary quantum observables commuting or not. In fact the main aim (...) was the introduction of a classical level in the context of QM, treating formally a set of basic quantities, to be considered as beables in the sense of Bell, as continuously taken under observation. However the effect of such assumption was a permanent modification of the Liouville-von Neumann equation for the statistical operator by the introduction of a dissipative term which is in conflict with basic conservation rules in all reasonable models we had considered. Difficulties were even encountered for a relativistic extension of the formalism. In this paper I propose a modified version of the original formalism which seems to overcome both difficulties. First I study the simple models of an harmonic oscillator and a free scalar field in which a coarse grain position and a coarse grained field respectively are treated as beables. Then I consider the more realistic case of spinor electrodynamics in which only certain coarse grained electric and magnetic fields are introduced as classical variables and no matter related quantities. (shrink)

This article aims at demonstrating that the theory of potency developed by Giorgio Agamben lacks a fundamental aspect. The Italian philosopher has pointed out the amphibious nature of potency. However, his analysis does not cover the act, thus failing to observe its amphibious nature. We will demonstrate that this insufficiency lies at the root of several problems –whether ontological, political, aesthetic, ethical, etc.– found in Agamben’s thinking.

RESUMEN Según Furio Jesi y Giorgio Agamben, la máquina antropológica es un dispositivo histórico que produce imágenes del hombre. En este artículo nos proponemos retomar esta categoría y mostrar que existen dos grandes modelos de máquina según la naturaleza de la imagen generada: la máquina teológica-bíblica, que funciona hasta el siglo XIX y que produce al hombre como ícono; la máquina ateológica, posterior a la muerte de Dios, que produce al hombre como fantasma. ABSTRACT According to Furio Jesi and Giorgio (...) Agamben, the anthropological machine is a historical dispositive that produces images of man. This paper aims at returning to this category and demonstrating that two models of the machine can be found depending on the nature of the image produced: the theological-biblical machine that operates until 19th century and that produces man as icon, and the a-theological machine, after disappearance of God, that produces man as phantasm. (shrink)

Resumen En este artículo nos proponemos mostrar que el nacimiento virginal de Jesús se ha constituido, en su sentido dogmático, a partir de una obliteración de la placenta. Para las culturas primitivas, la placenta era considerada un doble o un gemelo del feto. Mostraremos que el peligro de introducir la figura de la placenta en los relatos del nacimiento virginal implicaba la posibilidad de que existiese un doble o un a/ter ego del Salvador. Para nosotros, este doble o gemelo coincide (...) con la figura del Anticristo.This article aims at demonstrating that the virgin birth of Christ has been construed, in its dogmatic sense, based on the obliteration of the placenta. Primitive cultures regarded the placenta as a double or twin of the fetus. We will demonstrate that introducing the placenta into virgin birth narratives dangerously implied the potential of a double or alter ego of the Saviour. In our view, this double or twin brother refers to the Antichrist. (shrink)

Light as divine source of truth and excellence is a pervasive metaphor in St. Augustine. This paper examines the distinction between two lights and two eyes: corporeal and incorporeal light, which correspond to the bodily eye and the eye of the soul, respectively. The paper also puts forward a political reading of this light-optic tension.

En este artículo nos proponemos analizar, desde una perspectiva lógica y ontológica, la noción de una “cuarta persona de la Trinidad”, tal como aparece en el De fide orthodoxa y De imaginibus de Juan de Damasco. Sostendremos que esta “cuarta persona” pone en cuestión la lógica de la teología trinitaria. En la medida en que es irreductible a lo divino y a lo humano, así como a la materia y al espíritu, la cuarta persona posee una naturaleza extra-ontológica que exige (...) para expresarse, consecuentemente, una cuarta persona extra-gramatical más allá de la sintaxis. (shrink)

There are thirteen instances of the term schema throughout the chapter “Le panoptism”, from Surveiller et punir. We consider that the meaning of this technical term found in Foucault’s work refers to the philosophy of Kant. Gilles Deleuze is one of the few thinkers who noticed the connection between the issue of power and the Kantian schema. Considering that the diagram is analogous to the Kantian schema and the schema —as in Kritik der reinen Vernunft— is a product of imagination, (...) which is the Foucauldian term that corresponds to imagination? This question itself leads to an ontology. The aim of this paper is to demonstrate that Foucauldian archeology and genealogy require a political and historical ontology of imagination, which has been partially outlined by Deleuze, but never thought in connection with the imagination. (shrink)

En este artículo me propongo demostrar la tesis de que el hades es el logos. Para esto examinaré las nociones de psyche, eidolon y soma en la poesía homérica y el cambio semántico que sufren con Platón. Mostraré también, a partir de Hegel, que el logos implica la muerte de la cosa nombrada y un horror ante la desaparición del ser animado. Este horror encuentra su objeto específico en el cadáver. Por último, basándome en Blanchot explicaré que este miedo antropogénico (...) genera dos efectos al interior del logos: la idea y el espectro. (shrink)

En la famosa “Lettre à un critique sévère”, Gilles Deleuze sugiere que existen dos maneras de leer un libro: una que supone un proceso de interpretación y comentario y otra que supone un proceso de experimentación y devenir. En este artículo nos proponemos mostrar que la primera modalidad de lectura es característica de la filosofía entendida como especialización, mientras que la segunda es característica de la filosofía entendida como experimentación. Asimismo, mostraremos que la primera modalidad obedece a un impulso retrospectivo (...) mientras que la segunda a un impulso prospectivo. (shrink)

En Homo sacer I. Il potere sovrano e la nuda vita, Giorgio Agamben recuerda una expresión que le dirigiera Walter Benjamin a Pierre Klossowski e, indirectamente, al grupo Acéphale: vous travaillez pour le fascisme. En este artículo quisiéramos mostrar que es el pensamiento político-ontológico del propio Agamben, y también en cierto sentido el de Benjamin – quien ha influido de modo decisivo en el filósofo italiano –, el que en verdad corre el riesgo de trabajar para el fascismo. Mostraremos por (...) eso la necesidad de distinguir dos niveles de lo político: un nivel trascendental y un nivel empírico. Si no se atiende a esta distinción, argumentaremos, se corre el riesgo de trabajar, efectivamente, para el fascismo. (shrink)

Resumen El concepto de “quiasmo” es fundamental en la filosofía del “último” Merleau-Ponty. Me interesa retomar este concepto para mostrar que, en la nueva ontología esbozada en Le visible et l’invisible y en las notas de la misma época, su función guarda correspondencia con la tarea que, a lo largo de la historia de la filosofía, ha desempeñado la imaginación. En este sentido, una ontología del quiasmo supone por necesidad pensar una ontología de la imaginación. Además, este concepto permite arrojar (...) una luz nueva sobre el problema de la subjetividad.The concept of “chiasm” is central to the philosophy of the “late” Merleau-Ponty. My aim is to retrieve this concept in order to show that, within the framework of the new ontology outlined in Le visible et l’invisible and the notes written during the same period, its function corresponds to the function that imagination has performed throughout the history of philosophy. Thus, an ontology of chiasm necessarily involves reflecting upon an ontology of imagination. Furthermore, the concept of chiasm enables us to shed new light on the problem of subjectivity. (shrink)

In juxtaposition with the myth and tragedy of Ovid’s Medea, this paper investigates the possibility within the Kantian conception of agency of understanding moral evil as acting against one’s better judgment. It defends the thesis that in Kant self-deception, i. e. the intentional untruthfulness to oneself, provides the fundamental structure for choosing against the moral law. I argue that, as Kant’s thought progresses, self-deception slowly proceeds to become the paradigmatic case of moral evil. This is discussed with regard to two (...) important topics in his later moral philosophy: the doctrine of radical evil and the crucial role of the duty of truthfulness in ethics. The inquiry into Kant’s theory of conscience unfolds both against this theoretical background and in light of its historical roots in the polemic against casuistry and probabilism. This contribution closes with a brief look at the tools Kant implements to counter this tendency to self-deception in moral judgment and particularly at the role casuistry plays within his conception of moral education. (shrink)

In this paper, in line with the general framework of value-sensitive design, we aim to operationalize the general concept of “Meaningful Human Control” in order to pave the way for its translation into more specific design requirements. In particular, we focus on the operationalization of the first of the two conditions investigated: the so-called ‘tracking’ condition. Our investigation is led in relation to one specific subcase of automated system: dual-mode driving systems. First, we connect and compare meaningful human control with (...) a concept of control very popular in engineering and traffic psychology, and we explain to what extent tracking resembles and differs from it. This will help clarifying the extent to which the idea of meaningful human control is connected to, but also goes beyond, current notions of control in engineering and psychology. Second, we take the systematic analysis of practical reasoning as traditionally presented in the philosophy of human action and we adapt it to offer a general framework where different types of reasons and agents are identified according to their relation to an automated system’s behaviour. This framework is meant to help explaining what reasons and what agents play a role in controlling a given system, thereby enabling policy makers to produce usable guidelines and engineers to design systems that properly respond to selected human reasons. In the final part, we discuss a practical example of how our framework could be employed in designing automated driving systems. (shrink)

O artigo objetiva compreender como o termo “espiritualidade” tem sido utilizado na área da saúde, discutindo os problemas decorrentes e as possíveis adversidades de sua polissemia. Para tanto, dividimos o estudo em três partes. Na primeira, apresentamos as diferentes definições de “espiritualidade” nas ciências humanas, sua relação histórica com a teologia cristã, e recente ressignificação pela Nova Era. Na sequência, demonstramos como a maior parte das produções sobre a temática na área da saúde adota uma concepção reificada e essencializada de (...) espiritualidade. Na terceira, discutimos as principais fragilidades identificadas no estudo. O termo espiritualidade está sendo utilizado nas ciências médicas para que a religião adentre seus espaços, inclusive de políticas públicas, ainda que de modo secularizado. Um paralelo com a fenomenologia da religião foi traçado para demonstrar as consequências da má conceituação de uma categoria em longo prazo. Por fim, identificamos uma supervalorização da dimensão psicológica da espiritualidade em detrimento das dimensões morais e rituais. (shrink)

In this paper, I assess critically the recent debate on corrective duties across moral and legal philosophy. Two prominent positions have emerged: the Kantian rights-based view (holding that what triggers corrections is a failure to respect others' right to freedom) and the so-called continuity view (correcting means attempting to do what one was supposed to do before). Neither position, I try to show, offers a satisfactory explanation of the ground (why correct?) and content (how to correct?) of corrective duties. In (...) the final section, I suggest that it is probably better to restrict the label “corrective duties” to duties generated by interpersonal wronging. (shrink)

La evolución orgánica es objeto de discusión en los ámbitos religiosos, con defensores y detractores. Entre los científicos no existen dudas acerca de la evolución orgánica como un hecho debidamente comprobado, que incluso es admitido dentro de la Iglesia católica. Las implicancias metafísicas de este hecho científico no necesariamente abonan una visión materialista, sino todo lo contrario, e incluso tales implicancias son perfectamente compatibles con la perspectiva aristotélico-tomista y hasta refuerzan los conceptos de creación y providencia.

The brains of higher mammals are extraordinary integrative devices. Signals from large numbers of functionally specialized groups of neurons distributed over many brain regions are integrated to generate a coherent, multimodal scene. Signals from the environment are integrated with ongoing, patterned neural activity that provides them with a meaningful context. We review recent advances in neurophysiology and neuroimaging that are beginning to reveal the neural mechanisms of integration. In addition, we discuss concepts and measures derived from information theory that lend (...) a theoretical basis to the notion of complexity as integration of information and suggest new experimental tests of these concepts. (shrink)

The extended mind thesis states that the mind is not brain-bound but extends into the physical world. The philosophical debate around the thesis has mostly focused on extension towards epistemic artefacts, treating the phenomenon as a special capacity of the human organism to recruit external physical resources to solve individual tasks. This paper argues that if the mind extends to artefacts in the pursuit of individual tasks, it extends to other humans in the pursuit of collective tasks. Mind extension to (...) other humans corresponds essentially to the ‘we-mode’ of cognition, the unique power of human minds to be jointly directed at goals, intentions, states of affairs, or values (which, importantly, differs from having a ‘group mind’). Because the capacity for collective intentionality holds evolutionary and developmental primacy over human-epistemic artefacts relations, the extended mind should not be seen as a special phenomenon, but as a central aspect of the human condition. The original extended mind thesis carried important implications for how the cognitive sciences should proceed. In a version of the thesis that accommodates collective intentionality, these implications would go far deeper than originally assumed. (shrink)

I aspire to answer two questions regarding the concept of a corrective duty. The first concerns what it means to wrong others, thus triggering a demand for corrections (the ground question). The second relates to the proper content of corrective duties. I first illustrate how three prominent accounts of corrective duties—the Aristotelian model of correlativity, the Kantian idea that wronging corresponds to the violation of others’ right to freedom, and the more recent continuity view—have failed to answer the two questions (...) satisfactorily. I then introduce my proposal, which holds that we wrong others when we fail to treat their status as moral agents as a source of stringent constraints on our action. I call it the moral neglect account. Once we have identified a common aim of corrective duties (counterbalancing moral neglect), we can fill their content in the various contexts in which wronging has occurred. I conclude by observing that it is not the primary role of corrective justice to assign responsibilities for damage reparations; in fact, requests for compensation make more sense if framed in distributive rather than corrective terms. (shrink)

A constructivisation of the cut-elimination proof for sequent calculi for classical, intuitionistic and minimal infinitary logics with geometric rules—given in earlier work by the second author—is presented. This is achieved through a procedure where the non-constructive transfinite induction on the commutative sum of ordinals is replaced by two instances of Brouwer’s Bar Induction. The proof of admissibility of the structural rules is made ordinal-free by introducing a new well-founded relation based on a notion of embeddability of derivations. Additionally, conservativity for (...) classical over intuitionistic/minimal logic for the seven (finitary) Glivenko sequent classes is here shown to hold also for the corresponding infinitary classes. (shrink)

Contemporary brain reading technologies promise to provide the possibility to decode and interpret mental states and processes. Brain reading could have numerous societally relevant implications. In particular, the private character of mind might be affected, generating ethical and legal concerns. This paper aims at equipping ethicists and policy makers with conceptual tools to support an evaluation of the potential applicability and the implications of current and near future brain reading technology. We start with clarifying the concepts of mind reading and (...) brain reading, and the different kinds of mental states that could in principle be read. Subsequently, we devise an evaluative framework that is composed of five criteria-accuracy, reliability, informativity, concealability and enforceability-aimed at enabling a clearer estimation of the degree to which brain reading might be realistically deployed in contexts where mental privacy could be at stake. While accuracy and reliability capture how well a certain method can access mental content, informativity indicates the relevance the obtainable data have for practical purposes. Concealability and enforceability are particularly important for the evaluation of concerns about potential violations of mental privacy and civil rights. The former concerns the degree with which a brain reading method can be concealed from an individual’s perception or awareness. The latter regards the extent to which a method can be used against somebody’s will. With the help of these criteria, stakeholders can orient themselves in the rapidly developing field of brain reading. (shrink)

Cova et al. (2019) have tested people's beliefs on aesthetic disagreement using experiments based on questionnaires. Since the vast majority of people chose answers that are incompatible with aesthetic intersubjectivism, Cova et al. claim that the aesthetics literature is misguided in assuming that ordinary people are intersubjectivists. Contesi et al. (2024) argue that those results are not in contrast with the aesthetics literature, given that folk intersubjectivism is generally understood as an implicit commitment, rather than an explicit belief; its presence, (...) therefore, cannot be inferred from people’s “explicit avowals”. Contesi et al. support their understanding of the literature by citing passages from contemporary philosophers. I argue that these passages fail to demonstrate that folk aesthetic intersubjectivism is regarded as implicit. (shrink)

The target article misrepresents the foundations of integrated information theory and ignores many essential publications. It, thus, falls to this lead commentary to outline the axioms and postulates of IIT and correct major misconceptions. The commentary also explains why IIT starts from phenomenology and why it predicts that only select physical substrates can support consciousness. Finally, it highlights that IIT's account of experience – a cause–effect structure quantified by integrated information – has nothing to do with “information transfer.”.

Integrated information theory (IIT) starts from the essential properties of experience and translates them into requirements that any physical system must satisfy to be conscious. It argues that the physical substrate of consciousness (PSC) must constitute a maximum of irreducible, internal cause‐effect power of a specific form, and provides a calculus to determine, in principle, both the quality and the quantity of an experience. Applied to the brain, IIT predicts that the spatio‐temporal grain of the neural units constituting the PSC, (...) and the relevant neural states, are those that maximize cause‐effect power. Moreover, the PSC can shrink, move, split and disintegrate depending on various anatomical and physiological parameters. These predictions are testable with brain stimulation and recording experiments. The theory can explain parsimoniously many known facts about the relationship between consciousness and the brain, including its association with certain cortical structures, its breakdown in deep sleep, anesthesia and seizures, and its return in dreams. (shrink)

Modern color science finds its birth in the middle of the nineteenth century. Among the chief architects of the new color theory, the name of the polymath Hermann von Helmholtz stands out. A keen experimenter and profound expert of the latest developments of the fields of physiological optics, psychophysics, and geometry, he exploited his transdisciplinary knowledge to define the first non-Euclidean line element in color space, i.e., a three-dimensional mathematical model used to describe color differences in terms of color distances. (...) Considered as the first step toward a metrically significant model of color space, his work inaugurated researches on higher color metrics, which describes how distance in the color space translates into perceptual difference. This paper focuses on the development of Helmholtz’s mathematical derivation of the line element. Starting from the first experimental evidence which opened the door to his reflections about the geometry of color space, it will be highlighted the pivotal role played by the studies conducted by his assistants in Berlin, which provided precious material for the elaboration of the final model proposed by Helmholtz in three papers published between 1891 and 1892. Although fallen into oblivion for about three decades, Helmholtz’s masterful work was rediscovered by Schrödinger and, since the 1920s, it has provided the basis for all subsequent studies on the geometry of color spaces up to the present time. (shrink)