En Montaigne, el yo es producto de la pluralidad y no existe separado de la naturaleza. En Descartes, por el contrario, la “voz de la razón” justifica una soledad que renuncia al cuerpo, a los sentidos y a la voz de los demás. Según Montaigne, el saber se busca en permanente relación con el mundo, sin la expectativa de una certeza absoluta que superaría nuestra pequeñez natural. Según Descartes, la investigación individual es más segura que aquella en la que varios (...) intervienen. Sin embargo, la diferencia entre ambos pensadores no se limita al plano del conocimiento. Tiene en realidad raíces biográficas y, sobre todo, responde a dosvisiones de la condición humana profundamente contrapuestas. (shrink)

A review of research with chicks, songbirds, rodents, and nonhuman primates indicates that the brain is lateralized for a number of behavioral functions. These findings can be understood in terms of three hypothetical brain processes derived from a brain model based on general systems theory: hemispheric activation, interhemispheric inhibition, and interhemispheric coupling.Left-hemisphere activation occurs in songbirds and nonhuman primates in response to salient auditory or visual input, or when a communicative output is required. The right hemisphere is activated in rats (...) when spatial performance is required, and in chicks when they are placed in an emotion-provoking situation. In rats and chicks interhemispheric activation and inhibition occur when there is an affective component in the environment (novelty, aversive conditioning) or when an emotional response is emitted (copulation, attack, killing). An interhemispheric coupling (correlation) found in rats and rabbits implies that the hemispheres are two major components in a control system with a negative feedback loop. Early-experience variables in rats can induce laterality in a symmetric brain or facilitate its development in an already biased brain.It is predicted that functional lateralization, when present, will be similar across species: the left hemisphere will tend to be involved in communicative functions while the right hemisphere will respond to spatial and affective information; both hemispheres will often interact via activation-inhibition mechanisms when affective or emotional processes are involved. Homologous brain areas and their connecting callosal fibers must be intact at birth and must remain intact throughout development for lateralization to reach its maximum level. Injury to any portion of this unit will result in hemispheric redundancy rather than specialization. One major function of early experience is to provide stimulation during development, which acts to enhance the growth and development of the corpus callosum, thereby giving rise to a more specialized brain. (shrink)

Aim: The present work proposes the study of the neuromotor activity of the masseter-jaw-tongue articulation during diadochokinetic exercising to establish functional statistical relationships between surface Electromyography, 3D Accelerometry, and acoustic features extracted from the speech signal, with the aim of characterizing Hypokinetic Dysarthria. A database of multi-trait signals of recordings from an age-matched control and PD participants are used in the experimental study. Hypothesis: The main assumption is that information between sEMG and 3D acceleration, and acoustic features may be quantified (...) using linear regression methods. Methods: Recordings from a cohort of eight age-matched control participants and eight PD participants were collected during the utterance of a diadochokinetic exercise. The dynamic and acoustic absolute kinematic velocities produced during the exercises were estimated by acoustic filter inversion and numerical integration and differentiation of the speech signal. The amplitude distributions of the absolute kinematic and acoustic velocities are estimated to allow comparisons in terms of Mutual Information. Results: The regression results show the relationships between sEMG and dynamic and acoustic estimates. The projection methodology may help in understanding the basic neuromotor muscle activity regarding neurodegenerative speech in remote monitoring neuromotor and neurocognitive diseases using speech as the vehicular tool, and in the study of other speech-related disorders. The study also showed strong and significant cross-correlations between articulation kinematics, both for the control and the PD cohorts. The absolute kinematic variables presents an observable difference for the PD participants compared to the control group. Conclusion: Kinematic distributions derived from acoustic analysis may be useful biomarkers toward characterizing HD in neuromotor disorders providing new insights into PD. (shrink)

Chicks reared in the absence of light and rat pups reared without extra stimulation fail to exhibit behavioral laterality, implying that a threshold amount of environmental stimulation is necessary for the brain to follow an asymmetry pathway. Reverse asymmetry has been reported in the chick, but not the rat, though a sex difference resembling reverse asymmetry has been found in the rat.

Mazur & Booth have shown an association between testosterone and dominance behavior, but the strength of the relationship is not given. In addition to being statistically significant, it is also necessary that testosterone account for a meaningful proportion of the variance; a multivariate model is probably necessary. A cautionary tale from the animal literature is related.

Das hier angezeigte Buch stellt sich dar als eine repräsentative Studie zur byzantinischen Buchkunst über einen Zeitraum von mehr als anderthalb Jahrtausenden. In einem knappen Vorwort reiht Peter Schreiner es in eine bedeutende Forschungstradition ein und zugleich in die Abfolge einer „unübersehbar gewordenen Literatur“. Dabei wird zu Recht hervorgehoben, daß im Unterschied zu vielen anderen Veröffentlichungen des Faches die Buchkunst aus dem slawisch-orthodoxen Bereich voll einbezogen wird, an dessen Erforschung die Verf. mit zahlreichen Arbeiten beteiligt ist. Sie stellt in ihrer (...) eigenen Einleitung dem Leser das vorwiegend liturgische Buch als wesentliches Fundament der byzantinischen Kultur vor Augen. Skizzenhaft erläutert sie seine religiös bestimmte Würde, aus der sich zugleich seine Zierate und Illustrationen rechtfertigen. Es ist einer der Vorzüge der Darstellung, daß dem politischen und kulturellen Zentrum des Reiches Provinzen und Nachbarländer mit vollem Gewicht an die Seite treten: – Syrien, das koptische Ägypten und Äthiopien, Armenien und Georgien, Bulgarien, Rumänien, die Walachei und nicht zuletzt Rußland. (shrink)

Experimental Essays on Zhuangzi is a classic in the field. Originally published in 1983, this edition makes it available again in an expanded version, with four additional contributions, and in an updated format, with pinyin transcription, Chinese characters embedded in the text, and reference style notes. The work is a well respected textbook and essential reader in Daoist thought. It continues to constitute an essential contribution to the study of Daoism and Chinese philosophy.

Stone and Dung, Oil and Spit: Jewish Daily Life in the Time of Jesus. By Jodi Magness. Grand Rapids, Mich.: William B. Eerdmans Publishing Co., 2011. Pp. xv + 335, illus. $25.