In lieu of an abstract, here is a brief excerpt of the content:ROBERT ORFORD'S ATTACK ON GILES OF ROME I N TWO PREVIOUS ARTICLES, I tried to demonstrate how Robert Orford drew upon the thought of Giles of Rome in order to formulate his own explanation of hylomorphism and the so-called real distinction between essence and existence.1 Orford, it will be remembered, was one of the earliest disciples of his colleague St. Thomas Aquinas, and-more important- is the first 'llhomist we (...) know of who turned to Giles in order to gain an understanding of these basic philosophic problems, and who wove Giles's ideas into his own elaboration of what he took to be St. Thomas's position regarding them. In view of this recognition of Giles as an appropriate guide to a Thomist grasp of these issues, it is surprising to find among Orford's works the Reprobationes dfotorUJn a fratre Egidio in primum Sententiarum.2 The Reprobationes is a strange document. In it, as I shall show later, Orford seeks every opportunity to find fault with Giles. Indeed, his criticisms, hardly ever of any substance, are at times so "picky" they cause the reader to wonder as to his real purpose in writing them down in the first place. In this article, I shall review the historical context of the Reprobationes and try to show what it was about Giles of Rome that so irritated the Dominican Orford. The early catalogues contain no more than two entries for 1 See F. Kelley, "The Egidean influence in Robert Orford's doctrine on Form", Thomist, 47, 1, January, 1983, pp. 77-99, and "Two early English Thomists: Thomas Sutton and Robert Orford vs. Henry of Ghent", Thomist, 45, 3, July, 1981, pp. 345-387. 2 This work is extant in one manuscript, viz. MS. Merton 276, fol. 20ra50ra. It has been edited by A. Vella: Robert d'Orford Reprobationes dictorum a fratre Egidio in primum Sententiarum, Paris, 1968. 70 ROBERT ORFORD'S ATTACK ON GILES OF ROME 71 Orford.3 However, from references he made in his extant writings, viz., Sciendum, Contra dicta Henrici and Reprobationes, we know the titles at least of some of his other writings. As one might have expected, Orford wrote commentaries on the books of the Sentences. In addition to the references to these commentaries he mentions also a De unitate formae, Super 2 de sommo et vigilia, Super 6 de M etaphysica and De generatione. We know of Orford's part in certain disputed questions and of his sermon in rn93. Finally, we have offered our reasons elsewhere for attributing to him the opuscule entitled De natura materiae et dimensionibus interminatis.4 From the mere fact that Orford saw the necessity of writing against Giles of Rome in defense of St. Thomas Aquinas, one might have thought that in Giles one had found an antagonist of the Angelic Doctor. For a long time Giles was taken to have been not an adversary but rather a stout defender of his teacher, St. Thomas.5 The picture of Giles of Rome as the loyal Thomist, the legend as it has more recently been labelled, derived in no small measure from the erroneous ascription to him of the work which is in fact Richard Knapwell's, viz. Correctivum corruptorii 'Quare '.6 Once this mistaken ascription had been corrected and further study was done, mainly by E. Hocedez, Giles no longer appeared as having been the staunch and loyal Thomist of the legend. On the contrary, Hocedez says of him: Gilles decidement n'est pas le thomiste, clans le sens profond du mot, qui s'est donne Thomas pour Maitre et guide de sa pensee: a For a full account of what the catalogues have under Orford's name, see A. Vella, "Robert of Orford and his place in the scholastic controversies at Oxford in the late xiiith century" (Oxford Univ. B.Litt. thesis 1946), MS. B.Litt., c. 30, vol. 1, Bodleian Library, pp. 12-27. 4 See F. Kelley," The Egidean influence", pp. 90-96. 5 See F. Lajard, "Gilles de Rome", Histoire litteraire de la France, 30 (1888), pp. 421-566. 6 "Nous croyons que ce qui a le plus contribue a faire... (shrink)

The perceptual circularity demonstrated by R. Shepard with respect to hue turns out to be a sphericity of color perception based on color excitation vectors of neuronal level. The spherical color model implicitly contains information concerning generalization under color learning. Subjective color differences are “computed” in neuronal nets being represented by amplitudes of evoked potentials triggered by color change. [Shepard].

A formal neuron has been studied mathematically. The spiking behaviour of a single neuron has been considered and the influence of the other neurons has been replaced by an average activity level. Four different kinds of spiking behaviour are predicted by the model: B (bursts), C (continuous), P (periodic) and S (silent) neurons and several real neurons can be classified within these four categories. Some properties of the spiking neuron are calculated: 1) the time between spikes, 2) the spike train (...) length and 3) the silent time. Because these magnitudes can be measured in the laboratory, an experimental validation of the model is proposed. (shrink)