Previous research has demonstrated electroencephalogram (EEG) changes in response to low-odor concentrations, resulting in near-chance detection. Such findings have been taken as evidence for olfaction without awareness. We replicated and extended previous work by examining EEG responses to water-water control, 0.0001, 0.001, 0.01, and 1 ppm isoamyl acetate (IAA) in water paired with water only. Detection was above chance (>50%) for .001 and above, and alpha decreased only to those concentrations, suggesting that EEG changes corresponded to IAA awareness. However, when (...) correct trial EEGs were compared to incorrect trial EEGs during .001 ppm, right posterior/central alpha decreased during incorrect trials and alpha decreased more globally (including frontal sites) during correct trials. These data may not reflect awareness or unawareness per se. Instead, results are discussed regarding activation of perceptual systems in the posterior region during incorrect trials and the activation of frontal action systems during a subset of correct trials. (shrink)
Some recent work in the philosophy of quantum mechanics has suggested that quantum systems can be thought of as non-separable and therefore non-individual, in some sense, in Bell and E.P.R. type situations. This suggestion is set in the context of previous work regarding the individuality of quantal particles and it is argued that such entities can be considered as individuals if their non-classical statistical correlations are understood in terms of non-supervenient relations holding between them. We conclude that such (...) relations are strongly non-supervenient in Cleland's sense and note a possible connection between this idea and the realist quantum logic programme. (shrink)
Agnes Arber's international reputation is due in part to her exceptional ability to interpret the German tradition of scholarship for the English-speaking world. The Mind and the Eye is an erudite book, revealing its author's familiarity with philosophy from Plato and Aristotle through Aquinas to Kant and Hegel; but it is not dull, because the quiet enthusiasm of the author shines through. In this book she turns from the work of a specialist in one science to those wider questions which (...) any scientist must ask at intervals. What, in short, is the relationship between the eye that sees and the mind that weighs and pronounces? An important feature of this Cambridge Science Classics reissue is the introduction provided by Professor P. R. Bell, who as a Cambridge botany student at the time that Agnes Arber was writing The Natural Philosopby of Plant Form, is uniquely able to set The Mind and the Eye in the context of contemporary biological research. (shrink)
The Bell–Kochen–Specker theorem shows that, in any Hilbert space of dimension of at least 3, it is impossible to assign noncontextual definite values to all observables in such a way that the quantum-mechanical predictions are reproduced. This leaves open the issue of what subsets of observables may be assigned definite values. Clifton has shown that, for a system of at least two continuous degrees of freedom, it is not possible to assign simultaneous noncontextual values to two coordinates and their (...) conjugate momenta. In this Letter, it is shown that, for a system of a single continuous degree of freedom, it is not possible to assign noncontextual values to the coordinate and its conjugate momenta that satisfy a continuity assumption herein called the ‘ -Product Rule’. 2002 Elsevier Science B.V. All rights reserved. (shrink)
