Journal ArticleDOI
Effects of instructions and drug administration on temporal resolution of paired flashes
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Signal detection analysis showed that the drug reduced sensitivity but did not affect criterion, while instructions altered criterion placement without changing sensitivity.Abstract:
Sixteen male alcoholics were shown pairs of light flashes separated by intervals ranging from 0 to 100 msec., and judged whether there were one or two flashes. Two-flash fusion theshold (TFT) was raised by administration of promazine hydrochloride, a tranquilizing drug, and was higher for strict than for lenient instructions. Signal detection analysis showed that the drug reduced sensitivity but did not affect criterion, while instructions altered criterion placement without changing sensitivity. Present address: Birkbeck College, University of London. Present address: McGill University, Montreal, Quebec, Canada.read more
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Childhood obsessive compulsive disorder.
TL;DR: Obsessive compulsive symptoms are selectively associated with several childhood onset neurologic disorders such as Tourette's disorder and Sydenham's chorea, both presumed to be basal ganglia disorders, suggesting that there may be hard-wired complex behaviors subsumed by basal Ganglia frontal cortical pathways that are inappropriately released in obsessive compulsive disorder.
Journal ArticleDOI
Redefining hypnosis: theory, methods and integration
TL;DR: In this article, an integrative perspective of brain systems in a social context includes a neuropsychological translation of the hypnotic induction and draws out the implications of orbital-frontal suppression for subjects being oblivious to embarrassment and being able to endure stage hypnosis.
Journal ArticleDOI
A comparison of the central nervous system effects of haloperidol, chlorpromazine and sulpiride in normal volunteers.
TL;DR: The anti-psychotic drug profile was characterised by an increase in the proportion of slow wave activity (delta and theta) as well as decreased alpha (8-14 Hz) and faster (beta) wave activity.
Journal ArticleDOI
Changes with the menstrual cycle in psychophysiological and self-report measures of activation.
Doreen Asso,Janine R. Braier +1 more
TL;DR: The findings suggest that the levels of activation in both the central nervous system and in the autonomic nervous system are different in the two phases of the menstrual cycle.
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Arousal and perceptual sensitivity in hypochondriacs.
References
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Book
Signal detection theory and psychophysics
David M. Green,John A. Swets +1 more
TL;DR: This book discusses statistical decision theory and sensory processes in signal detection theory and psychophysics and describes how these processes affect decision-making.
Journal ArticleDOI
Level of arousal and the subclassification of schizophrenia.
Peter H. Venables,J. K. Wing +1 more
TL;DR: The work to be described was designed to investigate further the relationships between arousal, withdrawal, and clinical condition.
Journal ArticleDOI
Intensity and contour effects in visual masking
TL;DR: A series of experiments on the detection of two sequentially presented black stimuli suggests that the nervous response to the interior of a form is different from that to its border, and that, consequently, the interaction of borders is different to that of interiors or “bodies”.
Journal ArticleDOI
Relation between signal detectability theory and the traditional procedures for measuring sensory thresholds: Estimating d' from results given by the method of constant simuli.
Michel Treisman,T. R. Watts +1 more
TL;DR: The theory of signal detectability assumes that the central effect of a stimulus varies because of physical and neural noise; consequently, the detection of a signal requires a central statistical decision procedure as mentioned in this paper.
Journal ArticleDOI
The relationship between level of skin potential and fusion of paired light flashes in schizophrenic and normal subjects
TL;DR: The present study was carried out to determine whether there was any relationship between the subjective report of threshold of fusion of paired light flashes, which on the basis of Lindsley's study might be expected to have some relationship to reticular activity, and level of skin potential.
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Relation between signal detectability theory and the traditional procedures for measuring sensory thresholds: Estimating d' from results given by the method of constant simuli.
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