Journal ArticleDOI
Theories of associative recall.
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Most of the models developed beyond their initial hypotheses have a certain family resemblance, and it seems as if the authors may now be in possession of the basic ideas which will be needed for the understanding of one of the central problems of memory, namely the mechanism of associative recall.Abstract:
The problem of how the brain stores and retrieves information is ultimately an experimental one, and its solution will doubtless call for the combined resources of psychology, physiology and molecular biology. But it is also a problem of great theoretical sophistication; and one of the major tasks confronting the brain scientist is the construction of theoretical models which are worthy of, and open to, experimental test. In this review we shall be concerned with the latter aspect of the problem of memory, which has attracted quite a lot of attention in the last few years. It is early yet to judge the relative merits of the various models in any detail; but as we shall see, most of those which have been developed beyond their initial hypotheses have a certain family resemblance, and it seems as if we may now be in possession of the basic ideas which will be needed for the understanding of one of the central problems of memory, namely the mechanism of associative recall.read more
Citations
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Journal ArticleDOI
Synaptic enhancement in fascia dentata: Cooperativity among coactive afferents
TL;DR: Evidence is presented that long-lasting enhancement of perforant path synapses following high-frequency activity is a cooperative process requiring coactivity of a considerable number of fibers.
Journal ArticleDOI
On associative memory.
TL;DR: The information storing capacity of certain associative and auto-associative memories is calculated and the usefulness of associative memories, as opposed to conventional listing memories, is discussed — especially in connection with brain modelling.
Journal ArticleDOI
Facilitated induction of hippocampal long-lasting potentiation during blockade of inhibition
H. Wigström,B. Gustafsson +1 more
TL;DR: Study of long-lasting potentiation in the hippocampal slice preparation (CA1 region) in conditions where postsynaptic inhibition was reduced by application of γ-aminobutyric acid (GABA) receptor blockers found that in addition to their direct effect on inhibition, GABA blockers dramatically facilitated the induction ofLong- lasting potentiation.
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Neuronal assemblies
TL;DR: The concept of neuronal assembly as it has appeared in selected portions of the literature is examined and it is shown that the dynamic firing correlation can be caused either by dynamic changes in neuronal connection strengths or by the effects of an unobserved (large) pool of other neurons.
Book ChapterDOI
Reductionism, Levels of Organization, and the Mind-Body Problem
TL;DR: Sperry's position is complex and variegated, and I will be unable to discuss some of the issues raised by him in this volume and in other closely related papers.
References
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TL;DR: This article will be concerned primarily with the second and third questions, which are still subject to a vast amount of speculation, and where the few relevant facts currently supplied by neurophysiology have not yet been integrated into an acceptable theory.
Book
The perception: a probabilistic model for information storage and organization in the brain
TL;DR: The second and third questions are still subject to a vast amount of speculation, and where the few relevant facts currently supplied by neurophysiology have not yet been integrated into an acceptable theory as mentioned in this paper.
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A new microscopic principle.
TL;DR: An improvement of the resolution by one decimal wotild require a correction of the objective to four decimals, a practically hopeless task.
Journal ArticleDOI
A Theory of Cerebellar Cortex
TL;DR: A detailed theory of cerebellar cortex is proposed whose consequence is that the cerebellum learns to perform motor skills and two forms of input—output relation are described, both consistent with the cortical theory.