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The Autonomous Brain - A Neural Theory of Attention and Learning (Hardcover)
Loot Price: R4,555
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The Autonomous Brain - A Neural Theory of Attention and Learning (Hardcover)
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The behaviorist credo that animals are devices for translating
sensory input into appropriate responses dies hard. The thesis of
this pathbreaking book is that the brain is innately constructed to
initiate behaviors likely to promote the survival of the species,
and to sensitize sensory systems to stimuli required for those
behaviors. Animals attend innately to vital stimuli (reinforcers)
and the more advanced animals learn to attend to related stimuli as
well. Thus, the centrifugal attentional components of sensory
systems are as important for learned behavior as the more
conventional paths. It is hypothesized that the basal ganglia are
an important source of response plans and attentional signals.
This reversal of traditional learning theory, along with the rapid
expansion of knowledge about the brain, especially that acquired by
improved techniques for recording neural activity in behaving
animals and people, makes it possible to re-examine some long
standing psychological problems. One such problem is how the
intention to perform an act selects sensory input from relevant
objects and ensures that it alone is delivered to the motor system
to control the intended response. This is an aspect of what is
sometimes known as the binding problem: how the different features
of an observed object are integrated into a unified percept.
Another problem that has never been satisfactorily addressed is how
the brain stores information concerning temporal order, a
requirement for the production of most learned responses, including
pronouncing and writing words.
A fundamental process, the association between brain activities
representing external events, is surprisingly poorly understood at
the neural level. Most concepts have multiple associations but the
concept is not unduly corrupted by them, and usually only a single
appropriate association is aroused at a time. Furthermore, any
arbitrary pair of concepts can be instantly associated, apparently
requiring an impossibly high degree of neural interconnection. The
author suggests a substitute for the reverberating closed neuronal
loop as an explanation for the engram (active memory trace or
working memory), which may go some way to resolving these
difficulties.
Shedding new light on enduring questions, " The Autonomous Brain"
will be welcomed by a broad audience of behavioral and brain
scientists.
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