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Oscillatory Event-Related Brain Dynamics (Paperback, Softcover reprint of the original 1st ed. 1994)
Loot Price: R5,813
Discovery Miles 58 130
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Oscillatory Event-Related Brain Dynamics (Paperback, Softcover reprint of the original 1st ed. 1994)
Series: NATO Science Series A:, 271
Expected to ship within 10 - 15 working days
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How does the brain code and process incoming information, how does
it recog nize a certain object, how does a certain Gestalt come
into our awareness? One of the key issues to conscious realization
of an object, of a Gestalt is the attention de voted to the
corresponding sensory input which evokes the neural pattern underly
ing the Gestalt. This requires that the attention be devoted to one
set of objects at a time. However, the attention may be switched
quickly between different objects or ongoing input processes. It is
to be expected that such mechanisms are reflected in the neural
dynamics: Neurons or neuronal assemblies which pertain to one
object may fire, possibly in rapid bursts at a time. Such firing
bursts may enhance the synaptic strength in the corresponding cell
assembly and thereby form the substrate of short-term memory.
However, we may well become aware of two different objects at a
time. How can we avoid that the firing patterns which may relate to
say a certain type of move ment (columns in V5) or to a color (V 4)
of one object do not become mixed with those of another object?
Such a blend may only happen if the presentation times be come very
short (below 20-30 ms). One possibility is that neurons pertaining
to one cell assembly fire syn chronously. Then different cell
assemblies firing at different rates may code different
information."
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