Saturday, October 15, 2005

Cellular aproach to cognition not enough - Eric Kandel

To understand how people tink, behave, feel and act, a cellular approach is necessary but not sufficient. It is also essential to understand how the integrative action of the brain - the simultaneous activity of discrete sets of neurons - produces cognition ... Peception is a constructive process that depends not only of the information inherent in a stimulus but also on the mental structure of the perceiver ... Cognitive psycology is concerned not simply with specifying the input-output for a particular behaviour, but also analyzing the process by which sensory information es transformed into perception and action, i.e. how a stimulus leads to a particular behavioral response.

The brain produces an integrated perception because nerve cells are wired together in precise and orderly ways according to a general plan that does not vary greatly among individuals ... connections can be altered by activity and by learning. We remenber specific events because the strucutre and function of the connections between nerve cell are modified by those events.

Principles of Neural Science, p. 382

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