任意刺激类别的脑定位：基于赫布学习的简单解释。
Brain localization for arbitrary stimulus categories: a simple account based on Hebbian learning.
作者信息
Polk T A, Farah M J
机构信息
Department of Psychology, University of Pennsylvania, Philadelphia 19104, USA.
出版信息
Proc Natl Acad Sci U S A. 1995 Dec 19;92(26):12370-3. doi: 10.1073/pnas.92.26.12370.
Abstract
A central theme of cognitive neuroscience is that different parts of the brain perform different functions. Recent evidence from neuropsychology suggests that even the processing of arbitrary stimulus categories that are defined solely by cultural conventions (e.g., letters versus digits) can become spatially segregated in the cerebral cortex. How could the processing of stimulus categories that are not innate and that have no inherent structural differences become segregated? We propose that the temporal clustering of stimuli from a given category interacts with Hebbian learning to lead to functional localization. Neural network simulations bear out this hypothesis.
摘要
认知神经科学的一个核心主题是大脑的不同部分执行不同的功能。神经心理学的最新证据表明，即使是仅由文化习俗定义的任意刺激类别（例如字母与数字）的处理，也可能在大脑皮层中发生空间上的分离。那些并非天生且没有内在结构差异的刺激类别的处理是如何变得分离的呢？我们提出，来自给定类别的刺激的时间聚类与赫布学习相互作用，从而导致功能定位。神经网络模拟证实了这一假设。
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