Maps versus clusters: different representations of auditory space in the midbrain and forebrain

被引:73
作者
Cohen, YE [1 ]
Knudsen, EI
机构
[1] Dartmouth Coll, Dept Psychol, Hanover, NH 03755 USA
[2] Stanford Univ, Sch Med, Dept Neurobiol, Stanford, CA 94305 USA
关键词
D O I
10.1016/S0166-2236(98)01295-8
中图分类号
Q189 [神经科学];
学科分类号
071006 ;
摘要
The auditory system determines the location of stimuli based on the evaluation of specific cues, The analysis begins in the tonotopic pathway, where these cues are processed in parallel, frequency-specific channels. This frequency-specific information is processed further in the midbrain and in the forebrain by specialized, space-processing pathways that integrate information across frequency channels, creating high-order neurons tuned to specific locations in space. Remarkably, the results of this integrative step are represent-ed very differently in the midbrain and forebrain: in the midbrain, space is represented in maps, whereas, in the forebrain, space is represented in clusters of similarly tuned neurons. We propose that these different representations reflect the different roles that these two brain areas have in guiding behavior.
引用
收藏
页码:128 / 135
页数:8
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