Neuron densities vary across and within cortical areas in primates

被引:251
作者
Collins, Christine E. [1 ]
Airey, David C. [2 ]
Young, Nicole A. [1 ]
Leitch, Duncan B. [3 ]
Kaas, Jon H. [1 ]
机构
[1] Vanderbilt Univ, Dept Psychol, Nashville, TN 37240 USA
[2] Vanderbilt Univ, Med Ctr, Dept Pharmacol, Nashville, TN 37232 USA
[3] Vanderbilt Univ, Med Ctr, Grad Program Neurosci, Nashville, TN 37232 USA
关键词
cell density; cortex; isotropic fractionator; neuron number; CELLULAR SCALING RULES; PROSIMIAN PRIMATE; CEREBRAL-CORTEX; VISUAL-CORTEX; NUMBER; REPRESENTATION; HETEROGENEITY; CONNECTIONS; NEOCORTEX; V3;
D O I
10.1073/pnas.1010356107
中图分类号
O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];
学科分类号
07 ; 0710 ; 09 ;
摘要
The numbers and proportion of neurons in areas and regions of cortex were determined for a single cortical hemisphere from two prosimian galagos, one New World owl monkey, one Old World macaque monkey, and one baboon. The results suggest that there is a common plan of cortical organization across the species examined here and also differences that suggest greater specializations in the Old World monkeys. In all primates examined, primary visual cortex (V1) was the most neuron-dense cortical area and the secondary visual areas had higher-than-average densities. Primary auditory and somatosensory areas tended to have high densities in the Old World macaque and baboon. Neuronal density varies less across cortical areas in prosimian galagos than in the Old World monkeys. Thus, cortical architecture varies greatly within and across primate species, but cell density is greater in cortex devoted to the early stages of sensory processing.
引用
收藏
页码:15927 / 15932
页数:6
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