Oversized, auditory responsive units of rostral, mid, and posterolateral thalamus.
Oversized, auditory responsive units of rostral, mid, and posterolateral thalamus.
复制标题
丘脑头侧、中部和后外侧丘脑的超大听觉反应单位。
DOI：
10.1097/00001756-199010000-00001
复制
发表时间：
1990
期刊：
影响因子：
1.7
通讯作者：
Melamed,O
中科院分区：
文献类型：
--
作者：
Chizhevsky,V;Woody,CD;Gruen,E;Melamed,O
在条件性点击刺激（CS）后，从343个单位的头端、中间和后外侧丘脑记录活动。超过40%的单位增加放电猫条件闪烁的CS。29个具有短潜伏期（<40 ms）反应的单位被细胞内注射菜豆凝集素并进行形态学鉴定; 83%具有长而厚的初级树突和较小的次级分支。几乎一半（46%）有更大的胞体比最大的以前描述的丘脑神经元的这种形态分类。结果表明，以前未识别的超大细胞类可能包含许多短潜伏期，听觉反应单位。相当数量的这些细胞（36%）投射到丘脑外的内囊，因此可能构成一个新的听觉通路之间的丘脑和皮质。
ACTIVITY was recorded from 343 units of rostral, mid, and posterolateral thalamus following a conditioned click stimulus (CS). Over 40% of units responded with increased discharge in cats conditioned to blink to the CS. Twenty-nine units with short latency (< 40 ms) responses were injected intracellularly with phaseolus lectin and identified morphologically; 83% had long, thick primary dendrites with smaller secondary branches. Almost half (46%) had larger somata than the largest previously described thalamic neurons of this morphologic classification. The results suggest that a previously unidentified class of oversized cells is likely to contain many short latency, auditory responsive units. A substantial number of these cells (36%) projected extrathalamically into the internal capsule, and thus may constitute a new auditory pathway between thalamus and cortex.