DELINEATION OF MOTOR AREAS IN THE CEREBRAL CORTEX OF THE GOAT
DELINEATION OF MOTOR AREAS IN THE CEREBRAL CORTEX OF THE GOAT
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DOI：
10.1113/jphysiol.1956.sp005573
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发表时间：
1956-01-01
影响因子：
5.5
通讯作者：
LAWN, AM
中科院分区：
文献类型：
--
作者：
BELL, FR;LAWN, AM
用单极和双极电极刺激麻醉山羊的大脑皮质。只有内侧眶额极的一小块区域，包括上级和中间纵回的一部分，可以被兴奋产生躯体运动反应。从上级纵回，对侧阵挛运动很容易在前肢产生，但所有4个肢体都可能通过易化反应。同侧的嘴唇收缩只能从中间的纵回获得。通过用留置电极刺激未麻醉的山羊来证实定位。尽管这两个区域对单一脉冲刺激都有反应。有蹄动物的锥体束与灵长类动物的锥体束有关。提示山羊中纵回同侧纤维可能具有与灵长类中央前回对侧纤维相似的功能。有目的的活动，如吸吮和反刍没有得到其他作者所描述的这种反应可能是由于传播的刺激皮层外区域。诱发反应是相同的山羊1-12个月，从而表明，成熟的大脑皮层不发生出生后。[long破折号]Auth.总结
The cerebral cortices of anesthetized goats were stimulated with unipolar and bipolar electrodes. Only a small area of the medial orbito-frontal pole, embracing a part only of the superior and middle longitudinal gyri, can be excited to produce somatic motor responses. From the superior longitudinal gyrus contralateral clonic movement is produced readily in the forelimb but all 4 limbs may respond by facilitation. Ipsilateral contraction of the lips can be obtained only from the middle longitudinal gyrus. The localization was confirmed by stimulation of an unanesthetized goat with indwelling electrodes. Although both areas responds to single pulse stimulation. The pyramidal tract of ungulates is discussed in relation to that of primates. It is suggested that ipsilateral fibers from the middle longitudinal gyrus of goats may subserve a similar function to the contralateral fibers of the precentral gyrus of primates. Purposive activity such as sucking and rumination was not obtained; such responses described by other authors may be due to spread of stimulus to extra-cortical regions. The evoked responses were identical in goats of 1-12 months, thus indicating that maturation of the cerebral cortex does not occur after birth.[long dash]Auth. summ.