Ladygina T F, Popov V V, Supin A Ia
Neirofiziologiia. 1985;17(3):344-51.
Somatotopic projections in the cerebral cortex of the fur seal (Callorhinus ursinus) were determined by microelectrode recordings of the multiple unit activity. Somatosensory cortical area is restricted rostrally by postcruciate and coronal sulci, caudally by anterior suprasylvain sulcus and dorsomedially by ansate sulcus. The somatotopic map in this area is oriented in such a way that the head projection is positioned ventrolaterally and that of the hindlimb dorsomedially. The projection area of the forelimb is immersed in the coronal sulcus. Marked disproportions are observed in the projections of different parts of the soma; the head projection has a relatively large magnification factor and within it the vibrissae are presented with the largest magnification.
通过对多单位活动进行微电极记录，确定了海狗（Callorhinus ursinus）大脑皮层中的躯体定位投射。躯体感觉皮层区域在前方受十字后沟和冠状沟限制，后方受前颞上沟限制，背内侧受袢状沟限制。该区域的躯体定位图的定向方式是，头部投射位于腹外侧，后肢投射位于背内侧。前肢的投射区域位于冠状沟内。在躯体不同部位的投射中观察到明显的比例失调；头部投射具有相对较大的放大系数，其中触须的放大系数最大。
