ORIENTATIONAL AND DIRECTIONAL CHARACTERISTICS OF NEURONAL RESPONSES TO MOVING BARS IN THE PMLS AREA OF THE CAT
猫后内侧上雪氏区视神经元对运动棒反应的取向和方向特征

Most posteromedial lateral suprasylvian (PMLS) cells (171/200) tuned to the orientation of moving bars. 65% of their tuning widths (width at half height)were less than90°.Taking into consideration of both orientational and directional selectivities, four distinct cell groups could be recognized. 1. cells with strong direction as well as orientation selectivities; 2. cells with strong orientation tuning and bidirection selectivity;3 cells with weak orientation tuning and strong direction selectivity;4.cells neither orientationally nor directionally tuned; 5. cells without the above distinct characteristics.There types of cells agree well with the organization of the middle temporal visual area (MT) of the owl monley, revealed by using optical recording techniques.