Response characteristics of the descending interneurons in the honeybee ( Apis mellifera) to stimulating light and their relation to the different horizontal direction of the stimulating light were studied with electrophysiological exocellular recording method. 利用电生理细胞外记录方法研究了蜜蜂下行神经元对光的反应特征以及与水平方向上光刺激角度的关系。