光刺激の半球間情報伝達時間の推定

Abstract

The purpose of this study is to investigated the Interhemispheric Transmission Time (ITT) by the reaction time. Experimental condition are as follows. Stimulus present locus : 10°, 30°, 50° of the left and the right visual field Light stimulus : 1°, 16nit, yellow LED (Light Emitting Diode), 100msec flash Subject : 20 males of 18～22 age of right handedness. Reaction of subject : press of telegraph key by the thumbs of the right and left hands. The RT of the left hand was more fast that of the right hand siginificantly in each position of the left visual field. But in the right visual field, the RT of the right hand was not more fast than the RT of the left hand significantly. ITT of the left hemisphere → right hemisphere and the right hemisphere → left hemispere were assumed as the same time. ITT was caluculated by dividing the RT into six factors. As the result ITT were 50° : 1.5msec, 30° : 2.0msec, 10° : 3.2msec. That the RT of the right hand was not more fast than of the left hand significantly in the right visual field was conjectured by the non-dominant hands superiority in key press movement in the right hand.