刺激の呈示速度と課題の性質が系列的非言語刺激の処理に関する大脳半球機能差に及ぼす影響

The effect of stimulus rate and task requirements on hemispheric differences in the processing of serial nonverbal stimuli

Miyatani Makoto

広島大学教育学部紀要. 第一部, 心理学

Bulletin of the Faculty of Education, Hiroshima University. Part 1, Psychology division

In this experiment, functional differences of left (LH) and right hemisphere (RH) in temporal coding for serial nonverbal stimuli were examined in three different memory tasks. The pairs of nonsense shapes were presented, one in left (LVF) and another in right visual field (RVF), successively at three different presentation rate. After the list, to-be-judged items were presented, and subjects were required to judge on (a) whether or not these items were presented in the list (recognition task), (b) serial position in the list (order judgments), or (c) relative recency of two items (recency judgments). In recognition task, in which the processing and retention of order information of each item was not necessary, the reaction time to items presented in RVF were longer than those to items in LVF. In contrast, both the number of correct response and the reaction time showed RVF/LH superiority in the order judgment task that required precise order information. These results suggest that LH and RH were different in temporal coding for serial nonverbal stimuli, and that its difference implicated how differently LH and RH responded to temporal aspects of information.

hemispheric differences

temporal coding

recognition

order judgments

recency judgments

nonsense shapes

Psychology [ 140 ]

jpn

広島大学教育学部

[ISSN] 0919-8652

[NCID] AN1044240X