箸使用時の利き手と非利き手のパフォーマンスに対する視覚の関与

概要

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The effect of vision cutoff on the transfer time of a sample by using chopsticks in the dominant and non-dominant hands was studied in women. A comparison between the vision-free and vision-cutoff conditions in the times for total, net, and regulatory transfer of a sample by the dominant hand was also examined. Under the vision-free condition, the total transfer time for a sample was 3.4 times longer by the non-dominant hand than by the dominant hand. Under the vision-cutoff condition, the total transfer time for a sample was significantly longer by the non-dominant hand than by the dominant hand. The difference in total transfer time of a sample between the nondominant hand and dominant hand under the vision-cutoff condition was 13.4 times longer than that under the vision-free condition. However, there was no significant difference in the net transfer time of a sample between the dominant hand and non-dominant hand under the vision-free and vision-cutoff conditions. These results suggest that the transfer motion of a sample by the non-dominant hand was less regulated than that by the dominant hand, and that this transfer motion of the sample by the non-dominant hand was substantially slowed by vision cutoff.
2005-06-20