Relationship between the delay of response and nervous system

2014 Fiscal Year Final Research Report

• Project/Area Number: 24700699
• Research Category: Grant-in-Aid for Young Scientists (B)
• Allocation Type: Multi-year Fund
• Research Field: Sports science
• Research Institution: National Institute of Fitness and Sports in Kanoya
• Principal Investigator: YOTANI Kengo 鹿屋体育大学, スポーツ生命科学系, 講師 (10581142)
• Research Collaborator: NAKAMOTO Hiroki 鹿屋体育大学, スポーツ人文応用社会科学系, 准教授 (10423732) ; YUKI Atsumu 高知大学, 教育学部, 助教 (00623224)
• Project Period (FY): 2012-04-01 – 2015-03-31
• Keywords: 筋電図 / 反応時間 / 経頭蓋磁気刺激

Outline of Final Research Achievements

Pre-motor time (PMT) during motor reaction tasks reflects the time needed for processing a sensory stimulus and primarily consists of the time for intracranial processing (visuo-motor related time: VMRT) and neural conduction (motor evoked potential: MEP latency) between the motor cortex and corresponding muscle. The present experiment was to examine the PMT delay using noninvasive technique, such as electromyogram or transcranial magnetic stimulator (TMS). The main findings were: 1) the PMT delay comparatively influences VMRT, but not MEP latency, 2) relative concentration of deoxygenation haemoglobin shows a tendency to increase when VMRT delayed, 3) disturbance input during reaction task by TMS delays the PMT depending on changes in cortical excitability and length of individual VMRT.

Free Research Field

健康・スポーツ科学