Effects of visual motor illusions on motor learning and its neural basis

2023 Fiscal Year Final Research Report

• Project/Area Number: 22K17569
• Research Category: Grant-in-Aid for Early-Career Scientists
• Allocation Type: Multi-year Fund
• Review Section: Basic Section 59010:Rehabilitation science-related
• Research Institution: Tokyo Metropolitan University (2023); Chiba Prefectural University of Health Sciences (2022)
• Principal Investigator: Sakai Katsuya 東京都立大学, 人間健康科学研究科, 助教 (30831565)
• Project Period (FY): 2022-04-01 – 2024-03-31
• Keywords: 視覚性運動錯覚 / 運動学習 / fNIRS

Outline of Final Research Achievements

This study investigated whether VMI changes the early stages of motor learning in healthy individuals. Thirty‐six participants were randomly assigned to two groups: the VMI or action observation condition. Each condition was performed with the left hand for 20 min. The ball‐rotation task and brain activity during the task were measured pre, post1 (immediately), and post2 (after 1 h) in both conditions, and brain activity was measured using functional near‐infrared spectroscopy. The rate of the ball‐rotation task improved significantly at post1 and post2 in the VMI condition than in the action observation condition. VMI condition lowers left dorsolateral prefrontal cortex and right premotor area activity from post1 to pre compared to
the action observation condition. In conclusion, VMI effectively aids early stages of motor learning in healthy individuals.

Free Research Field

リハビリテーション

Academic Significance and Societal Importance of the Research Achievements

視覚性運動錯覚は運動を実施せずに、自己が運動しているような視点で運動を観察することにより錯覚を誘発する方法である。運動を実施せずとも運動機能や脳活動を変化させ運動学習を促進できるため、運動を実施することが困難な脳卒中片麻痺患者や疼痛を有する患者のリハビリテーションに応用できる。