The relations between development of humans’ manipulative skills and physiological signals of brain and hand

• 영문명: The relations between development of humans’ manipulative skills and physiological signals of brain and hand
• 발행기관: 한국과학기술원 인간친화 복지 로봇 시스템 연구센터
• 저자명: Harumi Kobayashi Tetsuya Yasuda Satoshi Suzuki
• 간행물 정보: 『International Journal of Assistive Robotics and Mechatronics』International Journal of Assistive Robotics and Mechatronics Vol.7 No.1, 49~61쪽, 전체 13쪽
• 주제분류: 공학 > 제어계측공학
• 파일형태: PDF
• 발행일자: 2006.03.01

영문 초록

  Two studies report the physiological signals of brain and hand that change as a human develops one"s manipulative skills. In Study 1, we investigated the activation of the brain in Brodmann"s area 46 of the frontal lobe in drawing tasks to examine whether Near-Infrared Spectroscopy (NIRS) can measure the changes of the DLPFC (dorsolateral prefrontal cortex) activation as a human develops motor skills. Participants performed a mirror drawing task and a square drawing task using their non-dominant hand. The change in oxy-Hb concentration decreased as the participant repeated the drawing task in most participants, suggesting that the activation of DLPFC decreases when a human develops manipulative skills. In Study 2, we investigated the phenomenon of micro？slips or non-smooth hand movements in relation to humans" skill development in coffee making. Seven right-handed participants were asked to make coffee ten times consecutively by their left hand. Each micro-slip was coded about its severity with a 5-point-scale and total frequency and a micro-slip score were calculated that we defined as the sum of micro-slip level multiplied by frequency for observed micro-slips in each cup of coffee. Results showed that frequency and micro-slip score decreased when the participants developed the coffee- making skills. We also tried to detect micro-slips by a physical measurement method of analyzing hand"s acceleration data. We showed that time-frequency characteristics of hand"s acceleration show characteristic patterns when micro-slips occur. Based on these results, we presented that physiological signals show characteristic changes as humans develop manipulative skills and suggest that such data could be a useful source of information for construction of human adaptive mechatronics (HAM).

목차

Abstract
1. BACKGROUND
2. STUDY 1
3. STUDY 2
4. CONCLUSION
REFERENCES