Implicit Motor Sequence Learning During Serial Reaction Time Tasks Induced by Visual Feedback in Patients With Stroke

편측 뇌손상 환자에서 시각적 정보에 의한 운동 순서의 내잠 학습에 대한 분석

  • Lee, Mi-Young (Dept. of Physical Therapy, Graduate School of Rehabilitation Science, Daegu University) ;
  • Park, Rae-Joon (Dept. of Physical Therapy, Daegu University) ;
  • Kwon, Yong-Hyun (Dept. of Rehabilitation Science, Graduate School, Daegu University) ;
  • Park, Ji-Won (Dept. of Physical Therapy, Daegu Catholic University) ;
  • Jang, Sung-Ho (Dept. of Rehabilitation Medicine, College of Medicine, Yeungnam University)
  • 이미영 (대구대학교 재활과학대학원 물리치료학과) ;
  • 박래준 (대구대학교 재활과학대학 물리치료학과) ;
  • 권용현 (대구대학교 대학원 재활과학과) ;
  • 박지원 (대구가톨릭대학교 보건과학대학 물리치료학과) ;
  • 장성호 (영남대학교 의과대학 재활의학과)
  • Received : 2006.07.10
  • Accepted : 2006.08.17
  • Published : 2006.09.17

Abstract

Theoretical framework of motor learning is used to enhance perceptual motor skill in physical therapy intervention, which can be subdivided into two main types-explicit and implicit. The purpose of this study was to examine whether stroke patients with unilateral brain damage learn implicitly a motor skill using the arm ipsilateral to the damaged hemisphere. Speculation then followed as to the formation of therapeutic plans and instructions provided to patients with stroke. 20 patients with stroke and 20 normal participants were recruited. All the subjects practiced serial reaction time tasks for 30 minutes a day and retention tests on the following day. The tasks and tests involved pressing the corresponding buttons to 4 colored circles presented on a computer screen as quickly and accurately as possible. Patients with stroke responded more slowly than controls. However, both groups showed decreased reaction time in the experimental and retention periods. Also, there was no significant difference between both groups regarding explicit knowledge of consecutive order. Therefore, patients with stoke had the ability to learn implicitly a perceptual motor skill. Prescriptive instruction using implicit and explicit feedback may be beneficial for motor skill learning in physical therapy intervention for patients with brain damage.

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