نوع مقاله: مقاله کامل پژوهشی

نویسندگان

1 مربی، گروه بیوالکتریک، دانشکده مهندسی پزشکی، واحد علوم و تحقیقات، دانشگاه آزاد اسلامی

2 استاد، گروه بیوالکتریک، دانشکده مهندسی پزشکی، دانشگاه صنعتی امیرکبیر

3 استادیار، گروه بیوالکتریک، دانشکده مهندسی پزشکی، دانشگاه صنعتی امیرکبیر

4 دانشیار، گروه بیوالکتریک، دانشکده مهندسی پزشکی، دانشگاه صنعتی امیرکبیر

10.22041/ijbme.2010.13375

چکیده

در حرکات ترسیمی، خواص هندسی مسیر و ویژگی های حرکتی تحت قیودی خاص قرار دارند که با دو قانون توان دو- سوم و اصل شیب یکسان شناخته می شوند. در این مقاله با طراحی آزمون هایی درباره افراد 16-18 سال، به بررسی نوع ارتباط این دو قانون تجربی در حرکات مستقیم و منحنی شکل پرداخته می شود. با ارائه دو مدل توانی نشان داده می شود در الگوهای ترسیمی ویژگی های تغییرناپذیر قابل تعریف بوده که مستقل از فرد، جهت، چرخش و طول الگو است و در تعامل با یکدیگر علاوه بر ساده سازی نقش سیستم فوقانی کنترل حرکت، باعث کاهش تعداد درجات آزادی و پیچیدگی محاسبات می شوند.

کلیدواژه‌ها

موضوعات

عنوان مقاله [English]

Power Law: Relation Between Geometry And Kinematics In Skilled Drawing Movements

نویسندگان [English]

  • Saeed Rashidi 1
  • Seyed Mohammad Reza Hashemi Golpayegani 2
  • Ali Fallah 3
  • Farzad Towhidkhah 4

1 Instructor, Bioelectric Group, School of Biomedical Engineering, Science and Research Branch, Islamic Azad University

2 Professor, Bioelectric Group, School of Biomedical Engineering, Amirkabir University of Technology

3 Assistant Professor, Bioelectric Group, School of Biomedical Engineering, Amirkabir University of Technology

4 Associate Professor, Bioelectric Group, School of Biomedical Engineering, Amirkabir University of Technology

چکیده [English]

In drawing movements, the constraints imposed on the trajectory geometry properties and kinematics are known with two laws: 2/3 power law and isochrony phenomenon. In this paper experiments have been designed to study the relation between two empirical laws in straight and curved patterns of drawing movements in 16-18 years old subjects. Providing two models of power is indicated that in drawing movements, invariant features can be defining. These features are independent of subject, direction and size of trajectory and together they can simplify the role of the upper motor control system and decrease the degrees of freedom and the computational complexity.

کلیدواژه‌ها [English]

  • Arm Movement
  • Curvature
  • Isochrony
  • Handwriting
  • Motor control
  • Two-Thirds Power Law

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