Multijoint Reflex Responses to Constant-Velocity Volitional Movements

نویسندگان

  • Samir G. Sangani
  • Andrew J. Starsky
  • John R. McGuire
  • Brian D. Schmit
چکیده

Brian D. Schmit, PhD 12 Marquette University 13 Department of Biomedical Engineering 14 P.O. Box 1881 15 Milwaukee, WI 53201-1881 16 17 Phone: (414) 288-6125 18 Fax: (414) 288-7938 19 20 Email: [email protected] 21 22 23 Running Title: Reflex Response to Active-Assist Elbow Movements Post-Stroke 24 25 26 27 28 29 30 31 Articles in PresS. J Neurophysiol (June 24, 2009). doi:10.1152/jn.90972.2008

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

Multijoint reflex responses to constant-velocity volitional movements of the stroke elbow.

Multijoint reflex coupling could impact the voluntary control of functional arm movements in people post stroke. The multijoint responses to active-assist, constant-velocity movements of the elbow joint were measured in 14 individuals post stroke and 9 neurologically intact controls. Resulting responses in the stroke group illustrated a change in the reflex coupling of the elbow and shoulder mu...

متن کامل

Extraretinal signals in MSTd neurons related to volitional smooth pursuit.

Smooth pursuit (SP)-related neurons in the dorsal-medial part of medial superior temporal cortex (MSTd) carry extraretinal signals that may play a role in maintenance of SP once eye velocity matches target velocity. For example, it has not been determined whether the extraretinal signals reflect volitional SP commands or proprioception. The aim of this study was to test some potential sources o...

متن کامل

A novel mechanism for volitional locomotion in larval zebrash

To locomote stably, animals must coordinate volitional actions that change posture with opposing reflexes that hold posture constant [1–8]. These conflicting actions are thought to necessitate integrated control, in which reflexes are modulated to permit or even produce volitional movements [9–14]. Here we report that larval zebrafish (Danio rerio) utilize a simpler control scheme featuring ind...

متن کامل

Contributions of altered stretch reflex coordination to arm impairments following stroke.

Patterns of stereotyped muscle coactivation, clinically referred to as synergies, emerge following stroke and impair arm function. Although researchers have focused on cortical contributions, there is growing evidence that altered stretch reflex pathways may also contribute to impairment. However, most previous reflex studies have focused on passive, single-joint movements without regard to the...

متن کامل

Title: Bilateral Oscillatory Hip Movements Induce Windup of Multijoint Lower Extremity Spastic 1 Reflexes in Chronic Spinal Cord Injury 2 3

25 Following spinal cord injury (SCI), alterations in intrinsic motoneuron properties have 26 been shown to be partly responsible for spastic reflex behaviors in human SCI. In particular, a 27 disregulation of voltage dependent depolarizing persistent inward currents (PICs) may permit 28 sustained muscle contraction after the removal of a brief excitatory stimulus. Windup, in which 29 the motor...

متن کامل

ذخیره در منابع من


  با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

عنوان ژورنال:

دوره   شماره 

صفحات  -

تاریخ انتشار 2009