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Two effective behavioral tasks for evaluating sensorimotor dysfunction following traumatic brain injury in mice.

Yelena K Baskin1, W Dalton Dietrich, Edward J Green

  • 1Department of Psychology, University of Miami, Miami, FL 33124, USA.

Journal of Neuroscience Methods
|September 3, 2003
PubMed
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Two sensorimotor tasks, the gridwalk and spontaneous forelimb use (SFL) tests, effectively detect behavioral dysfunction after traumatic brain injury (TBI) in mice, showing lasting deficits.

Area of Science:

  • Neuroscience
  • Behavioral Neuroscience
  • Traumatic Brain Injury Research

Background:

  • Sensorimotor tasks are crucial for assessing neurological function.
  • Previous studies primarily used gridwalk and spontaneous forelimb use (SFL) tasks in rats for spinal cord or forebrain injuries.
  • Evaluating these tasks in mouse models of traumatic brain injury (TBI) is needed.

Purpose of the Study:

  • To evaluate the efficacy of gridwalk and SFL tasks in detecting sensorimotor deficits in mice following unilateral TBI.
  • To determine the duration and location-dependency of behavioral deficits.

Main Methods:

  • Male C57BL/6 mice underwent unilateral controlled cortical impact (CCI) or sham procedures at anterior, middle, or posterior locations.
  • Sensorimotor function was assessed using gridwalk and SFL tasks post-injury.

Related Experiment Videos

Main Results:

  • Gridwalk task revealed significant forelimb and hindlimb deficits contralateral to the injury for up to 1 month and 3 weeks, respectively, varying by injury location.
  • SFL task showed significant forelimb use asymmetry for at least 5 months post-TBI.
  • Both tasks demonstrated effectiveness in identifying sensorimotor impairments.

Conclusions:

  • Gridwalk and SFL tasks are effective tools for evaluating sensorimotor deficits in mouse models of unilateral TBI.
  • These tasks provide valuable insights into the long-term behavioral consequences of forebrain damage.