New Movement - Movement ThePhysiologicalBasisofOvert...

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Movement The Physiological Basis of Overt  Behavior
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Lecture Overview Hierarchical control of movement Organization of the motor system Basal ganglia and cerebellum
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Sequentially organized  movement Visual info to locate target Frontal lob to plan the reach  and command the movement Spinal cord carries info to hand Motor neurons carry message  to muscles to hand Sensory receptors on fingers  send mgs to sensory cortex   relaying info Sensory cortex receives info  Basal ganglia judges grasp  forces, cerebellum corrects for  errors Spinal cord carries sensory  info to brain
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Principles of Motor Function John Hughlings Jackson  (1870s) Hierarchial Organization Association areas  Higher order integrative  functions associate sensory inputs to  motor response Association Cortex Secondary Primary Brain Stem Sp. Cord Muscle
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The Forebrain Frontal lobe divisions: Motor cortex- joint mvmts Premotor cortex- motor preparation; hand- shaping or reaching; sequential mvmt Prefrontal cortex- planning mvmt  Anterior association area
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Ex: hierarchical functions of  movement Motor Cortex                   Premotor Cortex               Prefrontal Cortex
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The Brainstem Responsible for species- typical behaviors Hess (1950s) Stimulating dif areas in  brainstem produce dif  species-specific behaviors Many nerve connections  pass through (pain,  pressure, touch temp,  proprioception) Involved in cardiovascular  system control, respiratory  control, pain sensitivity  control, alertness, and  consciousness
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Brainstem Damage- Cerebral  Palsy Umbrella term for group of  non-progressive, non- contagious, motor  conditions occurring before,  during or shortly after birth Disorder of motor  function, impairment of  speech, balance, sight,  hearing and/or cognition Damage to developing  brain May also be due to  infection/trauma or  anoxia
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Brainstem Damage- Autism  A brain development disorder  characterized by impaired social  interaction and communication, and by  restricted and repetitive behavior.  begin before a child is 3 years old Disorder of cognitive function Abnormal brainstem development Studies have reported associated motor  problems that include poor muscle tone, poor  motor planning, and toe walking
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New Movement - Movement ThePhysiologicalBasisofOvert...

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