PSYB65H3 Chapter Notes - Chapter 11: Premotor Cortex, Basal Ganglia, Spinal Cord
Document Summary
Cerebrum (forebrain) our conscious control of movement. ** if brain stem or spinal cord does not function then forebrain can image movement but cannot produce it. Subcortical basal ganglia produce appropriate amount of force for grasping. Cerebellum regulate the time and accuracy of movement. Afferent somatosensory information travels from the body inwards via somatic nervous system. Efferent information travels from the central nervous system via parallel efferent motor system. Tract: bundle of nerve fibres inside the cns. Spinal cord lies within series of small bones vertebrae. Each spinal segment corresponds to a region of body surface called dermatome. Cervical thoracic lumbar sacral coccygeal. Movements are performed as motor sequence: movement modules preprogramed by the brain and produced as a unit. Frontal lobe of each hemisphere is responsible for planning and initiating motor sequences. Frontal lobe is divided into a number of different regions: prefrontal cortex. If injury then individual"s often break rules and norms: premotor cortex.
