PS 371- Brain Structure

PS 371- Brain Structure - Brain Structure I...

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Brain Structure I. Hindbrain (a) medulla oblongata - breathing, heart rate (HR), blood pressure (BP), digestion (b) pons (above medulla) - connects 2 halves of cerebellum, regulates states of arousal (pon’s raphe nucleus - contains serotonin which triggers and maintains slow wave sleep) (2)cerebellum - balance, smooth coordinated movements II. Midbrain -all information between the brain and spinal cord passes through the midbrain (1)substantia nigra - part of the extra pyramidal motor system (EMS) - movement (smoothness,initiation, termination, directedness) is modulated by EMS *Parkinson’s disease - degeneration of substantia nigra result in low levels of dopamine in the basal ganglia - disease is characterized by tremors and disorders of voluntary movement (2)reticular formation - connects spinal cord, hindbrain, midbrain to thalamas & forebrain - involved in sleep, arousal, reflexes -reticular activating system (RAS) - extends to the
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This note was uploaded on 02/29/2012 for the course PS 371 taught by Professor Brody during the Spring '08 term at BU.

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PS 371- Brain Structure - Brain Structure I...

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