The Brain Two Lecture 9-21-10

The Brain Two Lecture 9-21-10 - The Brain Part Two The...

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Unformatted text preview: The Brain Part Two The Brain: The Hindbrain, Midbrain and Forebrain The HINDBRAIN Medulla, Pons and Cerebellum • Medulla: regulates automatic functioning, circulation, breathing, muscle tone, reflexes (sneezing/salivating). • These are the parts responsible for critical life functioning • You cannot survive if it is destroyed • Pons: regulates sleeping, waking, and dreaming • Cerebellum: balance and coordination of movement; analyzes sensory information (part of being balanced has to do with feeling around); may play a role in remembering simple skills, problem solving – 10 percent of the brain – When you’ve been drinking, you don’t analyze sensory information, coordination of movement is off: ALCOHOL AFFECTS CEREBELLUM The MIDBRAIN Talks about reticular formation, tectum • Reticular Formation: modulates muscle reflexes, pain perception; active in states of arousal. Damage to this area may result in comas • Tectum: involved in auditory and visual responses • Tegmentum: controls some motor function, it seems to be responsible for regulating awareness and attention and some automatic functions (breathing, ciculation, etc.) • Tectum: vision and hearing • Tegmentum: helps function of movement and arousal The FOREBRAIN • Thalamus: relays motor impulses out of the brain; directs incoming sensory messages to higher centers • Hypothalamus: hunger, thirst, emotion, sex and reproduction, core body temperature and the autonomic nervous system (the 4 F’s) • Fighting, fleeing, feeding, and mating (fucking) •...
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This note was uploaded on 02/02/2011 for the course PSYCH psych 111 taught by Professor Shellyschreier during the Fall '10 term at University of Michigan.

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The Brain Two Lecture 9-21-10 - The Brain Part Two The...

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