PSYC 101 Lecture Notes - Lecture 3: Autonomic Nervous System, Central Nervous System, Functional Magnetic Resonance Imaging

• School: University of San Diego
• Department: Psychology
• Course: PSYC 101
• Professor: Pearlberg Steven

Document Summary

Phrenology - belief that bumps on head could reveal things about you: traits, behavior: pseudo science - no evidence. Central nervous system: receives sensory input, sends info to brain, responds with motor output. Peripheral: somatic, autonomic, sympathetic (fight or flight, parasympathetic. Somatic nervous system: conveys sensory info to cns, sends motor signals to muscles. Autonomic nervous system: sympathetic (arouses, pupils dilate, salivation decreases, heart accelerates, lungs dilate, digestion and elimination decrease, sexual climax, sweating increases. Parasympathetic: calms, pupils constrict, salivation increases, heartrate decelerates, digestion and elimination increases, no sweating, returns to state of normalcy. Sulcus - separating frontal lobe from primary motor strip. Motor - movement (info going out from brain) Cortical magnification - certain motor functions require more of brain: cortical = cortex, magnification = more area. Somato sensory cortex - transmission between parietal and sensory is very fast (phantom limb) Occipital lobe - involved in visual perception and processing.