Lecture 3

Lecture 3 - "#$" B IOLOGICAL P SYCHOLOGY PSC 001...

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Unformatted text preview: !"#$#!" ! B IOLOGICAL P SYCHOLOGY PSC 001 Section 003 Fall 2010 Outline ! This time: ! The Nervous System ! Older Brain Structures ! The Cerebral Cortex ! Current Techniques for Studying the Brain ! Next time: ! Neurons and Neurotransmitters ! Nature and Nurture Psychology and the Brain ! Brain provides connection between behavior and the mind BRAIN BEHAVIOR MIND !"#$#!" & Today: The Era of the Brain ! An explosion of brain science ! But do we know as much as we think? " The problem of causation " What is outside matters too! The Nervous System Divisions of the Nervous System ! Central Nervous System ! Brain ! Spinal Cord ! Encased in bone ! Organization/decision making ! Peripheral Nervous System ! All other nerve cells in body ! Sensory nerves to brain ! Motor nerves from brain ! Input/Output !"#$#!" $ Divisions of the Nervous System Peripheral Nervous System ! Somatic ! Voluntary (conscious) ! Touch messages to brain ! Motor messages to skeletal muscles ! Autonomic ! Automatic (normally unconscious) ! Messages to/from internal organs and glands Divisions of the Nervous System !"#$#!" ' Somatic nervous system ! Transmits sensory signals to the spinal cord + brain (CNS) via nerves ! Sensory (afferent) nerve fibers ! Transmits signals from CNS to muscles, joints and skin ! Motor (efferent) nerve fibers ! Controls voluntary movement Divisions of the Nervous System Autonomic nervous system ! Controls involuntary actions of internal organs, glands and smooth muscles ! Messages run between CNS and ANS ! Participates in the experiences of emotion ! Responsible for the involuntary functions we don’t normally think about " e.g. heart rate, digestion and perspiration !"#$#!" ( Autonomic nervous system Sympathetic Nervous System Parasympathetic Nervous System Autonomic Nervous System S y m p a th e tic “F ig h t o r F lig h t” Pa ra sym p a thetic “Rest a nd D ig est” Autonomic nervous system !"#$#!" ) Divisions of the Nervous System Central Nervous System ! Spinal Cord ! Transmits signals from the brain to the rest of the body ! Reflexes ! Brain ! Weighs about 3 lbs ! Contains 100,000,000,000 neurons ! Command center ! “Home of the mind” !"#$#!"!...
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Lecture 3 - "#$" B IOLOGICAL P SYCHOLOGY PSC 001...

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