PHYSIOPSYCH1

PHYSIOPSYCH1 - “The brain is a remarkable organ It starts...

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Unformatted text preview: “The brain is a remarkable organ. It starts working as soon as you wake up and it doesn’t stop working until you get to the office.”- Rutgers Administrator Goals in this Course To understand: how a neuron generates an action potential that most drug effects on behavior involve altered neurotransmission at synapses how the major parts of the nervous system are connected (neural circuits) “Law of Specific Nerve Energies” how a few of the major systems work how neural circuits change as a function of learning Overview Of Course Topics Foundations of biopsychology Neurophysiology and neuroanatomy Methodology Sensation and movement Physiology of behavior Emotion Motivation Learning & Memory Psychological disorders Chapter 1 Introduction Localization of Function Muller (1800s) noted that each nerve carries a different kind of message to the brain (Doctrine of Specific Nerve Energies ) Muller concluded: because all nerve fibers carry the same type of message (the nerve impulse), sensory information must be specified by WHICH particular nerve fibers are active. Biological Roots of Physiological Psychology: Doctrine of specific nerve energies: • Muller concluded that because all nerve fibers carry the same type of message (the nerve impulse), different types of sensory signals must be projected to different brain areas. Phrenology (late 1800s) Biological Roots of Physiological Psychology Localization of Function Experimental ablation: • Both Fluorens and Lashley used the ablation method: – damage a part of the brain – its function is deduced by observing the behaviors an animal can no longer perform. Lashley maze Localization of Function ■ While Lashley failed, Flourens reported discrete brain areas that controlled heart rate and breathing, others purposeful movements, and still others visual and auditory reflexes Electrical Stimulation of Brain Fritsch and Hitzig (1800s) applied electrical stimuli to cortex in dogs to elicit muscle contraction on opposite body side (notion of contralateral) Identified primary motor cortex, a region of cortex that activates discrete muscles on the opposite side of...
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PHYSIOPSYCH1 - “The brain is a remarkable organ It starts...

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