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The Biology of the Mind

by: Myrissa Webb

The Biology of the Mind PSYC 2010 - 001

Marketplace > Auburn University > PSYC 2010 - 001 > The Biology of the Mind
Myrissa Webb
GPA 4.0

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About this Document

Lecture on 8/31/16
Introduction into Psychology
Jennifer Daniels
Class Notes
Intro to Psychology
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This 1 page Class Notes was uploaded by Myrissa Webb on Wednesday August 31, 2016. The Class Notes belongs to PSYC 2010 - 001 at Auburn University taught by Jennifer Daniels in Fall 2016. Since its upload, it has received 4 views.


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Date Created: 08/31/16
The Biology of the Mind Neural communications  The body's information system is built from billions of interconnected cells  Neurobiologists and other investigators understand that humans and animals operate similarly when processing info Neuron  A nerve cell, or neuron, consists of many different parts  Dendrites- Branching extensions at the cell body. Receive messages from other cells  Axons- Passes messages away from the cell body to other neurons, muscles, and glands  Terminal Branches: Form junctions with other cells  Neural Impulse: (Action Potential) Electrical signals traveling  Cell body: The cells life-support system of the neuron. Contains the nucleus, metabolic and reproductive functions for the cells. DNA is stored here Action Potential  A neural impulse. A brief electrical charge that travels down the axon and is generated by the movement of positively charged atoms in and out of channels in the axon's membrane Threshold of Excitation  Threshold: Each neuron receives excitation and inhibitory signals from many neurons. When the excitatory signals minus the inhibitory signals exceeds a minimum intensity (threshold) the neurons from action potential Action Potential Properties  All-or-none response: A strong stimulus can trigger more neurons to fire and to fire more often, but it does not affect the action potentials strength or speed.  Intensity of an action potential remains the same throughout the length of the axon Synapse  A junction between the axon tip of the sending neurons and the dendrite or cell body of the racking neuron This tiny gap is called the synaptic gap or cleft Neurotransmitters  This (chemical) released from the sending neuron travel across the synapse and bind to receptor sites on the receiving neuron, thereby influencing it to generate an action potential Reuptake  Neurotransmitters in the synapse are reabsorbed into the sending neurons through the process of reuptake. This process applies the brakes on neurotransmitter actions How Neurotransmitters influence us  Serotonin path ways are in evolved with mood regulating  Dopamine pathway are involved with disease such as schizophrenia and Parkinson's disease


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