Biology of the mind; Week 3 notes
Biology of the mind; Week 3 notes Psyc 2010
Popular in Intro to Psychology
Popular in College of Liberal Arts and Sciences
This 8 page Class Notes was uploaded by Courtney Notetaker on Wednesday September 14, 2016. The Class Notes belongs to Psyc 2010 at Auburn University taught by Jennifer Daniels in Fall 2016. Since its upload, it has received 6 views. For similar materials see Intro to Psychology in College of Liberal Arts and Sciences at Auburn University.
Reviews for Biology of the mind; Week 3 notes
Report this Material
What is Karma?
Karma is the currency of StudySoup.
You can buy or earn more Karma at anytime and redeem it for class notes, study guides, flashcards, and more!
Date Created: 09/14/16
Biology of the Mind “The brain is wider than the sky” Emily Dickinson Neural Communication; The body’s information system is built from billions of interconnected cells called neurons Neurobiologists and other investigators understand that humans and animals operate similarly when processing information Neuron; A nerve cell, or a neuron, consists of many different parts Cell body; Life support center of the neuron. Contains the nucleus metabolic and reproductive functions for the cell. DNA stored here. Dendrites; receive messages from other neurons Terminal Branches of Axon; Releases neurotransmitters Axon; Long single extension of a neuron, covered with the m yelin sheath to insulate and speed up messages through neurons *Process between neurons is a chemical process A neural impulse; A brief electrical charge that travels down an axon and is generated by the movement of positively charged atoms in and out of channels in the axon’s membrane Threshold; Each neuron receives excitatory and inhibitory signals from many neurons. When the excitatory signal minus the inhibitory signals exceed a minimum intensity (threshold) the neuron fires an action potential All or None Response; Once it reaches the threshold, the action potential will fire. A strong stimulus can trigger more neurons to fire, and to fire more often, but it does not affect the action potential strength of speed Intensity of an action potential r emains the same throughout the length of an axon Synapse; A junction between the axon tip of the sending neuron and the dendrite or cell body of the receiving neuron. This tiny gap is called the synaptic gap or c left Neurotransmitters; (chemical) Released from the sending neuron travel across the synapse and bind to the 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 action How Neurotransmitters Influence Us? Serotonin pathways are involved with mood regulation Dopamine pathways are involved with diseases such as schizophrenia Gila Cells Cells that provide support and nutritional benefits in the nervous system Keeps neurons in their proper places Destroy and eliminate dead neurons and then often replace those neurons Help make sure neurons signals are not mixing Kinds of Neurons Sensory Neuron carry incoming information from the sense receptors to the CNS. Motor Neurons carry outgoing information from the CNS to muscles and glands. Interneurons connect the two neurons Nervous System; (Central and Peripheral nervous systems) Consists of all the nerve cells. It is the body’s speedy, electrochemical communication system. Central Nervous System; Brain and the Spinal cord> network formed in the brain Peripheral Nervous System; Sensory and and motor neurons that connect the CNS to the rest of the body>> Somatic and Autonomic systems Somatic Nervous Systems; The division of PNS that controls the body’s skeletal muscles (voluntary muscle movement) Autonomic Nervous System; Part of the PNS that controls the glands and other muscles Sympathetic Nervous System; the body, mobilizing its energy in stressful situations (fight or flight) Fight or Flight is instinct to flee a situation or to fight in a stressful situation. It’s a natural instinct that mostly isn’t voluntary Parasympathetic Nervous System; calms the body, conserving its energy (rest and digest) The Nerves; Nerves consist of neural cables containing many axons. They are party of the peripheral nervous system and connect muscles, glands and sense organs to the central nervous system. Computerized Axial Tomography (CAT/CT) Locates abnormalities in structure or shape of brain XRay providing cross section of the body
Are you sure you want to buy this material for
You're already Subscribed!
Looks like you've already subscribed to StudySoup, you won't need to purchase another subscription to get this material. To access this material simply click 'View Full Document'