Terms for First Exam - Terms for first Exam Independent...

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Terms for first Exam Independent variables: a variable you believe might influence you outcome measure, controlled by the experimenter. Dependent variable: The variable that you believe might be influenced or modified by some treatment or exposure.; the observed phenomena Somatic intervention: manipulate the body and see how behavior changes. i.e administer a hormone and look at the change in the strength of mating behavior Behavioral intervention: intervene in behavior and look for resulting changes in brain and body structure Correlation: finding extent to which a given body measure varies with a given behavioral measure; shows if two or more variables are linked (directly or indirectly) Neural plasticity : the ability of the brain to be changed by the environment and by experience Sympathetic nervous system: is dealing with energy mobilization (fight/flight response) Parasympathetic nervous system: energy conservation (rest and digest) Basic Functions of Major Parts of the Brain o Cerebral Cortex: higher function, cognition Basal Ganglia: motor control Limbic System: emotion, learning, smell Thalamus: relay center Hypothalamus: homeostasis, endocrine functions Midbrain: sensory, motor, sleep, arousal Cerebellum: motor coordination, motor control
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Medulla: breathing, heart rate Diffusion Tensor Imaging DTI: Involves quantifying the orientation and directional uniformity of water diffusion in the brain Dendrites: - provide either inhibitory or excitatory input to the neuron - surface of dendrites is specialized to receive axon terminals (dendritic Spines) Phrenology: the study of the bumps on the head. Gall coined this. Hyperpolarization: is an increase in membrane potential, caused by inhibitory messages, which puts it farther away from zero. Depolarization : is a decrease in membrane potential caused by excitatory messages, bringing it closer to zero. Conduction velocity : the speed of action potentials –varies with diameter. Nodes of Ranvier : small gaps in the insulating myelin sheath. Saltatory conduction : the axon potential travels inside the axon and jumps from node to node. Refractory period : time before another AP can fire; neuron is unresponsive; caused by the closure and inactivation of the Na+ channels. Saltatory conduction : impulses jump from node to node Spatial summation : the summing of potentials that comes from different parts of the cell. Agonist : initiates the normal effects of the receptor, activates it. Antagonist: does not activate receptor, blocks it from being activated. Cross tolerance : condition in which the development of tolerance to one drug can lead to tolerance of another drug.
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Antipsychotic: relive symptoms of schizophrenia (chlorpromazine, aldol, clozapine); aka neuroleptics ; DA Antidepressants: relive mood disorders (Marplan, Prozac, Zoloft); NE, 5-HT Anxiolytics: help with anxiety (valium); GABA Alcohol: GABA Opiates : relive pain (morphine, heroin); opiate receptors (3 types) Marijuana : pain relief, nausea relief, increase appetite; cannabinoid receptors
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This note was uploaded on 04/15/2008 for the course NSC 3361 taught by Professor Greenwald during the Spring '08 term at University of Texas at Dallas, Richardson.

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Terms for First Exam - Terms for first Exam Independent...

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