Psych Week 2
Psych Week 2 PSYC 101 - 001
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PSYC 450 001
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This 2 page Class Notes was uploaded by Lindsey Spitzer on Sunday September 6, 2015. The Class Notes belongs to PSYC 101 - 001 at University of South Carolina taught by Michelle Maria Kitchen (P) in Fall 2015. Since its upload, it has received 66 views. For similar materials see Introduction to Psychology in Psychlogy at University of South Carolina.
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Date Created: 09/06/15
Psychology 101 Week 2 August 31 2015 Neural Communication 0 Basic Terminology Neuronal Parts 0 Neuron basic building block of the nervous system 0 Dendrite part of the neuron that receives messages from other cells and passes the messages to the cell body 0 Cell body control center of neuron contains nucleus 0 Axon sends messages to other neurons muscles or glands o Myelin Sheath fatty tissue covering some axons speeds conduction of neural impulse o Synapse junction between axon of one neuron and dendrite of another neurons do not actually touch 0 Receptor protein that binds neurotransmitters hormones or drugs 0 Action Potential brief electrical charge that travels down an axon Caused by positively charged ions moving in and out of channels on the axon s membrane 0 Threshold the level of stimulation required to trigger an action potential Threshold is reached through depolarization o Depolarization when the inside of an axon becomes more positive through an inward flow of ions 0 Hyperpolarization return of the inside of the axon to a more negative charge 0 Allornone action potentials cannot be partial they either happen or they do not happen 0 Refractory Period the period in which a new action potential cannot occur September 2nd 2015 Neurotransmitters 0 Chemical messages that traverse the synaptic gaps between neurons and bind to receptors 0 Dopamine movement learning attention emotion reward linked with schizophrenia Parkinson s o Serotonin mood hunger sleep arousal linked with depression 0 Norepinephrine alertness and arousal linked with depression 0 Endorphins natural opiatelike transmitters linked to pain control and pleasure 0 5060 types of known neurotransmitters 0 Sequence of events backboard The Nervous System and Brain 0 Central Nervous System spinal cord and Brain 0 Brain 0 Hindbrain I Cerebellum little brain coordinates voluntary movement balance I Lower Brain Stem automatic survival functions crossover point for information Leaving and entering the brain 0 Medulla controls heartbeat and breathing o Pons bridge between cerebellum and brainstem o Midbrain I Upper Brain Stem integration of sensory processes I Reticular formation arousal sleep pain perception relay center 0 September 4th 2015 o Con nued o Forebrain I Thalamus sensory relay center except small and integrator I Hypothalamus maintenance temperature regulation eating drinking sexual behavior 0 Helps govern the endocrine system via the pituitary gland o Reward center and is linked to emotion Feeding fighting fleeing fornicating I Limbic System basic motivational drives and emotion o Hippocampus memory processing 0 Amygdala fear aggression emotion o HypothalamusThalamus I Nucleus Accumbens part of dopamine reward system I Cerebrum higher order control information processing reasoning personality intelligence language 0 Frontal Lobe mirror initiation o Prefrontal cortex attention planning sense of self social life 0 Parietal lobe somatosensory touch 0 Occipital Lobe vision 0 Temporal Lobe hearing I Output motor cortex I Input Sensory cortex 0 Specialization 0 Left Hemisphere language 0 Right Hemisphere spatial reasoning and orientation facial recognition reading maps drawing geometric shapes 0 Corpus Callosum connects the two hemispheres and allows them to communicate
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