behavior

Essay text:

placebo effect- expectations affecting what happens to us/central nervous system-brain and spinal cord/peripheral system-nerve cells/neuron-nerve cells that communicate w/ eachother/synapse-junction between axon terminals of one neuron&the dendrites of another neuron/neurotransmitters- chemical messenger that carries impulses across the synaptic gaps between neurons/autonomic system-heartbeat breathing/thalmus-controls sensory stimulation/hypothalamus-regulates body temps,storage of nutrients&various aspects of motivation/amygdala-moral?nical decisions(super ego)/ ID-hypothalamus ego-thalamus s ego-amygdala/EEG-electroencephalogram,shows brain waves/MRI-magnetic resonance imaging,place person in strong magnetic field,shows brain energy/CAT-computerized axial tomography,x-rays passed through head,shows density of different areas/endocrine system-glands that secrete hormones into the blood stream/hormone by pituitary gland-oxytocin/hormone by thyroid gland-thyroxin/hormone by adrenal gland-adrenaline/sensation-stimulation of sensoryreceptors/perception-we interpret sensory stimulation/absolute threshold-weakest threshold-smallest/signal detection-become more sensitive to weak stimuli/pupil-lets light into your eye,lens-adjusts to the distance by changing its thickness,retina-images are protected onto it,has neurons/parts of the ear-cochlea-contains fluid&neurons that move in response to vibrations,auditory-nerve connects to the brain,hammer,anvil,stirrup-bones in the middle ear/olfactory nerve-smell receptors that send signals to the brain/taste-bitter sour sweet salty/sensors-pain pressure temp/depth perception-binocular disperity...