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states that the auditory nerve can have volleys of impulses up to 400 per second even though no individual axon approaches that frequency by itself this principle provides justification for the place theory |
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respond to auditory objects and are most likely responsible for interpreting the meaning of sounds
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refers to the system that detect the position and the movement of the head |
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is the destination of information from the auditory system and is located in the superior temporal cortex which contains area MT that allows for the detection of the location of sound
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does not necessarily cause deafness unless damage extends to the subcortical areas |
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Information from below the head enters the spinal cord and travel through the 31 spinal nerves to the brain |
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the hypothalamus, amygdale and cingulated cortex which results in an emotional component to pain |
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Mild pain triggers the release of glutamate while |
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Damaged or inflamed tissue |
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releases histamine nerve growth factor and other chemicals that increase the number of sodium gates in nearby pain receptors which magnifies pain responses |
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refers the idea that the brain is constantly changing throughout the lifetime |
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refers to the production of new cells neurons in the brain primarily occurring early in life |
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refers to the forming of the axon and dendrite that gives the neuron its distinctive shape |
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Our perception of flavor is the combination of both taste and smell these axons converge in the endopiriform cortex
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the nucleus of the tractus solitaries (NTS) |
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Taste nerves project to a structure in the medulla known as |
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sends axons to the cerebral cortex where messages are coded by location |
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transducer (convert) energy into electrochemical patterns
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The brain does not duplicate what we see ;
is determined by which neurons are active |
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is lined with visual receptors TRUE |
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consist of the axons of ganglion cells that band together and exit through the back of the eye and travel to the brain |
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central portion of the macula |
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is the fovea and allows for acute and detailed vision. |
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are most abundant in the periphery of the eye and respond to faint light; |
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distinguished various types of cells in the visual cortex including simple cells, complex cells, end-stopped/ hypercomplex cells |
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cells are aligned together in columns cells within a given column process similar information responding either to the right left or both eyes equally |
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Sensitive critical periods |
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are periods of time during the lifespan when experiences have a particularly strong and long lasting effect |
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when gaba becomes widely available in the brain and |
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is defined by the basilar membrane vibrating in synchrony with sound and causing auditory nerve axons to produce action potentials at the same frequency. |
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describes that each area along the basilar membrane is tuned to a specific frequency of sound wave |
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are chemicals contained by both rods and cones that release energy when struck by light. |
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of the retina make synaptic contact with bipolar cells and horizontal cells. |
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of primates generally fall into three categories including parvocellular neurons, magnocellular neurons, and koniocellular neurons. ****TRUE |
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refers to process by which glia produce the fatty sheath that covers the axons of some neurons |
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in the brain during early development can cause significant impairment and development problems ***TRUE |
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axon in the peripheral nervous system |
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if crushed it follows its myelin sheath back to the target and grows back toward the periphery at a rate of about 1 mm per day |
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is the final stage of neural development and refers to the formation of the synapses between neurons and occurs throughout the life as neurons are constantly forming new connections and discarding old ones |
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in the fetus brain suppresses glutamate and enhances the release of GABA |
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are limbs that have lost their afferent sensory input |
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reach their target area by following a gradient of chemicals in which they are attracted by some chemicals and repelled |
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thickness of the cerebral cortex |
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declines in old age but much less in those that are physically active |
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is a chemical that promotes the survival and activity of neurons axons that are not exposed to neurotrophin after making connections undergo apoptosis |
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refers to the decreasing activity of surviving neurons after damage to other neurons |
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are new branches formed by other non damaged axon that attach to vacant receptors |
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a class of glycolipids formed by the combination of carbohydrate and fat molecules also promote the restoration of damaged brains |
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triggers the release of glutamate and substance |
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with the onset of chemicals that inhibit axonal sprouting. |
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are most abundant in the fovea and respond to color and bright light. |
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