PSY 265 Lecture Notes - Lecture 8: Parallel Computing, Sensory System, Nanometre
Document Summary
More displacement causes greater fluctuations of the basilar membrane. Greater fluctuation of the basilar membrane causes more frequent firing of the hair cells. More frequent firing of the hair cells produces more frequent firing of the bipolar cells. More frequent firing of the bipolar cells is translated as louder sound. Use a microphone and processor to detect incoming frequencies. The frequencies are then transmitted to electrodes along the basilar membrane. Activating the electrodes stimulates the basilar membrane. The basilar membrane then responds the same way as if the stimulation was internal. Primary: input mainly from thalamic relay nuclei. Striate cortex receives input from the lateral geniculate nucleus. Secondary: input mainly from primary and secondary cortex within the sensory system. Association: input from more than one sensory system, usually from secondary sensory cortex. Hierarchal organization: specificity and complexity increases with each level, sensation. Distinct functional areas within a level: parallel processing.
