PSYC 304 Chapter Notes - Chapter 7: List Of Thalamic Nuclei, Multisensory Integration, Olfactory System
Document Summary
Each sensory system has cells that transduce energy from outside world into neural response (receptors) Within each modality there are receptors that are sensitive to specific inputs and not others. Auditory system: inner and outer hair cells in the cochlea, sensing the shearing of the tectorial membrane. Sounds-->tympanic membrane-->ossicles-->banging on the oval window of the cochlea-->shearing of the basilar and tectorial membrane. Vibration of the tectorial membrane cause fluid motions in the canals, stimulating the inner hair cells. Outer hair cells act as a feedback mechanism to prevent the over-shearing of the tectorial membrane. Diff frequencies maximally displace the basilar membrane at certain places-->ativate hair cells at diff places-->sensing of pitch. Thermoreceptors (temperature)--cold and warm fibres (increase firing rates with their respective temeperature changes) Proprioceptors/kinesthetic receptors (sense of self/movement in relation to self) After tissue damage, there is acute pain followed by central sensitization of pain.
