PSY 356 Lecture Notes - Lecture 1: Ganglion, Deep Brain Stimulation, Basal Ganglia
25 Apr 2018
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Range of hearing: humans = 20-20,000 hz, animals = can hear high or low frequencies, with age, we lose the ability to hear high frequencies, as for amplitude: 60 db is average (speaking voice) Frequency analysis: we can analyze complex waveforms, we can put those waveforms into sets of. This is called fourier analysis: making sets of different frequencies and putting them into sine waves. **outer and middle ears are not necessary for hearing only inner ear. Cochlea: cochlea is part of the labyrinths part of the inner ear, it is made up of two fluid-filled tubes that run the length of the cochlea, 2 tubes, scala vestibule, scala tympani. Another part of the epithalamus is the habenular nuclei. Habenular nuclei: this part receives input from the limbic system, recent research suggests that this part has a role in selection of behavior, it project to the da (dopamine) reward system and 5ht (serotonin) system.
