PS101 Lecture Notes - Lecture 15: Oval Window, Basilar Membrane, Sound
Document Summary
Basilar membrane: convert sound wave to neural impulses, sound waves vibrate the fluid, moving the hair cells on the. Hair cells (auditory receptors) membrane: auditory nerve, thalamus, auditory cortex. Where the basilar membrane is being moved determines pitch. Shaped like a cone to collect sound waves, white girl cartilage. Vibrates as a function of the sound wave: ossicles amplify sound before it travels through fluid. How much the basilar membrane moves determines pitch. Sound waves take longer to get to the farther ear. Hearing music as patterns vs. unstructured notes. Hearing familiar music: frontal lobe processes pattern/logic, hippocampus (memory) Music & emotion (speech prosody: musical aspects to speech that helps us decode emotion limbic system. Music you want to groove to: motor cortex, cerebellum, parietal lobe. Addicted to music: good music releases dopamine. Taste: chemical substance hits papillae, go down to taste receptors in between taste buds, thalamus, brain. Taste buds are spread unevenly across tongue.
