PSYC 101 Lecture Notes - Lecture 30: Tympanic Cavity, Eardrum, Optical Illusion
55
PSYC 101 Full Course Notes
Verified Note
55 documents
Document Summary
Psyc 101 week 12 lecture 2: sensation and perception. Shape we recognize the shape of something even if it projects a different shape at different angles (open door, closed) Size we realise that the size of something is constant even though our retina projects different sizes. Colour even though we see a different image/colour, we realise that it is a constant. Optical illusions our brains occasionally make incorrect assumptions about the world. The stimulus sound waves: amplitude loudness, wavelength pitch, purity timbre. Outer ear (pinna: pinna collects and amplifies sound, auditory canal, tympanic membrane. Middle ear: eardrum sound waves hit ear drum, tympanic cavity, ossicles. Inner ear: oval window, cochlea, vestibular and cochlear nerves. Place theory specific frequencies vibrate particular places of the basilar membrane: hermann von helmholtz. Frequency theory pitch corresponds to the vibration of the whole basilar membrane: brain detects how fast the basilar membrane is firing and the auditory nerve fires at the same rate, volley principle.
