EXAM EXAMINATION TEST 2026
COMPLETE QUESTIONS AND SOLUTIONS
GRADED A+
⩥ traveling wave theory. Answer: perceived pitch depends not just on
which part of the basilar membrane is maximally active, but also on the
timing of that activity. the electrical activity trigger in sets of auditory
neurons tends to be locked in phase with sound waves. such that a
separate burst of action potential occur each time a sound wave peaks.
the frequency at which such burst occur contributes to the perception of
pitch
⩥ asymmetry in auditory masking. Answer: the manner by which the
basilar membrane responds to differing frequencies making sense of a
number of auditory phenomena
⩥ proximal portion. Answer: closest to beginning of cochlear and oval
window, higher pitched sounds
⩥ sensorineural deafness. Answer: damage to hair cells of the cochlea or
damage to the auditory neurons
- occurs to people regularly exposed to loud sounds
,cochlear implant
⩥ congential deafness. Answer: deafness from birth
either damaged hair cells or auditor neurons
⩥ neurons in the primary auditory cortex are tonotopically organized
which means..... Answer: each neuron there is maximally responsive to
sounds of a particular frequency and the neurons are systematically
arranged such that high-frequency tones activate neurons at one end of
this cortical area and low frequency tones activate neurons at the other
end
⩥ how do we hear in relation to neurons. Answer: the pitch or set of
pitches we hear depends largely on which neurons in the auditory cortex
are most active
influenced by experience, as it determines the specific amount of cortex
devoted to any particular range of frequencies and is affected by
previous auditory experiences
⩥ kraus and banai, evidence for pitch processing. Answer: musicians
brains respond more strongly to the sounds of the instruments they play
than to other instruments
,⩥ intraparietal sulcus. Answer: distinguishing pitch depends upon this
area with the primary auditory cortex, which receive input from the
primary auditory cortex.
involved in both music perception and visual space perception
study: those who described themselves as tone deaf and performed
poorly on a test to distinguish musical notes also performed poorly on
visual spatial test requiring them to mentally rotate pictured objects and
match to pictures of objects in other view points
⩥ sound localisation. Answer: suggested as something born with not
learned
we can easily distinguish between voices and attend to one voice in
noisy environments but when they are from different locations
depends on the time at which each sound wave reaches one ear
compared to the other so if in front, reaches same time
if slightly left, left ear hears a few seconds before and helps to determine
location. neurons help to perceive direction of sound
⩥ hpw we identify words and sounds from certain patterns of change in
high/low/soft/loud/amplitude/frequency that occur over the time as the
, word is spoken?. Answer: beyond the primary auditory area are cortical
areas for analysing such patterns.
some neurons in areas near primary auditory area respond only to certain
combinations of frequencies, others only to falling or rising.
⩥ phonemes. Answer: individual vowel and consonant sounds that make
up words
⩥ phonemic restoration. Answer: an illusion in which people hear
phonemes that have been deleted from words or sentences as if they
were still there. the perceptual experience is that of really hearing the
missing sound
⩥ Richard Warren phonemic restoration study. Answer: removed s sound
and spliced in a coughing sound in a tape-recorded sentence
people listened and could hear the cough but did not coincide with any
specific portion of the sentence or block out any sound
even when listened to repeatedly, instructions to determine what sound
was missing subjects were unable to detect that any sound was missing
after they were told which sound is missing, they still claimed to hear
the sound each time after