Studied by 3 people
inner ear : basilar membrane
gets stimulated also corresponds with frequency
base of the membrane 3-4x narrower than apex and therefore about 100x stiffer
narrow thick base
turned for high frequency
wide thin apex
tuned for low frequency
volley principle
summed activity of groups of cells can provide more accurate representation of frequency
cochlear nucleus
crossover of auditory signals to contralateral hemisphere
medial geniculate nucleus
structure within thalamus responsible for routing of auditory information
primary auditory cortex
organized similar to the cochlea (tonotopic map)
sound localization:
process of identifying where sounds come from achieved by: interaural time differences sound shadow
folds of the pinna
affect the intensities of frequencies differently depending on their elevation
multimodal integration
combining sensations from different modalities into single integrated perception
dependent on spatial and temporal association mcgurk effect
mcgurk effect
auditory - visual illusion that illustrates how perceivers merge info for speech sounds across the sense
Somatosensory system
neural structures in the brain and body that produce the perception of touch also temp, body position and pain
mechanoreceptors
detects pressure and touch
nociceptors
detects heat and pain
seismic waves
caused by sudden movements of materials within the earth
touch sensitivity: acuity
ability to discern points of pressure
two-point threshold test
sensitivity corresponds with areas of greater neural representation in somatosensory cortex
haptics
exploratory sense of touch
active touch
the control of the position and movement of tactile sensing systems to facilitate information gain
passive touch
a form of touch characterized by sensory experiences that occur when the observer does that move
tactile agnosia
inability to recognize objects through active touch of the hands without sensory input
sensory integration
visual information influences perception of touch (rubber hand illusion)
Note
Flashcard