CHAPTER 5 Flashcards
(40 cards)
Sensation
stimulate senses
Transduction
converting
outside world into
neural impulses
Perception
process
interpreting, organizing
and experiencing
sensation
Frequency
number of waves that pass a given
point in a given time period
Depth Perception
ability to
perceive 3D relationship
Binocular depth cues -
a) Binocular disparity
Use 2 eyes
a). each eye gets
difference image
Monocular depth cues
Use 1 eye
Congenital deafness
born without hearing
Conductive hearing loss
trouble delivering sound to
cochlea
Sensorineural hearing loss
can be caused by many
factors
* Aging, head trauma, infections, medications, environmental factors,
tumors, and toxins
Olfactory receptors
like parts that extend from
olfactory bulb into mucous membrane of nasal cavity
Olfactory bulb
:a bulb-like structure at the tip of frontal lobe
where olfactory nerves begin
Meissner’s corpuscles
respond to pressure and lower frequency
vibrations
Pacinian corpuscles
detect transient pressure and higher frequency
vibrations
Merkel’s disks
respond to light pressure
Ruffini corpuscles
detect stretch
Good continuation (continuity)
perceive shapes as
smooth continuous lines
E.g., two overlapping lines, rather than four lines
meeting in center
absolute threshold
minimum amount of stimulus energy that must be present for the stimulus to be detected 50% of the time
bottom-up processing
system in which perceptions are built from sensory input
top-down processing
interpretation of sensations is influenced by available knowledge, experiences, and thoughts
trichromatic theory of color perception
color vision is mediated by the activity across the three groups of cones
wavelength
length of a wave from one peak to the next peak
temporal theory of pitch perception
sound’s frequency is coded by the activity level of a sensory neuron
signal detection theory
change in stimulus detection as a function of current mental state
