Sensation & Perception Flashcards
sensory receptors
sensory nerves that respond to stimuli
senosry ganglia
collection of cell bodies outside the CNS
projection areas
areas in the brain that analyze sensory input
absolute threshold
the minimum of stimulus energy that will activate a sensory system
threshold of conscious perception
the minimum stimulus energy that will create a signal large enough in size and long enough in duration to be brough into awareness
difference threshold
the minimum difference in magnitude between two stimuli before one can percieve this difference
weber’s law
just noticeable difference for a stimulus is proportional to the magnitude of the stimulus
signal detection theory
refers to the effects of nonsensory factors, such as:
* experiences
* motives
* expectations on perception of stimuli
* accounts for response bias
adaptation
refers to a increase or decrease in sensitivity to a stimulus
Hearing
what makes up the outer ear?
- pinna (auricle)
- external auditory canal
- typamic membrane
Hearing
What makes up the middle ear?
- malleus: hammer
- incus: anvil
- stapes: stirrup
Acronym: MIS and HAS
Hearing
what makes up the inner ear?
- bony labyrinth: filled with perilymph
- membranous labyrinth: filled with endolymph
Hearing
what makes up the membranous labyrinth?
- cochlea (sound)
- utricle & saccule (linear acceleration)
- semicircular canals (rotational acceleration & balance)
Hearing
what makes up projection areas?
- superior olive
- inferior colliculus
Hearing
superior olive
- localizes sound
- located in brain stem
