sensory Flashcards
unique experience associated with a particular modality begins at _____
receptor
initial interaction of stimulus with receptor is _____: transformation of physical energy into neural signal
transduction
the type of energy that a given receptor type is most sensitive to
adequate stimulus
stimulation site(s) that elicit neural response
receptive field
types of receptors located on end of primary afferent neuron
somatosensory (mechanoreceptors, thermoreceptors, chemoreceptors, nociceptors)
olfaction (chemoreceptors)
types of receptors located on specialized receptor cell
vision (photoreceptors)
audition (mechanoreceptors)
balance (mechanoreceptors)
taste (chemoreceptors)
systems that use physical (direct) interaction of stimulus with membrane protein to open ion channel
somatosensory, vestibular, auditory, taste
systems that use molecular interaction of stimulus with membrane protein (G-protein)
vision, taste, olfaction
examples of direct transduction pathways
- Na transduction in the taste system
- mechanoreceptors Piezo1 and Piezo2- respond to pressure
- TRP receptors: Vanilloid receptor
vanilloid receptor (TRPV1 or V1) responds to:
- capsaicin
- heat (42 degree C)
- protons
stimulation of the vanilloid receptor results in _____
influx of cations (Na and Ca)
indirect G-protein coupled receptor systems
- olfaction (Golf and Gs)
- vision (rhodopsin)
- taste (gustducin)