gustation (taste), olfaction (smell) and touch Flashcards
what are the three chemical senses?
gustation, olfaction and touch
how is gustation produced?
by stimulating tase buds
what are the four dimensions of gustation?
sweet, sour, salty and bitter
what is the secret fifth dimension?
umami (savory)
does each tastebud respond to all four dimensions?
N O !!!!!!! (stoopid)
what does our perception of specific tastes result from?
particular mixtures of neural signals related to these basic dimensions
how do we taste?
substances we eat interact with saliva to form a chemical solution, which then stimulate receptor cells in taste buds through taste pores
many widespread taste preferences can be related back to?
evolutionary selection pressures
how do we smell?
signals from receptors are sent to the olfactory bulb
where are olfaction receptors found?
in the upper nasal cavity
diverse and complex odors are coded/recoded as?
individual and distinct rather than an additive mixture
what are pheromones
chemical signals found in natural body scents
what adaptive purposes can pheromones provide?
warning, navigation and mating
we have touch receptors specialized for detecting three kinds of properties, what are they?
pressure, pain and temperature
where are touch signal receptors sent to?
somatic sensory cortex
