NROC64H3 Chapter 8: chapter 8

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11 Feb 2012
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Gustation and olfaction have a similar task: the detection of environmental chemicals. In fact, only by using both sense can the nervous system perceive flavour. However, the systems of gestation and olfaction are separate and different from the structures and mechanisms of their chemoreceptors, to the gross organization of their central connections, to their effects on behaviour. The neural information from each system is processed in parallel and is merged at rather high levels in the cerebral cortex. It is likely that we can recognize only a few basic tastes. The four obvious taste qualities are: y saltiness y sourness y sweetness y bitterness y umami. Although we taste with our tongue, there are other areas of the mouth (e. g. palate, pharynx, and epiglottis) that are also involved. Odours from the food pass, via the pharynx, into the nasal cavity, where they can be detected by olfactory receptors.

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