Abstract
The sense of smell is the least understood of all human senses. The olfaction process is a complex one involving both physiological peripheral sensing and cognitive and emotional central processing. The olfactory receptor neurons are situated in the olfactory epithelium located in the upper portion of the nasal cavity. These cells project cilia into the mucus lining of the nasal cavity, and those are responsible for the first stages of the olfaction process. The binding of an odor molecule to the receptor results in an electrical signal that is transducted through the neuron’s axon to the olfactory bulb, and causes the release of a neurotransmitter (Berkowicz et al. 1994), which activates mitral and tufted cells within the olfactory bulb to carry the information further into the brain. Within the brain, the olfactory system is closely linked to areas of the brain that are involved with emotion (i.e., Amygdala) (Cain and Bindra 1972; Zald and Pardo 1997), memory, and learning (i.e., the hippocampus).
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Sterer, N., Rosenberg, M. (2011). Odor Perception. In: Breath Odors. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-19312-5_4
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DOI: https://doi.org/10.1007/978-3-642-19312-5_4
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