Question

enabled: final - updated may 2024
you can smell the fragrance of your deodorant when you just put it on, but after a little while the smell fades. what explains this phenomenon?
multiple choice
the sensory projection of olfaction
the projection pathway of olfaction
the tonic nature of olfaction
the phasic nature of olfaction
the fast adaptation of the primary olfactory cortex to the smell of your deodorant

Explanation:

The phasic nature of olfaction refers to the rapid adaptation of the olfactory system to a constant stimulus. When you first apply deodorant, the olfactory receptors are highly sensitive to the new scent. However, over time, the receptors adapt to the continuous presence of the odor molecules, leading to a diminished perception of the smell. This is a normal physiological process that allows the olfactory system to remain responsive to new and potentially important odors in the environment. The other options do not accurately describe this phenomenon:

• The sensory projection of olfaction refers to how olfactory information is transmitted to the brain, not adaptation.
• The projection pathway of olfaction describes the neural routes of olfactory signals, not adaptation.
• The tonic nature of olfaction would imply a sustained response, which is the opposite of what is observed here.
• The fast adaptation of the primary olfactory cortex is not the correct mechanism; it is the olfactory receptors that primarily adapt in this context.

Answer:

The phasic nature of olfaction