Mechanism of Smell (Olfactory Sensation)
Like taste sensation, smell is also a chemical sensation. For taste, the substance must be in soluble form, and for smell it must be in gaseous form. 1. Impulses do not pass through thalamus. 2. Impulses do not pass to neocortex (no neocortical representation). 3. Receptors are first order neurons in this case and in other sensations the first order [...]