The metabolism of glycogen increases the brain levels of __________, which in turn promotes __________.

Recent studies indicate that humans may possess as many as __________ different olfactory receptor genes.

The primary symptom of narcolepsy is __________.

Sudden angular rotation of the head through a plane is sensed by __________ within __________.

Secretion of orexin in the __________ produces __________.

The base of the basilar membrane is to __________ as the tip of the basilar membrane is to __________.

The sleep stages 1-4 are termed __________, but stages 3 and 4 are specifically referred to as __________.

The perception of low pitch sounds involves __________ located at the __________ of the basilar membrane.

__________ are located on in the glabrous skin, such as the fingertips, and are used to detect edges and contours, such as Braille-like stimuli.

The cutaneous senses signal information about stimuli that interact with __________.