Caffeine arouses people by blocking the receptors for ______

Researchers who study ________ trace the development of cognitive abilities across species and the continuity of abilities from nonhuman to human animals

FIll in the blank with correct word.

The cells in the primary motor cortex are most active ___, and receive sensory information in order to ___

a. In preparation and planning for movements; know where to start the movements b. During involuntary, or reflexive, movements; start the movement c. At or after the end of movements; stop the movement d. During voluntary movements; refine movements as they are performed