Newly formed neurons travel to their final locations in the brain along

In Parkinson's disease, a loss of cells that produce _______________ is responsible for tremors and muscle rigidity

a. acetylcholine b. dopamine c. GABA d. glutamate

The research about kittens raised in horizontal or vertical environments demonstrates the concept of _______________

a. sensory adaptation b. depth perception c. a perceptual set d. critical periods