When four-month-old Sylvia continues to gaze at her mother, she is displaying

Proximity is the tendency __________

a) to perceive objects, or figures, on some background. b) to complete figures that are incomplete. c) to perceive objects that are close to each other as part of the same grouping. d) to perceive things with a continuous pattern rather than with a complex, broken-up pattern.

The ___ is (are) sometimes lesioned to alleviate symptoms of Parkinson's in patients who are unresponsive to or cannot use the standard drug treatment

a. globus pallidus and subthalamic nucleus b. putamen and caudate c. caudate and substantia nigra d. primary motor cortex