What percentage of Alzheimer's patients experience depression or depressive symptoms?

The fluid-filled gap between the terminal button and postsynaptic

membrane is called the a. synaptic cleft. b. synapse. c. synaptic space. d. synaptic junction. e. synaptic membrane.

Which of the following is NOT evaluated by the Diagnostic and Statistical Manual?

a) psychological disorders b) educational level c) health condition d) psychosocial condition.