Selective mutism is a type of anxiety disorder.

Approximately what percentage of patients who have used a benzodiazepine for more than six months will experience withdrawal effects if they discontinue use of the drug?

a. 10 percent b. 20 percent c. 40 percent d. 60 percent

Connections between various areas of visual cortex are virtually always

A) unidirectional. B) excitatory. C) reciprocal. D) inhibitory. E) serial.