What condition is an unresponsive state from which a person can be aroused only briefly and with vigorous repeated attempts?

The condition you're referring to is called stupor. It's a state of reduced consciousness characterized by a significant decrease in responsiveness and alertness. A person in stupor can be aroused only briefly and with vigorous and repeated attempts. They may display limited movements, incoherent speech, and reduced awareness of their surroundings. Stupor can result from various causes, including head injury, drug intoxication, metabolic disturbances, or certain neurological disorders. It requires prompt medical attention to identify and address the underlying cause and provide appropriate treatment.