"If you felt the need for outside stimulus, you must be getting better."

These have the ability to respond to outside stimuli separately from the main nervous system.

But before long, Primavera provided enough outside stimulus for me.

The planets will act together to outside stimulus and act on each other.

She remained there six more weeks, barely responsive to outside stimuli.

What does the body produce in reaction to those outside stimuli?

During times of sleep, there's usually a reduction in physical activity and a decreased response to outside stimuli.

"I can't control an involuntary physical reaction to outside stimuli."

Your baby is beginning to respond to outside stimuli.

The subject's awareness is suddenly invaded by an outside stimulus.