In point of fact, many stimuli are beneath the " threshold " of a man's consciousness.
The threshold-value of the stimuli adequate for the various senses may be extraordinarily lowered.
By the rules of induction from concomitant variations, we are logically bound to infer the realistic conclusion that outer physical stimuli cause inner sensations of sensible effects.
Breath holding spells are episodes of brief, involuntary cessations of breathing that occur in children in response to stimuli such as anger, frustration, fear, or injury.
They are the power Of receiving impressions or stimuli from the exterior, and of communicating with each other, with the view of co-ordinating a suitable response.
