Internal stimuli are thoughts or physiological sensations that trigger a living being to do something. The internal stimulus of hunger, for instance, triggers normal living things to seek food.
Internal stimuli ensure living things are motivated to perform life-sustaining things, like eat, excrete and reproduce. While many internal stimuli, like hunger or sleepiness, occur spontaneously, most internal stimuli are reactions to external stimuli. For example, a male cat's stimulus to reproduce is triggered when he smells, hears or sees a female cat in heat.
Instincts are intertwined with internal stimuli as well. These complex interactions depend on internal stimuli, external stimuli and a programmed response to work properly. An example would be the instinct of birds to fly south for winter. They are externally stimulated by a drop in temperature and internally stimulated by hunger caused by food scarcity, so they instinctively fly southward where it's warmer and more food is available.
An understanding of how internal stimuli work is also important to marketers and others who depend on the manipulation of human behavior. For example, restaurants have learned to vent food smells outside into sidewalks and streets. The odor becomes an external stimulus that triggers hunger or appetite and may drive customers into the restaurant to soothe that internal stimulus.Learn More
Internal noise consists of distractions inside the brain, such as thoughts, that interrupt the communication process. Internal noise occurs while a person is trying to speak. It can cause the person to lose sight of what he wants to say or is trying to communicate.Full Answer >
The internal nares serve as a filter for the respiration system, keeping particles from making it into the trachea and the lungs. In addition to cleaning out the air, the internal nares also provide warmth and moisture to the air as it makes its way to the lungs.Full Answer >
One easy way for a kid to convince his parents to do something is to ask politely. Showing gratitude and appreciation can go a long way toward helping parents feel that giving a child too many things or agreeing to multiple requests is not spoiling him. If parents know that the child is aware of and truly grateful for all he has, they may be more inclined to be agreeable.Full Answer >
To use a Black & Decker drill, choose a torque setting, use the lock switch to select a direction, and depress the trigger to make the drill run. You need a Black & Decker drill with a compatible battery pack, a battery charger and drill bits.Full Answer >