The immediate and direct response of the sensory organs to simple stimuli.
Sensation from exposure to stimuli varies according to: the quality of the individual’s sensory receptors, the amount or the intensity of the stimuli, interest in stimuli, ability to catch attention
As sensory input decreases, our ability to detect changes in input or intensity increases.
: “The lowest level at which an individual can experience a sensation
- Differential Threshold (JND or Weber's Law):The minimal difference that can be detected between two stimuli.
JND is relative to the intensity of the first stimulus. It holds true to all the senses and at almost all intensities.
: stimuli below conscious awareness i.e. perceive stimuli without being consciously aware of the stimuli in question.