Sensation & Perception

Sensation VS. Perception? Or will they be a team?

Understanding the Seperation of Each

Sensation is the process of detecting physical energy from your environment and turn it into signals to give the brain. Perception gives the signals meaning an is usually influenced by memory, motivation, emotion, and even culture at times. This process of converting these physical signals in the environment into neural activity in the brain is known as transduction. This relationship is mainly studied by psychophysics (the study of our sensitivity to stimuli of different strengths).


Absolute threshold is the minimum stimulation needed to cause perception. while the signal detection theory claims that there is no absolute threshold and that the threshold changes with factors such as fatigue, attention, expectation, motivation, and emotional distress. Difference threshold on the other hand gets to have its own law! Kind of unfair, no? The difference threshold is the minimum difference between any two stimuli that can be detected 50% of the time.

weber's law

This law basically indicates that difference thresholds increase in proportion to the size to the size of the stimulus. it was also refered to as the just noticeable difference (jnd).

what stimulats your brain?

selective attention

Selective attention is the capacity for or process of reacting to certain stimuli selectively while there are several stimulus in the environment. We are constantly given large sums of stimulants at the same time. Some may have our complete attention while everything else blurs into the background and is given almost no attention at all. Selective attention is the ability to organize and decide where your attention will be and what fades away.