4.1

Question 1

Sensation

Answer 1

The sense organ’s detection of external stimuli, their responses to the stimuli, and the transmission of these responses to the brain.

Question 2

Perception

Answer 2

The processing, organization, and interpretation of sensory signals; it results in an internal representation of the stimulus.

Question 3

Sensory Coding

Answer 3

When our sensory organs translate the physical properties of stimuli into patterns of neural impulses.

Question 4

Transduction

Answer 4

A process by which sensory receptors produce neural impulses when they receive physical or chemical stimulation

Question 5

Absolute Threshold

Answer 5

The minimum intensity of stimulation that must occur before you experience a sensation.

Question 6

Difference Threshold

Answer 6

The minimum amount of change required for a person to detect a difference.

Question 7

Weber’s Law

Answer 7

States that the just noticeable difference between two stimuli is based on a proportion of the original stimulus, rather than on a fixed amount or difference.

(the more intense the stimulus, the bigger the change needed for you to notice)

Question 8

Signal detection theory (SDT)

Answer 8

A theory of perception based on the idea that the detection of a faint stimulus requires a judgement– it is not an all or nothing process.