Perception Part 1

The weakest level of a stimulus that can be correctly detected at least 50% of the time.

• opponent process theory
• absolute threshold
• perceptual constancy

The idea that pain can only be experienced if pain messages can pass through a gate in the spinal cord on their way to the brain.

• place theory
• gate control theory
• opponent process theory

Difference thresholds increase in proportion to the size of the stimulus.

• Difference threshold
• Weber's law
• Absolute threshold

Temporary decrease in sensitivity to a stimulus that occurs when stimulation is unchanging. (nose blindness)

• absolute threshold
• schemas
• sensory adaptation

What is Sensation?

• Sensation refers to the process of sensing our environment through touch, taste, sight, sound, and smell.

• refers to how the mind process information

• refers to how we store information

Perception ca be defined as-

• how we perceive different things

• how we interpret the information from the external world

• how we sense things from the external world

Absolute threshold refers to

• The maximum stimulation required to say anything

• minimum usage of sense organs

• The minimum stimulation necessary to detect a particular stimulus

What is Signal Detection theory?

• Ability to detect various sounds and colors

• Ability to focus on one stimulus and ignore others

• Ability to see traffic signals

A principle that states, for any change in a stimulus to be detected, a constant proportion of that stimulus must be added or subtracted.  

• Gate-Control Theory
• Weber's Law
• Difference Threshold
• Multiple constant 

The smallest difference between two stimuli that can be detected 50% of the time is called

• absolute threshold
• difference threshold
• sensory adaptation
• subliminal perception