Sensation and Perception: Sensation

What occurs anytime that a stimulus activates one of your receptors?

• sensation

• perception

• psychophysics

• sensory adaptoin

The organization of sensory information into meaningful experiences, such as an optical illusion may cause you to question truth, is called:

• sensation

• perception

• psychophysics

• signal-detection

Psychophysics is:

• anytime a stimulus activates one of your receptors

• the organization of sensory information into meaningful experiences

• the study of the relationship between the senses and the physical stimuli that causes them

• the responsiveness of sense to changes to new events and changes in environments

The weakest amount of a stimulus required to produce sensation is:

• sensory adaption

• signal-detection theory

• difference threshold

• absolute threshold

An example of absolute threshold is

• being able to hear a ticking clock about 20 feet away

• gradually increasing light until a person can detect that it’s brighter

• perceiving objects at difference sizes based upon distance

• perceiving lines at the same length through an optical illusion

The minimum amount of difference a person can detect between two stimuli 50% of the time is

• absolute threshold

• difference threshold

• JND

• signal-detection theory

An example of difference threshold is:

• hearing a clock ticking 20 feet away

• gradually increasing light until a person can detect that it’s brighter

• perceiving objects at different distances at different sizes

• perceiving the length of lines based upon a starting point

An example of JND, or just noticeable difference, is

• interrupting perception to the point where your brain cannot tell reality from fiction

• gradually increasing light until a person can detect that it’s brighter

• adding multiple lines to create an illusion to your perception

• an addition of 3 lbs of books to an empty box vs. a 100 lbs box

Weber's Law states that:

• the larger the stimulus, the larger the change required for the person to perceive the ratio change

• the responsiveness of sense to changes to new events and changes in environments

• the weakest amount of a stimulus required to produce sensation

• the study of the relationship between the senses and the physical stimuli that causes them is vital to perception

The idea that the responsiveness of sense to changes to new events and changes in environments is known as:

• Weber's Law

• sensory adaption

• signal-detection theory

• attentive processes