Unit 4 Sensation and Perception

Front

Any change in environment to which an organism responds.

Back

Stimulus

Front

A process by which our sensory receptors and nervous system receive stimulus energy

Back

Sensation

Front

A process of organizing and interpreting sensory information, enabling us to recognize meaningful objects and events

Back

Perception

Front

Each of your senses receives information from the environment, converts it into neural signals in a process called:

Back

Transduction

Front

We have prior knowledge about a stimulus.

Back

Top down processing

Front

We have no prior knowledge about a stimulus. Only sensory information

Back

Bottom up processing

Front

Minimum difference between two stimuli that a subject can detect

Back

Difference Threshold

Front

Minimum stimulation needed to detect a particular stimulus

Back

Absolute Threshold

Front

To perceive a difference between two stimuli, they must differ by a constant proportion

Back

Webers Law

Front

Focus on one stimulus at a time (often at the expense of others)

Back

Selective Attention