Chapter 12- Intro To Sensation Flashcards Preview

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Flashcards in Chapter 12- Intro To Sensation Deck (8):
1

Sensation

The process by which our sensory receptors and nervous system receive and represent stimulus energies from our environment

2

Perception

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

3

Bottom-up processing

Analysis that begins with the sensory receptors and works up to the brains integration of sensory information

4

Top-down processing

Drawing on our knowledge and experiences to make judgments of what we are experiencing

5

Absolute threshold

The minimum stimulation needed to detect a particular stimulus 50 percent of the time

6

Signal detection theory

A theory predicting how and when we detect the presence of a faint stimulus (signal) amid background stimulation (noise). Assumes there is no single absolute threshold and that detection depends partly on a persons experience, expectations, motivation, and level of fatigue.

7

Subliminal

Below one's absolute threshold for conscious awareness--- without our awareness; extraordinary suggestive powers

8

Priming

The activation (often unconsciously) of certain associations that predispose ones perception, memory or response