Ch 4 And 5 Sensations

Question 1

Afterimage

Answer 1

A visual image that persist after a stimulus is removed

Question 2

Binocular Depth cues

Answer 2

Clues about distance based on views of the two eyes

Question 3

Covergence

Answer 3

A cue to depth that involves seeing the eyes converging toward each other as they focus on closer objects

Question 4

Contrast

Answer 4

1. the condition wherein the variations between two items, happenings, or concepts are heightened by the comparison of their alike traits. 2. with regard to cognitive psychology, reference: effect. 3. with regard to the analysis of variance, a comparison amidst set means utilizing one degree of freedom. 4. with regard to making judgments, the variation discovered between an objective being judged and facets of the context it is judged within.
   CONTRAST: “Their continually contrasting points of view eventually led them to divorce court.”

Psychology Dictionary: What is CONTRAST? definition of CONTRAST (Psychology Dictionary)

Question 5

Difference threshold

Answer 5

The minimum difference between two stimuli required for detection 50 percent of the time. We experience the difference threshold as just a noticeable difference

Question 6

Depth perception

Answer 6

Interpretation of visual cues that indicate how near or far away objects are

Question 7

Distance cues

Answer 7

An auditory or visual cue to determine the distance to an object. See depth cue.
DISTANCE CUE: “A distance cue lets us judge the distanmce to a stimulus

Question 8

Frequency

Answer 8

The number of complete wavelengths that pass a point in a given frequency

Question 9

Fechners law

Answer 9

A psychosocial law stating that larger and larger increases in stimulus intensity are required to produce perceptible increments in the magnitude of sensation

Question 10

Figure Ground

Answer 10

The organization of the visual field into objects the stand out from their surrondings

Question 11

Gestalt principles

Answer 11

The term Gestalt may be defined as an object, idea, or experience as being more than the sum of its parts. When you put the parts together, you get the whole - in other words, you get the Gestalt.

Gestalt is the basis of Gestalt Psychology, which is the study of how people integrate and organize perceptual information (information they perceive - things they see, hear, etc) into meaningful wholes.

For example, can you tell what this is?: 8> )

The reason you may be able to recognize a face is because you’re able to see an overall form (a face) just by putting a few symbols or shapes together. In other words, you see the Gestalt, not just the symbols. This is incredibly useful but can sometimes lead to problems such as illusions or visual tricks.

Read more: http://www.alleydog.com/glossary/definition.php?term=Gestalt#ixzz3mW3ohKlT

Question 12

Just noticeable difference

Answer 12

The smallest difference in the amount of stimulation that a specific sense can detect

Question 13

Monocular disparity

Answer 13

Depth cues such as introspection and linear spective available to either eye alone

Question 14

Opponent process theory of color vision

Answer 14

The theory that color perception depends on receptors that make antagonist responses to three pairs of colors

Question 15

Perception

Answer 15

The selection organization and interpretation of sensory input

Question 16

Phi Phenomenon

Answer 16

The illusion of movement created by presenting visual stimuli in rapid succession

Question 17

Sensation

Answer 17

The stimulation of sense organs

Question 18

Sensory adaptation

Answer 18

A gradual decline in sensitivity to prolonged stimulation

Question 19

Signal detection theory

Answer 19

A psychophysiological theory proposing that the detection of stimuli involves decision process as well as sensory processes which are influenced by a variety of factors beside the physical intensity of a stimulus

Question 20

Top down processing

Answer 20

In form a perception a progression from the whole to the elements

Question 21

Trichromatic theory of color vision

Answer 21

Theory of color vision that holding that the human eye has 3 types receptors with differing sensitivities to different wavelengths

Question 22

Absolute Threshold

Answer 22

The minimum amount of stimulation that an organism can detect for a specific type of sensory input

Question 23

Transduction

Answer 23

Conversion of one form of energy into another. In sensation the transforming of stimulus energies such as sights, sounds and smells into Neural impulses our brain can interpret

Question 24

Visual angle

Answer 24

the angle subtended by an object at the lens of the eye

Question 25

Visual depth perception

Answer 25

Depth perception is the visual ability to perceive the world in three dimensions (3D) and the distance of an object.

Question 26

Webers law

Answer 26

The principle that to be perceived as different two stimuli must differ by constant minimum percentage

Question 27

Consciousness

Answer 27

Our awareness of ourselves and our environment

Question 28

Unconsciousness

Answer 28

A reservoir of mostly unaccepted thoughts wishes feelings and memories. According to contemporary psychologist information processing of which we are unaware of

Question 29

Circadian Rhythm

Answer 29

Circadian rhythms are what people often refer to as your body’s internal, biological clock. The typical human circadian rhythm occurs on a cycle of approximately 24 hours. However, the clock is not really functioning on time, but on body temperature. It is just that body temperature fluctuates on somewhat of a regular type of schedule, and so many people often believe that the circadian rhythms are time oriented instead of body temperature oriented. For example, your body temperature begins to increase in the morning (as you wake and start your day), then gets higher during the day while you are active, and begins to drop during the evening, producing feelings of fatigue and preparing for sleep.

Where would you like to study
Circadian Rhythms?

Adler

Get the Word Of The Day delivered to your inbox

© 1998-2015, AlleyDog.com. All material within this site is the property of AlleyDog.com. This material may not be reprinted or copied for any reason without the express written consent of AlleyDog.com.

Read more: http://www.alleydog.com/glossary/definition.php?term=Circadian%20Rhythms#ixzz3mW8kJRUJ

Question 30

REM sleep

Answer 30

Rapid eye movement sleep; a recurring sleep stage during which vivid dreams occur. Also known as paradoxical sleep because the muscles are relaxed but other body systems are active

Question 31

Addiction

Answer 31

Compulsive craving of drugs or certain behaviors despite known adverse consequences

Question 32

Tolerance

Answer 32

The diminishing effect with the regular use of the same dose of a drug, requiring the user to take larger and larger doses before experiencing the drugs effect

Question 33

Withdrawal

Answer 33

The discomfort and distress that follow discontinuing an addictive drug or behavior

Question 34

Depressants

Answer 34

Drugs that reduce neural activity and slow body functions

Question 35

Stimulants

Answer 35

Drugs that excite neural activity and speed up body functions