Sensation

Question 1

• are mind’s window to thw world thay exists around us.
• occurs when special receptors in the sense organs are activated

Answer 1

Sensations

Question 2

This process of converting outside stimuli, such as light, into neutral activity

Answer 2

Transduction

Question 3

Are specialized forms of neurons, the cells that make up the nervous system.

Answer 3

Sensory receptors

Question 4

A condition that means “joined sensation”

Answer 4

Synesthesia

Question 5

• did studies trying to determine the smallest difference between two weights that could be detected.
• His research led to the formulation known as “Weber’s law of just noticeable differences (JND or the difference threshold)

Answer 5

Ernst Weber

Question 6

• expanded on Weber’s work by studying something he called “absolute threshold”

Answer 6

Gustav Fechner

Question 7

is the lowest level of stimulation that a person can consciously detect 50 percent of the time the stimulation is present

Answer 7

Absolute Threshold

Question 8

Stimuli below the level of conscious awareness

(the word limin means threshold)

Answer 8

Subliminal stimuli

Question 9

Many people believe these stimuli act on the unconscious mind, influencing behavior in a process called

Answer 9

Subliminal perception

Question 10

Demonstrated the power of subliminal perception in advertising.

Answer 10

James Vicary

Question 11

• ERPs
• fMRI

Answer 11

• Event-related potentials
• functional magnetic resonance imaging

Question 12

is used to compare our judgments, or the decisions we make, under uncertain conditions.

Answer 12

Signal detection theory

Question 13

It is the way the brain deals with unchanging information from the environment.

Answer 13

Habituation

Question 14

Is another process by which constant, unchanging inofrmation from the sensory receptors is effectively ignored.

Answer 14

Sensory Adaptation

Question 15

• There’s a constant movement of the eyes, tiny little vibrations called
• or saccadic movements

Answer 15

Microsaccades

Question 16

First proposed that light is actually tiny “packets” of waves.

Answer 16

Albert Einstein

Question 17

• These “wave packets” are called
• have specific wavelengths associated with them

Answer 17

Photons

Question 18

Three aspects to our perception of light:

Answer 18

Brightness
Color
Saturation

Question 19

is determined by the amplitude of the wave — how high or low the wave actually is.

Answer 19

Brightness

Question 20

Is largely determined by the length of wave.

Answer 20

Color or Hue

Question 21

are found at the blue end of the visible spectrum

Answer 21

Short wavelength

Question 22

are found at the red end.

Answer 22

longer wavelengths

Question 23

refers to the purity of the color people perceive.

Answer 23

Saturation

Question 24

The surface of the eye is covered in a clear membrane

Answer 24

Cornea

Question 25

• PRK
• LASIK

Answer 25

• Photoreactive Keratectomy
• Laser-assisted in situ keratomileusis

Question 26

the next visual layer is a clear, watery fluid

Answer 26

Aqueous humor

Question 27

The light from the visual image then enters the interior of the eye through a hole, called ___, in a round muscle called__

Answer 27

Pupil ; Iris

Question 28

Behind the iris, suspended by muscles, is another clear structure

Answer 28

Lens

Question 29

In a process called _____, the lens changes its shape from thick to thin, enabling it to focus on objects that are close or far away.

Answer 29

Visual accommodation