Test 1: Sensation and Perception Flashcards Preview

Psych 101 > Test 1: Sensation and Perception > Flashcards

Flashcards in Test 1: Sensation and Perception Deck (16):
1

Transduction

when sensors in the body covert physical signals from the environment (pressure, light reflections, smell molecule) into neural signals sent to the CNS.

2

Sensory Adaptation

sensitivity to prolonged stimulations tends to decline over time as an organism adapts to current conditions.

3

Parts of the eye

Cornea, Lens, Iris, Pupil, Retina

4

Two types of photoreceptors in eye?

Rods and Cones

5

Fovea

an area of the retina where vision is the clearest and there are no rods.

6

Order of Transduction

-Photoreceptors
-Bipolar neurons
-Ganglion cells
-Optic disk
-Optic nerve
-Brain

7

Monocular Depth Cues

-aspects of a scene that yield information about depth when viewed with only one eye.
-Interposition
-Linear perspective
-texture gradient

8

Binocular Disparity

the difference in the retinal images of the two eyes that provides information about depth.

9

Outer ear

Pinna
Auditory canal
Eardrum

10

Middle ear

-Ossicles
-Hammer
-Anvil
-Stirrup

11

Inner ear

-cochlea: snail shaped, fluid filled tube
-basilar membrane: undulates when vibrations from the ossicles reach the cochlear fluid
-hair cells/receptor cells/cilia: auditory receptor neurons
-Semicircular canals: balance

12

Stereophonic sound

Loudness and timing differences allow us to localize sound

13

Touch receptors

-mechanoreceptors
-thermoreceptors
-Somatosensory cortex

14

Gate-control theory

signals arriving from pain receptors in the body can be stopped or gated by interneurons in the spinal cord via feedback from 2 directions.

15

Smell

Odorant molecules dissolve in mucous membrane of Olfactory Epithelium

16

Taste system contains taste receptors that detect 5 sensations:

Salt
Sour
Bitter
Sweet
Umami