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PSYC 100 > Week 9 > Flashcards

Week 9 Flashcards

1
Q

Adequate stimulus

A

Type of physical energy to which a sensory recept

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2
Q

Photons

A

Particles that transmit light

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3
Q

Wavelength

A

Distance from crest of one wave to crest of next (Colour)

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4
Q

Amplitude

A

The height of each wave. Intensity depends directly on amplitude (brightness)

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5
Q

Parts of the eye

A

Cornea
Pupil
Lens

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6
Q

Cornea

A

A clear layer that covers the front portion of the eye and contributed to our ability to focus our vision on an object

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7
Q

Pupil

A

The opening in the middle of the iris of the eye; the pupil changes its size to increase or decrease the amount of light let in the eye

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8
Q

Lens

A

The transparent structure located behind the pupil of the eye that changes its shape through the action of the muscles

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9
Q

Accomodation

A

Process of altering one’s existing scheme’s, or ideas, as a result of new information or new experiences

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10
Q

Photoreceptors

A

A receptive cell for vision in the retina, a rod or a cone

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11
Q

Ganglion cell

A

A neuron in the retina that receives information from photoreceptors by means of bipolar cells and from which axons proceed through the optic nerves to the thalamus

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12
Q

Bipolar cells

A

A neuron in the retina that receives information from photoreceptors and passes it on to the ganglion cells, from which axons proceed through the optic nerves to the brain

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13
Q

What do photoreceptors detect?

A
  1. Dark adaption
  2. Colour sensitivity
  3. Colour brightness
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14
Q

Photopigments

A

Complex molecules found in photoreceptors that generate electrical signals in the photoreceptors when they are exposed to light

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15
Q

3 Different kinds of cone receptors

A

Blue
Green
Red - responds to greeny/yellow

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16
Q

3 Different kinds of colour blind

A

Protanopia
Deuteranopia
Tritanopia

17
Q

Protanopia

A

No red cones

18
Q

Deuteranopia

A

No green cones

19
Q

Tritanopia

A

No blue cones

20
Q

Resolution

A

The size of the smallest difference can be identified. A increased resolution means that a smaller difference in location, colour, amplitude, or other attribute can be detected or distinguished

21
Q

Monocular Depth Cues

A

Cues to distance that depend on input from only one eye

22
Q

Bicular Depth Cues

A

Cues to distance that depend on input from both eyes

23
Q

Motion Parallax

A

A monocular depth cue makes us perceive objects that are closer to us to be moving faster than objects that are further away from us

24
Q

Retinal display

A

Images of objects at different distances will fall on different portions of the retina in each eye, causing disparity between the images of the object on the two retina and providing on indication of depth

25
Q

Ventral stream

A

Involves areas at the bottom of the temporal love

26
Q

Dorsal stream

A

Flow of information from the primary visual cortex through the parietal lobe; important for executing actions related to objects

27
Q

Visual agnosia

A

The inability to recognize the identity of an object visually due to damage in the visual processing areas of the brain

28
Q

Prosopagnosia

A

A form of visual agnosia in which face recognition is impaired due to damage to the visual processing areas

29
Q

Akinetopsia/Motion blindness

A

Inability to see motion

30
Q

Lateral inhibition

A

Reduction in activity that neighbouring neurons in the retina cause in each other

31
Q

Receptive field

A

Portion of the visual field in which the presentation of visual stimuli will produce a change in the firing rate of a particular neuron

32
Q

Neural convergence

A

Signals from different neurons come together and meet at a single neuron which can add up the signals or compare them

33
Q

Orientation selective

A

Responses depend on proximity

34
Q

Illusionary contours

A

Lines that are perceived do not exist

PSYC 100 (20 decks)

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