Cognitive psychology - Visual perception
🇬🇧
In English
In English
Practice Known Questions
Stay up to date with your due questions
Complete 5 questions to enable practice
Exams
Exam: Test your skills
Test your skills in exam mode
Learn New Questions
Manual Mode [BETA]
Select your own question and answer types
Specific modes
Learn with flashcards
Complete the sentence
Listening & SpellingSpelling: Type what you hear
multiple choiceMultiple choice mode
SpeakingAnswer with voice
Speaking & ListeningPractice pronunciation
TypingTyping only mode
Cognitive psychology - Visual perception - Leaderboard
Cognitive psychology - Visual perception - Details
Levels:
Questions:
26 questions
| 🇬🇧 | 🇬🇧 |
| What is the function of the cone receptor? | Colour and detail perception mostly located in the fovea |
| What is the function of the rod receptor? | Vision in dim light located in the periphery |
| What is the function of the ganglion cells? | Ganglion cells receive input from a few cones or hundred rod signals from the optic nerve to the LGN (Lateral geniculate nucleus ) |
| What is the Parvocellular (P) pathway? | Sensitive to colour and fine detail - most input from cones |
| What is the Magnocellular (M) pathway? | Most sensitive to motion - most input from rods |
| What is V1 and V2? | V1: primary visual cortex V2: secondary visual cortex |
| What is the receptive field? | The area sensitive to the visual field |
| There are 5 Vs theorised for visual processing, what are they? | V1 and V2 = involved in basic visual processing V3 = deals with forms of perception V4 = deals with colour perception V5 = processes motion perception |
| Feature detectors in V1: | Only certain neurons would fire at specific features on visual screen measured cat's cortex found some neurons reacted specifically to dots, lines, movement etc suggests each element of visual field is broken down within the visual cortex stage |
| Where does Form (shape) processing happen? | V1, V2, V3, V4 process object shape and form |
| Where does colour processing happen? | In the V4 research found more activation in V4 area when looking at colour clips |
| Where does motion processing happen? | V5 - ppts had TMS (magnetic stimulation) to disrupt V5 - ppts had an impaired ability to discriminate between different speeds |
| What is Feature integration theory? | Selective attention plays a role suggestion 1: binding-by-synchrony - features from single object fire in synchrony suggestion 2: patterns of neural activity over time help coordinate binding |
| What is the dorsal pathway? | Where something is visual-for-action processes spatial info to guide movement egocentric (represents object in space relative to self) short-lived representations usually unconscious |
| What is the ventral pathway? | What something is named vision-for-perception identifies objects allocentric (labelling of objects without reference to self) sustained representation usually conscious input from the fovea (details from the cones) |
| What happens when there is dorsal stream damage? | Optic Ataxia: poor guided movement |
| What happens when there is ventral stream damage? | Visual form agnosia (trouble naming visual forms) |
| Perceptions of visual illusions | Researchers found when pointing (using vision-for-action system) the illusion size 5.5% when verbalising a response (using vision-for-perception system) the illusion size was 22% |
| Colour vision: what is the trichromatic theory? | The theory that there are 3 types of cones identified |
| Opponent-process theory: | When some colours such as red and green, oppose one another in processing similarly with blue and yellow, and light and dark |
| What is dual process theory? | Combination of the trichromatic and opponent process theory |
| What is colour constancy? | The tendency for an object/surface to appear to have the same colour despite change in wavelengths i.e. blue mug is blue even if reflections on the mug show a different colour |
| What is depth perception and how do we do this? | Being able to judge depth of an object we do this by using: linear perspective texture interposition - something is infront of other objects shading familiar size image blur motion parallax - when we move sideways and diff. objects move at diff speeds |
| What is Binocular disparity? | Slight different in 2 retinal images |
| What is Size constancy? | Tendency for objects to appear the same size whether their size in the image is large or small |