Fichas
six
Fichas del conjunto (27)
- 1linear speed depends onviewing distance
- 2degrees per second =angular distance
- 3waterfall illusion (motion after effect) showed whatif you look at water for short period of time then look at rocks, it looks like rocks are moving
- 4how does motion after effect workstationary stim; non opponent cells have normal AP, opponent motion cell (OMC) says stationary. downward motion; down NOC has lots of action potentials, OMC says its down but turns down activity. post adaptation stationary stim; no AP on down NOC and some on up, so OMC things its up
- 5a population of cells is calledneural code
- 6perceived motion is encoded by apopulation of cells
- 7for static stimuli, neural code responds atsame (low) rate
- 8what is the name for cells reducing their outputadaptation
- 9what is the motion-after effectperceived speed reduces with time
- 10what is motion contrastalters speed perception
- 11what is the principle of univariancecells cannot separate speed and contrast. can only have one output so it cannot signal two things, it will become confused
- 12motion cells respond more strongly to what two thingshigh contrast stimuli
faster motion - 13does perceived speed reduce with reduced contrastyes
- 14what is the name for when large scale motion makes you think you are movingvection
- 15what is vectionwhen large scale motion makes you think you are moving
- 16what happens in the drum experiment of induced motion and vectionleads to cue conflict and vestibular (ears) cues , leading to sickness reflex (travel sickness)
- 17what is illusory motion and give 1 examplesensation of motion in a static stimulus
.e.g motion after effect - 18are apparent motion and illusory motion the sameno
- 19what cells become active and cause the illusion when looking at the enigma imagemt
- 20why do we see motion in the enigma imagestripes over excite orientation cells in v1/v2/v3, these are also motion sensitive so pass motion signal to mt
- 21what is the aperture problemif you view a moving stim through small aperture so you can only see one edge, u will only see motion at right angles to edge
- 22explain reasoning for aperture problemmotion cells in v1 have small receptive fields and only respond to short edges, so can only signal motion at right angles to preferred orientation
- 23which cells integrate all signals to derive true motionmt
- 24explain the reasoning for the pinna illusion (circles rotate when u move back and forth)diamond patterns are good stim for v1 bc oriented edges, as you rock the v1 cells signal motion orthogonal to tilt of each diamond, mt integrates this into combination of rotation and expansion (contraction) but brain knows ur moving so discounts expansion/contraction signal and just see rotation
- 25biological motion can conveysocial cues e.g. gender, happiness
- 26where is biological motion processedsuperior temporal sulcus (close to mt), (links with range of sequential+social tasks e.g. theory of mind, eye gaze, attractiveness, speech, emotional info)
- 27aperture effect can lead to errors ofmotion perception
Información
- Descripción
- (1 vision) PSYCHOLOGY YEAR 2 Fichas sobre six, creado por Ki Rai el 24/11/2018.
- Creado por
- Ki Rai
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