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Flashcards in Multisensory integration - cue combination Deck (50)
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1

tactile info when engaging/touching/manipulating an object =

haptic feedback

2

different senses might provide conflicting information about a sensory stimulus =

sensory conflicts

3

sensory conflicts need to be resolved. How?

we need to make a choice to resolve the conflict

4

does vision or touch dominate judgement of object size?

vision dominates perceived object size

5

what is it called when visual input dominates to provide a more accurate judgement of object size?

visual capture > this is the VISUAL CAPTURE EFFECT

6

does touch have any influence on the visual capture effect?

yes but only small but consistent influence

7

what were the 3 ways Rock and victor assessed visual capture?

pointing, feeling, drawing

8

is there a strict sensory hierarchy?

no, audition can dominate vision

9

who conducted a study to show that audition can dominate vision by testing for sensory conflict?

Shams et al, 2000

10

what were the results from Shams et al, 2000 study?

number of auditory beeps determined the number of reported visual flashes, sound was followed more closely than sight e.g. 1 flash + 2 beeps = 2 beeps reported. SHOWS WE TRUST AUDITION MORE THAN VISUAL SENSE

11

what is the modality precision hypothesis?

modality with highest precision and lowest uncertainty is chosen depending on the task type

12

following the modality precision hypothesis > spatial task uses _____, temporal task uses ______

vision, audition

13

what 3 things is sensory uncertainty due to?

perceptual limits, neural noise, cognitive resource limits

14

communication between neurons at the synapse doesn't work > leads to uncertainty. this is due to?

neural noise

15

different senses have different levels of ______ uncertainty

noise

16

how did Ernst and Banks (2002) shift ppts attention to different senses?

by manipulating the level of sensory uncertainty

17

what does MLE stand for?

Maximum Likelihood Estimation

18

what is a normative model?

optimal solution to how a problem should be solved

19

what is a normative model based on?

theory

20

what is a process model?

how a problem is actually solved

21

what is a process model based on?

data

22

how should we solve problem of sensory integration?

pick integration method that minimises sensory uncertainty > maximum likelihood estimator

23

when making an estimate based on haptic and visual inputs what is the best way to get a maximum likelihood estimation?

combine senses and their uncertainty to get an INTEGRATED SIGNAL with the smallest possible combined uncertainty

24

a large distribution means high ______ which means high sensory _______ and a lower _______

variance, uncertainty, probability

25

a ______ distribution means low variance which means ___ sensory uncertainty and a _____ probability

small, low, higher

26

different senses have different amounts of what?

sensory noise

27

when there are 2 different sense inputs (visual and haptic) there are 2 distributions produced because of 2 different estimates. why are 2 estimates produced?

because sensory conflict is created

28

how are 2 probabilities integrated if both estimates have the same amount of variance and uncertainty level?

place the integrated estimate exactly in the middle

29

does a combined estimate of 2 sense inputs have lower or higher uncertainty?

lower! smaller variance = lower uncertainty > higher probability

30

when integrating probabilities, if visual uncertainty is lower than haptic uncertainty what does theory suggest we should trust?

vision