Multisensory body illusions Lecture 1

Created by: Maddy Hurd
Created on: 18-05-18 12:16

What neurophysiological evidence is there for multisensory integration?

Graziano et al. (1994): Intraparietal and Premotor cortices, single cell studies monkeys, cells which respond to touch of arm as well as vision irrelevant from position in space. Graziano et al. (2000) greatest discharge when spatially congruent

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What did Armel and Ramachandram (2003) conclude fro their study?

Involved measuring intensity ratings of illusion and SCR when rubber hand threatened. Can trigger autonomic response, RHI induced by Bayesian perceptual learning - high likelihood visual + tactile stimuli occurring from one common event.

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Evaluation of Ehrsson et al. (2007) vividness of illusion related to threat response in the brain(insula + anterior cingulate)

Unclear whetehr engagement of this system represents causal mechanism of ownership or consequence of ownsership in multisensory areas.

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What are some constraints of the RHI?

Lloyd (2007) - fake hand needs to be near real hand 27.5cm, Preston (2013) - has to be near body, Asynchronous - need for temporal congruency of somatic and visual events, Graziano et al. (2000) - multisensory neurons, Ehrsson et al. (2004) - 30%immu

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Possible clinical implications of RHI research?

Ehrsson et al. (2008) - synchronised stump and finger stroking of prosthetic hand produce RHI in amputees.. Creating prosthesis with tactile sensors on figertips connected to tacctile stimulators on stump restore rudimentary tactile sensibility

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Other cards in this set

Card 2

Front

What did Armel and Ramachandram (2003) conclude fro their study?

Back

Card 3

Front

Evaluation of Ehrsson et al. (2007) vividness of illusion related to threat response in the brain(insula + anterior cingulate)

Back

Card 4

Front

What are some constraints of the RHI?

Back

Card 5

Front

Possible clinical implications of RHI research?

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Multisensory body illusions Lecture 1