Multisensory integration

perceptual concept

dominance of one sense over other modalities creating a percept due to spatial reliability

ex - ventriloquist effect, nose/olfaction captured by mouth/taste&touch

combining/integrating sensory sources

combines alarm systems

helps with object identification

allows for visual-auditory localization

sufficient information for control of locomotion

object unity

cohesion of the world achieved through integrating sensory information

redundant information

2+ sensations about a single events

ex - what you see & what you hear

non-redundant information

sensing the movement/spatial orientation of the sensor

ex - what you see & how the eyes move

superior colliculus

single cell in cats that receives input from multiple senses therefore multimodal receptive fields

bimodal neurons

responds to light and touch

in premotor cortex of monkeys

ex - hand-centered visual receptive field & tactile receptive field

crossmodal identification

fMRI activation in the same areas that activate in respond to different senses

ex - integration of visual & auditory information

unimodal areas

area of brain that only activates in response to one sense

multimodal areas

area of brain that activates to 2+ senses (not necessarily at the same time)

body schema

dynamic online-representation of the body in space from somatosensory afferences

rubber hand illusion

manipulation of body schema through vision

out of body experience (OBE)

sensations in which consciousness becomes detached from the body, taking up a remote view point

caused when stimulating angular gyrus

vestibular illusions

phenomenal consciousness

experience, subjectivity

may be similar to multisensory capture

we will never know what it is