Multimodeal integration for the representation of space in the posterior parietal cortex. Andersen & A, R. Philosophical Transactions of the Royal Society of London B, 352:1412-1428, 1997.
abstract   bibtex   
The posterior parietal cortex has long been considered an 'association' area that combines information from different sensory modalities to form a cognitive representation of space. However, until recently little has been known about the neural mechanisms responsible for this important cognitive process. Recent experiments from the author's laboratory indicate that visual, somatosensory, auditory and vestibular signals are combined in areas LIP and 7a of the posterior parietal cortex. The integration of these signals can represent the locations of stimuli with respect to the observer and within the environment. Area MSTd combines visual motion signals, similar to those generated during an observer's movement through the environment, with eye-movement and vestibular signals. This integration appears to play a role in specifying the path on which the observer is moving. All three cortical areas combine different modalities into common spatial frames by using a gain-field mechanism. The spatial representations in areas LIP and 7a appear to be important for specifying the locations of targets for actions such as eye movements or reaching; the spatial representation within area MSTd appears to be important for navigation and the perceptual stability of motion signals.
@article{ Andersen97,
  author = {Andersen, R. A},
  title = {Multimodeal integration for the representation of space in the posterior
	parietal cortex},
  journal = {Philosophical Transactions of the Royal Society of London B},
  year = {1997},
  volume = {352},
  pages = {1412-1428},
  abstract = { The posterior parietal cortex has long been considered an 'association'
	area that combines information from different sensory modalities
	to form a cognitive representation of space. However, until recently
	little has been known about the neural mechanisms responsible for
	this important cognitive process. Recent experiments from the author's
	laboratory indicate that visual, somatosensory, auditory and vestibular
	signals are combined in areas LIP and 7a of the posterior parietal
	cortex. The integration of these signals can represent the locations
	of stimuli with respect to the observer and within the environment.
	Area MSTd combines visual motion signals, similar to those generated
	during an observer's movement through the environment, with eye-movement
	and vestibular signals. This integration appears to play a role in
	specifying the path on which the observer is moving. All three cortical
	areas combine different modalities into common spatial frames by
	using a gain-field mechanism. The spatial representations in areas
	LIP and 7a appear to be important for specifying the locations of
	targets for actions such as eye movements or reaching; the spatial
	representation within area MSTd appears to be important for navigation
	and the perceptual stability of motion signals.},
  en_number = {4.2:6}
}

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