Humans, like other mobile organisms, rely on spatial representations to guide navigation from place to place. Although previous work has identified neural systems involved in wayfinding, the specific spatial codes supported by these systems are not well understood. We use functional magnetic resonance imaging to identify regions within the human medial temporal and medial parietal lobes that encode two fundamental spatial quantities—location and facing direction—in a manner that abstracts away from sensory inputs. University students were scanned while viewing photographs taken at several familiar campus locations. Multivoxel pattern analyses indicated that the left presubiculum, retrosplenial complex, and parietal-occipital sulcus coded location identity even across non-overlapping views, whereas the right presubiculum coded facing direction even across noncontiguous locations. The location and direction codes supported by these regions may be critical to our ability to navigate within the extended environment and to understand its large-scale spatial structure.
Abstract Representations of Location and Facing Direction in the Human Brain
Lindsay K Vass,Russell A. Epstein
Published 2013 in Journal of Neuroscience
ABSTRACT
PUBLICATION RECORD
- Publication year
2013
- Venue
Journal of Neuroscience
- Publication date
2013-04-03
- Fields of study
Biology, Medicine, Psychology
- Identifiers
- External record
- Source metadata
Semantic Scholar, PubMed
CITATION MAP
EXTRACTION MAP
CLAIMS
- Functional magnetic resonance imaging with multivoxel pattern analysis identified the left presubiculum, retrosplenial complex, and parietal-occipital sulcus as coding location identity across non-overlapping views.박진우 (dztg5apj7m) extractionAK (4715169a40) reviewKiller Whale (322360f1c1) reviewq (76h6bfydm6) reviewB (s683577b42) review
CONCEPTS
- facing direction
The direction an observer is oriented toward at a given location.
박진우 (dztg5apj7m) extractionAK (4715169a40) reviewKiller Whale (322360f1c1) reviewq (76h6bfydm6) reviewB (s683577b42) review - functional magnetic resonance imaging
A brain-imaging method used to measure task-related neural activity in the scanned participants.
박진우 (dztg5apj7m) extractionAK (4715169a40) reviewKiller Whale (322360f1c1) reviewq (76h6bfydm6) reviewB (s683577b42) review - large-scale spatial structure
The broader organizational layout of an environment beyond a single viewpoint or local scene.
박진우 (dztg5apj7m) extractionAK (4715169a40) reviewKiller Whale (322360f1c1) reviewq (76h6bfydm6) reviewB (s683577b42) review - left presubiculum
A left-hemisphere medial temporal lobe region included among the brain areas examined in the study.
박진우 (dztg5apj7m) extractionAK (4715169a40) reviewKiller Whale (322360f1c1) reviewq (76h6bfydm6) reviewB (s683577b42) review - location identity
The identity of a place independent of the specific view or sensory input used to observe it.
박진우 (dztg5apj7m) extractionAK (4715169a40) reviewKiller Whale (322360f1c1) reviewq (76h6bfydm6) reviewB (s683577b42) review - multivoxel pattern analysis
An analysis approach that examines spatial patterns of fMRI signal across multiple voxels.
박진우 (dztg5apj7m) extractionAK (4715169a40) reviewKiller Whale (322360f1c1) reviewq (76h6bfydm6) reviewB (s683577b42) review - navigation
Guided movement through an environment using internal spatial representations.
박진우 (dztg5apj7m) extractionAK (4715169a40) reviewKiller Whale (322360f1c1) reviewq (76h6bfydm6) reviewB (s683577b42) review - parietal-occipital sulcus
A sulcal region in the parietal-occipital cortex that was tested for spatial representations.
박진우 (dztg5apj7m) extractionAK (4715169a40) reviewKiller Whale (322360f1c1) reviewq (76h6bfydm6) reviewB (s683577b42) review - retrosplenial complex
A medial parietal brain region involved in the anatomical set of areas analyzed for spatial coding.
박진우 (dztg5apj7m) extractionAK (4715169a40) reviewKiller Whale (322360f1c1) reviewq (76h6bfydm6) reviewB (s683577b42) review - right presubiculum
A right-hemisphere medial temporal lobe region examined for direction-related representations.
박진우 (dztg5apj7m) extractionAK (4715169a40) reviewKiller Whale (322360f1c1) reviewq (76h6bfydm6) reviewB (s683577b42) review
REFERENCES
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