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Neural interaction between spatial domain and spatial reference frame in parietal-occipital junction.
J Cogn Neurosci. 2012 Nov; 24(11):2223-36.JC

Abstract

On the basis of double dissociations in clinical symptoms of patients with unilateral visuospatial neglect, neuropsychological research distinguishes between different spatial domains (near vs. far) and different spatial reference frames (egocentric vs. allocentric). In this fMRI study, we investigated the neural interaction between spatial domains and spatial reference frames by constructing a virtual three-dimensional world and asking participants to perform either allocentric or egocentric judgments on an object located in either near or far space. Our results suggest that the parietal-occipital junction (POJ) not only shows a preference for near-space processing but is also involved in the neural interaction between spatial domains and spatial reference frames. Two dissociable streams of visual processing exist in the human brain: a ventral perception-related stream and a dorsal action-related stream. Consistent with the perception-action model, both far-space processing and allocentric judgments draw upon the ventral stream whereas both near-space processing and egocentric judgments draw upon the dorsal stream. POJ showed higher neural activity during allocentric judgments (ventral) in near space (dorsal) and egocentric judgments (dorsal) in far space (ventral) as compared with egocentric judgments (dorsal) in near space (dorsal) and allocentric judgments (ventral) in far space (ventral). Because representations in the dorsal and ventral streams need to interact during allocentric judgments (ventral) in near space (dorsal) and egocentric judgments (dorsal) in far space (ventral), our results imply that POJ is involved in the neural interaction between the two streams. Further evidence for the suggested role of POJ as a neural interface between the dorsal and ventral streams is provided by functional connectivity analysis.

Authors+Show Affiliations

Research Center Jülich. qi.chen27@gmail.comNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info available

Pub Type(s)

Journal Article
Research Support, Non-U.S. Gov't

Language

eng

PubMed ID

22721375

Citation

Chen, Qi, et al. "Neural Interaction Between Spatial Domain and Spatial Reference Frame in Parietal-occipital Junction." Journal of Cognitive Neuroscience, vol. 24, no. 11, 2012, pp. 2223-36.
Chen Q, Weidner R, Weiss PH, et al. Neural interaction between spatial domain and spatial reference frame in parietal-occipital junction. J Cogn Neurosci. 2012;24(11):2223-36.
Chen, Q., Weidner, R., Weiss, P. H., Marshall, J. C., & Fink, G. R. (2012). Neural interaction between spatial domain and spatial reference frame in parietal-occipital junction. Journal of Cognitive Neuroscience, 24(11), 2223-36.
Chen Q, et al. Neural Interaction Between Spatial Domain and Spatial Reference Frame in Parietal-occipital Junction. J Cogn Neurosci. 2012;24(11):2223-36. PubMed PMID: 22721375.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Neural interaction between spatial domain and spatial reference frame in parietal-occipital junction. AU - Chen,Qi, AU - Weidner,Ralph, AU - Weiss,Peter H, AU - Marshall,John C, AU - Fink,Gereon R, Y1 - 2012/06/21/ PY - 2012/6/23/entrez PY - 2012/6/23/pubmed PY - 2013/7/16/medline SP - 2223 EP - 36 JF - Journal of cognitive neuroscience JO - J Cogn Neurosci VL - 24 IS - 11 N2 - On the basis of double dissociations in clinical symptoms of patients with unilateral visuospatial neglect, neuropsychological research distinguishes between different spatial domains (near vs. far) and different spatial reference frames (egocentric vs. allocentric). In this fMRI study, we investigated the neural interaction between spatial domains and spatial reference frames by constructing a virtual three-dimensional world and asking participants to perform either allocentric or egocentric judgments on an object located in either near or far space. Our results suggest that the parietal-occipital junction (POJ) not only shows a preference for near-space processing but is also involved in the neural interaction between spatial domains and spatial reference frames. Two dissociable streams of visual processing exist in the human brain: a ventral perception-related stream and a dorsal action-related stream. Consistent with the perception-action model, both far-space processing and allocentric judgments draw upon the ventral stream whereas both near-space processing and egocentric judgments draw upon the dorsal stream. POJ showed higher neural activity during allocentric judgments (ventral) in near space (dorsal) and egocentric judgments (dorsal) in far space (ventral) as compared with egocentric judgments (dorsal) in near space (dorsal) and allocentric judgments (ventral) in far space (ventral). Because representations in the dorsal and ventral streams need to interact during allocentric judgments (ventral) in near space (dorsal) and egocentric judgments (dorsal) in far space (ventral), our results imply that POJ is involved in the neural interaction between the two streams. Further evidence for the suggested role of POJ as a neural interface between the dorsal and ventral streams is provided by functional connectivity analysis. SN - 1530-8898 UR - https://www.unboundmedicine.com/medline/citation/22721375/Neural_interaction_between_spatial_domain_and_spatial_reference_frame_in_parietal_occipital_junction_ L2 - http://www.mitpressjournals.org/doi/full/10.1162/jocn_a_00260?url_ver=Z39.88-2003&rfr_id=ori:rid:crossref.org&rfr_dat=cr_pub=pubmed DB - PRIME DP - Unbound Medicine ER -