Dissociating the neural mechanisms of distance and spatial reference frames

Abstract

(2015) 'Dissociating the neural mechanisms of distance and spatial reference frames. ', Neuropsychologia., Further information on publisher's website:https://doi.org/10.1016/j.neuropsychologia. 2014.12.019 Publisher's copyright statement: NOTICE: this is the author's version of a work that was accepted for publication in Neuropsychologia. Changes resulting from the publishing process, such as peer review, editing, corrections, structural formatting, and other quality control mechanisms may not be re ected in this document. Changes may have been made to this work since it was submitted for publication. A de nitive version was subsequently published in Neuropsychologia, 74, July 2015, 10.1016/j.neuropsychologia.2014.12.019. Additional information:Use policyThe full-text may be used and/or reproduced, and given to third parties in any format or medium, without prior permission or charge, for personal research or study, educational, or not-for-pro t purposes provided that:• a full bibliographic reference is made to the original source • a link is made to the metadata record in DRO • the full-text is not changed in any way The full-text must not be sold in any format or medium without the formal permission of the copyright holders.Please consult the full DRO policy for further details. show that rFEF is critical in the processing of each search at each distance whereas, contrary to previous detection results, TMS over rVO did not affect performance for any condition. TMS over rPPC revealed that specialised egocentric processing in the parietal cortex does not generalise to far space, providing evidence of a separation of the reference frame/distance conflation in the literature.

The thickness of the ventral medial prefrontal cortex predicts the prior-entry effect for allocentric representation in near space

“…Nevertheless, studies on the interaction between spatial domains and reference frames have found that individuals show processing precedence for egocentric presentation and near-space processing 4 , 6 , 7 , 22 . For example, Chen and colleagues 4 found that participants preferred egocentric representation, with a faster response in egocentric tasks regardless of near or far space.…”

Aging effects on extrapersonal (far-space) attention: cancellation and line bisection performance from 179 healthy adults

“…Organized searches can be measured according to their consistency (maintaining the same search pattern), number of intersections (search path crossing over itself), and distances between targets (finding the next target close to the previous one; Ten Brink et al, 2016). Moreover, our visuospatial attention operates to find stimuli in peripersonal (within reach/near-space) and extrapersonal space (out of reach/far-space) and locate them using egocentric (location of objects relative to the body) and allocentric (relative to other objects) reference frames (Lane et al, 2015). The central role visual search plays in everyday life becomes apparent when observing deficits in visuospatial attention after brain injury or changes with healthy aging.…”