October 2020
Volume 20, Issue 11
Open Access
Vision Sciences Society Annual Meeting Abstract  |   October 2020
Visual memory recall for personally familiar objects in medial parietal cortex
Author Affiliations
  • Alexis Kidder
    National Institutes of Mental Health
  • Edward H. Silson
    The University of Edinburgh
  • Chris I. Baker
    National Institutes of Mental Health
Journal of Vision October 2020, Vol.20, 143. doi:https://doi.org/10.1167/jov.20.11.143
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      Alexis Kidder, Edward H. Silson, Chris I. Baker; Visual memory recall for personally familiar objects in medial parietal cortex. Journal of Vision 2020;20(11):143. https://doi.org/10.1167/jov.20.11.143.

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      © ARVO (1962-2015); The Authors (2016-present)

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Human ventral temporal cortex (VTC) contains distinct category-selective regions that are selectively recruited during visual processing of faces and scenes. In prior work (Silson et al., 2019), we found distinct functional connectivity between these VTC regions and parts of medial parietal cortex (MPC) with corresponding differences in the magnitude of activation in MPC during visual recall of personally familiar people and places. In addition to face- and scene- selective regions, VTC also contains object-selective regions. To investigate if there is also a separate region in MPC engaged during recall of personally familiar objects we collected functional magnetic resonance imaging (fMRI) data while participants (N = 21) visually recalled from memory personally familiar people (e.g. mom), places (e.g. bedroom), or objects (e.g. laptop, cell phone, jacket). Stimuli were personalized to each participant, and they reported 12 names for each condition prior to the scan session. We specifically chose objects that were not strongly associated with a specific context (e.g. toothbrush) to avoid any contextual effects. Regions of interest (ROI) were defined across the MPC using independent resting-state data, based on functional connectivity with VTC. While the data replicated our previous finding of separate regions for memory recall of people and places, there was little activation in MPC during the recall of personally relevant objects and no distinct subdivision of the MPC that was more selective for the recall of objects then people or places. Thus, the functional organization of MPC is not a complete reflection of the visual category-selective organization of VTC.


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