Abstract
Constructing a rich and coherent visual experience involves maintaining visual information that is not perceptually available in the current view. Recent studies suggest that briefly thinking about a stimulus (refreshing) can modulate activity in category-specific visual areas. Here, we tested the nature of such perceptually refreshed representations in the parahippocampal place area (PPA) and retrosplenial cortex (RSC) using fMRI. We asked whether a refreshed representation is specific to a restricted view of a scene, or more view-invariant. Participants saw a panoramic scene and were asked to think back to (refresh) a part of the scene after it disappeared. In some trials, the refresh cue appeared twice on the same side (e.g., refresh left-refresh left), and other trials, the refresh cue appeared on different sides (e.g., refresh left-refresh right). A control condition presented halves of the scene twice on same sides (e.g., perceive left-perceive left) or different sides (e.g., perceive left-perceive right). When scenes were physically repeated, both the PPA and RSC showed greater activation for the different-side repetition than the same-side repetition, suggesting view-specific representations. When participants refreshed scenes, the PPA showed view-specific activity just as in the physical repeat conditions, whereas RSC showed an equal amount of activation for different- and same-side conditions. This finding suggests that in RSC, refreshed representations were not restricted to a specific view of a scene, but extended beyond the target half into the entire scene. Thus, RSC activity associated with refreshing may provide a mechanism for integrating multiple views in the mind.
| Original language | English |
|---|---|
| Pages (from-to) | 2813-2822 |
| Number of pages | 10 |
| Journal | Journal of Cognitive Neuroscience |
| Volume | 22 |
| Issue number | 12 |
| DOIs | |
| Publication status | Published - 2010 Dec 1 |
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All Science Journal Classification (ASJC) codes
- Cognitive Neuroscience
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Refreshing and integrating visual scenes in scene-selective cortex. / Park, Soojin; Chun, Marvin M.; Johnson, Marcia K.
In: Journal of Cognitive Neuroscience, Vol. 22, No. 12, 01.12.2010, p. 2813-2822.Research output: Contribution to journal › Article
TY - JOUR
T1 - Refreshing and integrating visual scenes in scene-selective cortex
AU - Park, Soojin
AU - Chun, Marvin M.
AU - Johnson, Marcia K.
PY - 2010/12/1
Y1 - 2010/12/1
N2 - Constructing a rich and coherent visual experience involves maintaining visual information that is not perceptually available in the current view. Recent studies suggest that briefly thinking about a stimulus (refreshing) can modulate activity in category-specific visual areas. Here, we tested the nature of such perceptually refreshed representations in the parahippocampal place area (PPA) and retrosplenial cortex (RSC) using fMRI. We asked whether a refreshed representation is specific to a restricted view of a scene, or more view-invariant. Participants saw a panoramic scene and were asked to think back to (refresh) a part of the scene after it disappeared. In some trials, the refresh cue appeared twice on the same side (e.g., refresh left-refresh left), and other trials, the refresh cue appeared on different sides (e.g., refresh left-refresh right). A control condition presented halves of the scene twice on same sides (e.g., perceive left-perceive left) or different sides (e.g., perceive left-perceive right). When scenes were physically repeated, both the PPA and RSC showed greater activation for the different-side repetition than the same-side repetition, suggesting view-specific representations. When participants refreshed scenes, the PPA showed view-specific activity just as in the physical repeat conditions, whereas RSC showed an equal amount of activation for different- and same-side conditions. This finding suggests that in RSC, refreshed representations were not restricted to a specific view of a scene, but extended beyond the target half into the entire scene. Thus, RSC activity associated with refreshing may provide a mechanism for integrating multiple views in the mind.
AB - Constructing a rich and coherent visual experience involves maintaining visual information that is not perceptually available in the current view. Recent studies suggest that briefly thinking about a stimulus (refreshing) can modulate activity in category-specific visual areas. Here, we tested the nature of such perceptually refreshed representations in the parahippocampal place area (PPA) and retrosplenial cortex (RSC) using fMRI. We asked whether a refreshed representation is specific to a restricted view of a scene, or more view-invariant. Participants saw a panoramic scene and were asked to think back to (refresh) a part of the scene after it disappeared. In some trials, the refresh cue appeared twice on the same side (e.g., refresh left-refresh left), and other trials, the refresh cue appeared on different sides (e.g., refresh left-refresh right). A control condition presented halves of the scene twice on same sides (e.g., perceive left-perceive left) or different sides (e.g., perceive left-perceive right). When scenes were physically repeated, both the PPA and RSC showed greater activation for the different-side repetition than the same-side repetition, suggesting view-specific representations. When participants refreshed scenes, the PPA showed view-specific activity just as in the physical repeat conditions, whereas RSC showed an equal amount of activation for different- and same-side conditions. This finding suggests that in RSC, refreshed representations were not restricted to a specific view of a scene, but extended beyond the target half into the entire scene. Thus, RSC activity associated with refreshing may provide a mechanism for integrating multiple views in the mind.
UR - http://www.scopus.com/inward/record.url?scp=78649455042&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=78649455042&partnerID=8YFLogxK
U2 - 10.1162/jocn.2009.21406
DO - 10.1162/jocn.2009.21406
M3 - Article
C2 - 19929756
AN - SCOPUS:78649455042
VL - 22
SP - 2813
EP - 2822
JO - Journal of Cognitive Neuroscience
JF - Journal of Cognitive Neuroscience
SN - 0898-929X
IS - 12
ER -