Beyond the Edges of a View: Boundary Extension in Human Scene-Selective Visual Cortex

Park, Soo‐Jin; Intraub, Helene; Yi, Do Joon; Widders, David; Chun, Marvin M.

doi:10.1016/j.neuron.2007.04.006

Cited by 106 publications

(111 citation statements)

References 44 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…The current study brings a question whether the scene construction schema activated by a limited view is purely spatial and how it depends on the content of the scene. While the existing neuroimaging research indicates that BE is supported by the scene-selective brain regions but not by those specific to object recognition (Park et al, 2007), the present results raise a question whether BE of cropped face images may be underpinned by brain areas involved in visual-object processing. Further research is needed to examine the cognitive mechanisms and neural underpinnings of BE during cropped face processing.…”

Section: Discussioncontrasting

confidence: 79%

Boundary Extension in Face Processing

Blazhenkova

2017

i-Perception

View full text Add to dashboard Cite

Boundary extension is a common false memory error, in which people confidently remember seeing a wider angle view of the scene than was viewed. Previous research found that boundary extension is scene-specific and did not examine this phenomenon in nonscenes. The present research explored boundary extension in cropped face images. Participants completed either a short-term or a long-term condition of the task. During the encoding, they observed photographs of faces, cropped either in a forehead or in a chin area, and subsequently performed face recognition through a forced-choice selection. The recognition options represented different degrees of boundary extension and boundary restriction errors. Eye-tracking and performance data were collected. The results demonstrated boundary extension in both memory conditions. Furthermore, previous literature reported the asymmetry in amounts of expansion at different sides of an image. The present work provides the evidence of asymmetry in boundary extension. In the short-term condition, boundary extension errors were more pronounced for forehead, than for chin face areas. Finally, this research examined the relationships between the measures of boundary extension, imagery, and emotion. The results suggest that individual differences in emotional ability and object, but not spatial, imagery could be associated with boundary extension in face processing.

show abstract

Section: Discussioncontrasting

confidence: 79%

Boundary Extension in Face Processing

Blazhenkova

2017

i-Perception

View full text Add to dashboard Cite

show abstract

“…This is because BE for a closer target causes it to be remembered as looking more like the wider angle test picture. This asymmetry was also observed in neural responses to dissimilar pictures in scene selective brain regions (Park et al, 2007). This signature pattern was tested in Experiment 2.…”

mentioning

confidence: 69%

Transsaccadic representation of layout: What is the time course of boundary extension?

Dickinson¹,

Intraub²

2008

Journal of Experimental Psychology: Human Perception and Perfor

Self Cite

View full text Add to dashboard Cite

How rapidly does boundary extension (BE) occur? Across experiments, trials included a 3-scene sequence (325 ms/picture), masked interval, and repetition of one scene. The repetition was the same view or differed (more close-up or more wide-angle). Observers rated the repetition as same, closer, or more wide-angle than the original view on a 5-point scale. Masked intervals were 100, 250, 625, or 1000 ms in Experiment 1, and 42, 100, or 250 ms in Experiments 2 and 3. BE occurred in all cases: identical views were rated as too "close-up", and distractor views elicited the rating asymmetry typical of BE (wider-angle distractors were rated as being more similar to the original than were closer-up distractors). Most important, BE was evident when only a 42-ms mask separated the original and test views. Experiments 1 and 3 included conditions eliciting a gaze shift prior to the rating test; this did not eliminate BE. Results show that BE is available soon enough and is robust enough to play an on-line role in view integration, perhaps supporting incorporation of views within a larger spatial framework.

show abstract

“…The pattern of activity in the hippocampus corresponded to the real-world distance between landmarks shown on successive trials. In addition, other neuroimaging studies associated medial temporal lobe activity with performance on a task of boundary extension or on a task of mental imagery for scenes (23,27,28). Given the large number of brain regions active in these tasks, it is difficult to know the role of any particular region.…”

Section: Discussionmentioning

confidence: 99%

Memory, scene construction, and the human hippocampus

Kim

Dede

Hopkins

et al. 2015

Proc. Natl. Acad. Sci. U.S.A.

View full text Add to dashboard Cite

We evaluated two different perspectives about the function of the human hippocampus-one that emphasizes the importance of memory and another that emphasizes the importance of spatial processing and scene construction. We gave tests of boundary extension, scene construction, and memory to patients with lesions limited to the hippocampus or large lesions of the medial temporal lobe. The patients were intact on all of the spatial tasks and impaired on all of the memory tasks. We discuss earlier studies that associated performance on these spatial tasks to hippocampal function. Our results demonstrate the importance of medial temporal lobe structures for memory and raise doubts about the idea that these structures have a prominent role in spatial cognition.T wo traditions of work have influenced discussion about the function of the hippocampus (1). One tradition is based on work with memory-impaired patients and the idea that the hippocampus is important for a particular kind of memory (2, 3). The other tradition is based on work with rodents and the idea that the hippocampus is critical for spatial mapping (4). Its possible role in spatial processing has been recently explored in humans as well (5), and it has been proposed that the human hippocampus is essential for the ability to construct spatially coherent scenes (6, 7).This view of hippocampal function has depended on evidence from two kinds of tasks: boundary extension and scene construction (6,8). Boundary extension refers to the tendency to reconstruct a scene such that it has a larger background than was actually presented (9). In the Mullally et al. (8) study, memoryimpaired patients exhibited boundary extension less strongly than controls. Scene construction refers to the ability to imagine and describe spatially coherent scenes. In two studies, memoryimpaired patients made few references to space when visualizing and describing imagined scenes (6,8).It is unclear how to reconcile such findings with the view that the hippocampus chiefly supports memory functions. In particular, the idea that the construction and visualization of scenes involves the hippocampus seems at odds with the historic distinction between short-term (working) memory and long-term memory and the related idea that short-term memory is independent of the hippocampus (10-12). According to this perspective, hippocampal damage should not impair performance on spatial tasks, so long as testing puts no burden on long-term memory. In an attempt to clarify these issues, we gave tests of boundary extension, scene construction, and memory to patients with well-characterized lesions limited to the hippocampus or large lesions of the medial temporal lobe.Results Experiment 1. Both controls and hippocampal patients exhibited boundary extension. That is, both groups drew the central objects such that they occupied less area than in the original photographs ( Fig. 1 controls = 61.9% of the original area, hippocampal patients = 62.5% of the original area, P < 0.01). The extent of reduction was simil...

show abstract

Beyond the Edges of a View: Boundary Extension in Human Scene-Selective Visual Cortex

Cited by 106 publications

References 44 publications

Boundary Extension in Face Processing

Boundary Extension in Face Processing

Transsaccadic representation of layout: What is the time course of boundary extension?

Memory, scene construction, and the human hippocampus

Contact Info

Product

Resources

About