The spatial scale of perceptual memory in ambiguous figure perception

Area of Science:

• Neuroscience
• Cognitive Psychology
• Vision Science

Background:

• Ambiguous visual stimuli demonstrate the brain's active role in constructing perception.
• Prior experience with ambiguous stimuli influences subsequent interpretations, suggesting a role for perceptual memory.

Purpose of the Study:

• To investigate the spatial extent and reference frame of perceptual memory for ambiguous visual stimuli.
• To understand how memory influences perception when visual input is ambiguous.

Main Methods:

• Participants viewed ambiguous visual stimuli and their initial perception was recorded.
• The spatial spread and reference frame of the resulting perceptual memory were then tested.

Main Results:

• Perceptual memory for ambiguous stimuli is not spatially confined to the initial viewing location.
• Memory effects spread to non-contiguous visual field regions, decreasing with distance.
• The spread of perceptual memory is retinotopically organized, tied to the retinal surface.

Conclusions:

• Perceptual memory for visual input is spatially distributed and retinotopically mapped.
• These findings suggest the neural basis of perceptual memory resides in sensory cortical areas.
• This spatially flexible perceptual memory contributes to stable visual perception in dynamic environments.