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Related Concept Videos

Visual Agnosia01:12

Visual Agnosia

981
Visual agnosia is a condition characterized by the inability to recognize visually presented objects despite having normal vision. For instance, a person with visual agnosia can describe the shape and color of an object but cannot identify or name it. This impairment does not affect their visual field, acuity, color vision, brightness discrimination, language, or memory. An example of this condition in a social setting is someone at a dinner party asking for "that silver thing with a round...
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Related Experiment Video

Updated: Jan 17, 2026

Brain Imaging Investigation of the Neural Correlates of Emotional Autobiographical Recollection
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Brain substrates of visual scene memory: a lesion-behavior mapping study.

Shir Ben-Zvi Feldman1,2, Nachum Soroker1,3, Daniel A Levy2,4

  • 1Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel.

Frontiers in Human Neuroscience
|September 17, 2025
PubMed
Summary
This summary is machine-generated.

Stroke patients with right hemisphere damage showed significant deficits in visual scene memory, impacting recall of identity, location, and action. Lesion mapping revealed distinct brain networks in the left and right hemispheres supporting different aspects of visual memory.

Keywords:
Wechsler Memory Scalelesionrecallstrokevisual-scene memory

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Area of Science:

  • Neuroscience
  • Cognitive Psychology
  • Neurology

Background:

  • Visual-scene memory involves ventral and dorsal visual streams, medial temporal cortex, and frontal, temporal, and parietal regions.
  • The precise roles of these regions in memorizing different visual elements are debated.
  • Neuroimaging suggests distinct network components for perception and memory of visual information.

Purpose of the Study:

  • To investigate the impact of stroke lesion topography on the recall of identity, location, and action within visual scenes.
  • To assess memory deficits in stroke patients using the WMS-III Family Pictures subtest.

Main Methods:

  • Ninety-three first-event stroke patients (RHD and LHD) performed the Family Pictures task.
  • Voxel-based lesion-symptom mapping (VLSM) identified brain lesions associated with memory deficits for scene elements.
  • Behavioral analysis compared patient performance to healthy controls.

Main Results:

  • Right hemisphere damage (RHD) patients exhibited significant impairments in identity, location, and action memory compared to controls.
  • Memory recall was lower in delayed compared to immediate testing.
  • A hierarchy of memory scores was observed: identity > location > action.
  • VLSM revealed distinct lesion patterns in the right hemisphere (temporal, parietal) and left hemisphere (temporo-occipital, MTL).

Conclusions:

  • Visual scene memory relies on a bi-hemispheric network, with left hemisphere dominance in temporo-occipital/MTL structures and right hemisphere dominance in temporo-parietal regions.
  • Left hemisphere networks were generally non-specific, while right hemisphere networks showed greater involvement in specific scene element memory.