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Related Concept Videos

Prosopagnosia01:24

Prosopagnosia

Prosopagnosia, also known as face blindness, is the inability to recognize faces. In severe cases, individuals with prosopagnosia may not recognize close family members, including parents and spouses, by their faces. For instance, someone with prosopagnosia might walk past their child in a crowd, only realizing their mistake upon noticing their child's distinctive backpack or favorite jacket. Prosopagnosia specifically impairs facial recognition, while the recognition of other objects or...

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Related Experiment Video

Updated: May 15, 2026

Developing Neuroimaging Phenotypes of the Default Mode Network in PTSD: Integrating the Resting State, Working Memory, and Structural Connectivity
10:43

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Published on: July 1, 2014

Resting state functional connectivity reflects abnormal task-activated patterns in a developmental object agnosic.

Sharon Gilaie-Dotan1, Avital Hahamy-Dubossarsky, Yuval Nir

  • 1Institute of Cognitive Neuroscience, UCL, London, UK.

Neuroimage
|January 9, 2013
PubMed
Summary
This summary is machine-generated.

Resting-state functional connectivity can reveal abnormal brain activity patterns, even without specific tasks. This study shows resting-state scans mirrored task-related deactivations in visual areas, suggesting a new diagnostic tool for brain pathologies.

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Published on: March 21, 2019

Area of Science:

  • Neuroscience
  • Cognitive Neuroscience
  • Functional Neuroimaging

Background:

  • The healthy brain exhibits coherent, ultra-slow fluctuations in neural activity across regions, known as resting-state functional connectivity.
  • These resting-state patterns often mirror the organization of task-induced functional networks.
  • It remains unclear if resting-state patterns can reflect abnormal cortical activations seen in brain pathologies.

Purpose of the Study:

  • To investigate whether abnormal visual activation patterns observed during stimulation are also present in resting-state functional connectivity.
  • To assess the utility of resting-state functional connectivity in detecting task-related abnormalities without task performance.

Main Methods:

  • Examined a sighted young adult (LG) with developmental object agnosia and no structural abnormalities.
  • Analyzed resting-state functional connectivity data.
  • Compared resting-state findings with previously reported task-based visual stimulation data where LG's visual areas (V2, V3) showed paradoxical deactivation.

Main Results:

  • Resting-state functional connectivity analysis revealed a pattern of functional abnormality mirroring the task-induced deactivation.
  • A significant atypical decorrelation was observed between visual areas V2-V3 and the rest of the visual system during rest.
  • The abnormal pattern identified during resting-state was consistent with the abnormal activation pattern during visual stimulation.

Conclusions:

  • Resting-state functional connectivity can recapitulate task-related abnormalities in cortical activity.
  • This suggests resting-state functional connectivity is a valuable tool for detecting task-related abnormalities in brain pathologies.
  • Resting-state paradigms may complement task-specific methods, offering a non-task-dependent approach for diagnosing cortical dysfunction.