Mar 20, 2016

Canceled connections: Lesion-derived network mapping helps explain differences in performance on a complex decision-making task

Cortex; a Journal Devoted to the Study of the Nervous System and Behavior
Matthew J SuttererDaniel Tranel

Abstract

Studies of patients with brain damage have highlighted a broad neural network of limbic and prefrontal areas as important for adaptive decision-making. However, some patients with damage outside these regions have impaired decision-making behavior, and the behavioral impairments observed in these cases are often attributed to the general variability in behavior following brain damage, rather than a deficit in a specific brain-behavior relationship. A novel approach, lesion-derived network mapping, uses healthy subject resting-state functional connectivity (RSFC) data to infer the areas that would be connected with each patient's lesion area in healthy adults. Here, we used this approach to investigate whether there was a systematic pattern of connectivity associated with decision-making performance in patients with focal damage in areas not classically associated with decision-making. These patients were categorized a priori into "impaired" or "unimpaired" groups based on their performance on the Iowa Gambling Task (IGT). Lesion-derived network maps based on the impaired patients showed overlap in somatosensory, motor and insula cortices, to a greater extent than patients who showed unimpaired IGT performance. Akin to the class...Continue Reading

  • References56
  • Citations12

References

  • References56
  • Citations12

Citations

Mentioned in this Paper

Neuro-Oncological Ventral Antigen 2
Study
Brain Injuries
Mild Traumatic Brain Injury
Biological Neural Networks
Decision Making
Adrenal Cortex Diseases
Epoch
Classification
Prefrontal Cortex

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