V
Vikram S. Chib
Researcher at Johns Hopkins University
Publications - 41
Citations - 1414
Vikram S. Chib is an academic researcher from Johns Hopkins University. The author has contributed to research in topics: Ventromedial prefrontal cortex & Functional magnetic resonance imaging. The author has an hindex of 15, co-authored 38 publications receiving 1223 citations. Previous affiliations of Vikram S. Chib include Northwestern University & Kennedy Krieger Institute.
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Evidence for a Common Representation of Decision Values for Dissimilar Goods in Human Ventromedial Prefrontal Cortex
TL;DR: Activity in a key brain region previously implicated in encoding goal-values: the ventromedial prefrontal cortex (vmPFC) was correlated with the subjects' value for each category of good, providing evidence that the brain encodes a “common currency” that allows for a shared valuation for different categories of goods.
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Neural Mechanisms Underlying Paradoxical Performance for Monetary Incentives Are Driven by Loss Aversion
TL;DR: This paper used fMRI with a novel incentivized skill task to examine the neural processes underlying behavioral responses to performance-based pay, and found that individuals' performance increased with increasing incentives; however, very high incentive levels led to the paradoxical consequence of worse performance.
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Noninvasive remote activation of the ventral midbrain by transcranial direct current stimulation of prefrontal cortex
TL;DR: Using transcranial direct current stimulation of the prefrontal cortex, this protocol was able to remotely activate the interconnected midbrain and cause increases in participants’ appraisals of facial attractiveness, suggesting that this tDCS protocol could provide a promising approach to modulate midbrain functions that are disrupted in neuropsychiatric disorders.
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Overlaying ultrasonographic images on direct vision.
George D. Stetten,Vikram S. Chib +1 more
TL;DR: A method is presented that merges the visual outer surface of a patient with a simultaneous ultrasonographic scan of the patient's interior, which could enable needles and scalpels to be manipulated with direct hand‐eye coordination under ultr Masonographic guidance.
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The separate neural control of hand movements and contact forces
TL;DR: Three tasks in which subjects maintained a specified contact force while their hand was moved by a robotic manipulandum found that behavior was captured by the summed actions of two independent control systems, consistent with the view that manipulation of objects is performed by independent brain control of hand motions and interaction forces.