Sophie R DelDonno1, Aimee James Karstens1, Brian Cerny2, Leah R Kling2, Lisanne M Jenkins3, Jonathan P Stange2, Robin Nusslock4, Stewart A Shankman1, Scott A Langenecker5. 1. a Department of Psychology , University of Illinois at Chicago, Chicago, IL, USA , Cook County, Chicago, IL , USA. 2. b Department of Psychiatry , University of Illinois at Chicago, Chicago, IL, USA , Cook County , Chicago, IL , USA. 3. c Department of Psychiatry and Behavioral Sciences , Northwestern University , Cook County , Chicago, IL , USA. 4. d Department of Psychology , Northwestern University , Lake County , Evanston, IL , USA. 5. e Department of Psychiatry , University of Utah , Salt Lake County , Salt Lake City, UT , USA.
Abstract
INTRODUCTION: Neuropsychological tests are designed to assay brain function via performance measurements. Many tests corresponding to visual and motor cortex function have been validated. Tests probing reward circuitry, including the ventral striatum (VS), could benefit assessment of numerous neurological and psychiatric disorders in which reward or VS function is disturbed. The present study sought to examine convergent and divergent validity of our modified, titrated version of the Monetary Incentive Delay Task, such that it may in the future stand as a validated neuropsychological test for reward function. METHOD: Participants were 132 individuals with a history of mood disturbance (HMD) and 43 healthy comparisons, ages 18-30 years. In addition to a standard neuropsychological battery and symptom measures, participants completed a modified version of the Monetary Incentive Delay Task (T-MIDT) during functional magnetic resonance imaging (fMRI), which involved a multistage titration procedure to incrementally increase or decrease the response window time per each participant's psychomotor speed and optimize individual performance. RESULTS: Across groups after titration, performance on the T-MIDT diverged from measures of processing speed, attention, and spatial working memory, but not inhibitory control. Performance in the HMD group was differentially correlated with executive function measures before and after titration. The reward circuit (e.g., subcortical, insular, medial prefrontal) was activated during reward anticipation. CONCLUSION: The present findings provide preliminary evidence that the T-MIDT measures a construct distinct from many executive functions and that individualized titration of the task parameters is critical in parsing reward from executive function. The T-MIDT correlated with residual mood symptoms in individuals with remitted depression or bipolar disorder, implying that behavioral or brain activation group differences are only to be observed in the active state of illness.
INTRODUCTION: Neuropsychological tests are designed to assay brain function via performance measurements. Many tests corresponding to visual and motor cortex function have been validated. Tests probing reward circuitry, including the ventral striatum (VS), could benefit assessment of numerous neurological and psychiatric disorders in which reward or VS function is disturbed. The present study sought to examine convergent and divergent validity of our modified, titrated version of the Monetary Incentive Delay Task, such that it may in the future stand as a validated neuropsychological test for reward function. METHOD:Participants were 132 individuals with a history of mood disturbance (HMD) and 43 healthy comparisons, ages 18-30 years. In addition to a standard neuropsychological battery and symptom measures, participants completed a modified version of the Monetary Incentive Delay Task (T-MIDT) during functional magnetic resonance imaging (fMRI), which involved a multistage titration procedure to incrementally increase or decrease the response window time per each participant's psychomotor speed and optimize individual performance. RESULTS: Across groups after titration, performance on the T-MIDT diverged from measures of processing speed, attention, and spatial working memory, but not inhibitory control. Performance in the HMD group was differentially correlated with executive function measures before and after titration. The reward circuit (e.g., subcortical, insular, medial prefrontal) was activated during reward anticipation. CONCLUSION: The present findings provide preliminary evidence that the T-MIDT measures a construct distinct from many executive functions and that individualized titration of the task parameters is critical in parsing reward from executive function. The T-MIDT correlated with residual mood symptoms in individuals with remitted depression or bipolar disorder, implying that behavioral or brain activation group differences are only to be observed in the active state of illness.
Authors: H D Rosas; A K Liu; S Hersch; M Glessner; R J Ferrante; D H Salat; A van der Kouwe; B G Jenkins; A M Dale; B Fischl Journal: Neurology Date: 2002-03-12 Impact factor: 9.910
Authors: Scott A Langenecker; Mindy Westlund Schreiner; Leah R Thomas; Katie L Bessette; Sophia R DelDonno; Lisanne M Jenkins; Rebecca E Easter; Jonathan P Stange; Stephanie L Pocius; Alina Dillahunt; Tiffany M Love; K Luan Phan; Vincent Koppelmans; Martin Paulus; Martin A Lindquist; Brian Caffo; Brian J Mickey; Robert C Welsh Journal: Biol Psychiatry Cogn Neurosci Neuroimaging Date: 2021-07-13