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Dirk Scheele

4 papers in the library · 95 citations · publishing 2018-2020

Papers

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Impaired cognitive performance under psychosocial stress in cannabis-dependent men is associated with attenuated precuneus activity

Journal of Psychiatry and Neuroscience February 26, 2020 Weihua Zhao, Kaeli Zimmermann, Xinqi Zhou et al. 14 citations

Background: Deficient regulation of stress plays an important role in the escalation of substance use, addiction and relapse. Accumulating evidence suggests dysregulations in cognitive and reward-related processes and the underlying neural circuitry in cannabis dependence. However, despite the important regulatory role of the endocannabinoid system in the stress response, associations between...

Impaired cognitive performance under psycho-social stress in cannabis-dependent males is mediated by attenuated precuneus activity

bioRxiv (Cold Spring Harbor Laboratory) September 29, 2018 Weihua Zhao, Kaeli Zimmermann, Xinqi Zhou et al. 1 citation preprint

Abstract Background Deficient regulation of stress plays an important role in the escalation of substance use, addiction and relapse. Accumulating evidence suggests dysregulations in cognitive and reward-related processes and the underlying neural circuitry in cannabis dependence. However, despite the important regulatory role of the endocannabinoid system in the stress response, associations...

Shifted balance of dorsal versus ventral striatal communication with frontal reward and regulatory regions in cannabis‐dependent males

Human Brain Mapping September 12, 2018 Feng Zhou, Kaeli Zimmermann, Fei Xin et al. 80 citations

The transition from voluntary to addictive behavior is characterized by a loss of regulatory control in favor of reward driven behavior. Animal models indicate that this process is neurally underpinned by a shift in ventral-dorsal striatal control of behavior; however, this shift has not been directly examined in humans. The present resting state functional magnetic resonance imaging (fMRI)...

Altered Reward Processing in Abstinent Dependent Cannabis Users: Social Context Matters

Kaeli Zimmermann, Keith M. Kendrick, Dirk Scheele et al. preprint

ABSTRACT Public perception of cannabis as relatively harmless, alongside claimed medical benefits, have led to moves towards its legalization. Yet, long-term consequences of cannabis dependence, and whether they differ qualitatively from other drugs, are still poorly understood. A key feature of addictive drugs is that chronic use leads to adaptations in reward processing, blunting responsivity...