Search Results - "Waltz, James"

The neural underpinnings of cognitive flexibility and their disruption in psychotic illness by Waltz, James A

“…Highlights • Different subgroups of patients show deficits in set-shifting vs. set-maintenance. • There is heterogeneity in the functioning of frontostriatal…”
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Towards a Unifying Cognitive, Neurophysiological, and Computational Neuroscience Account of Schizophrenia by Heinz, Andreas, Murray, Graham K, Schlagenhauf, Florian, Sterzer, Philipp, Grace, Anthony A, Waltz, James A

“…Psychotic experiences may be understood as altered information processing due to aberrant neural computations. A prominent example of such neural computations…”
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Probabilistic reversal learning impairments in schizophrenia: Further evidence of orbitofrontal dysfunction by Waltz, James A, Gold, James M

“…Abstract Impairments in feedback processing and reinforcement learning appear to be prominent aspects of schizophrenia (SZ), which may relate to symptoms of…”
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A Review of Reward Processing and Motivational Impairment in Schizophrenia by STRAUSS, Gregory P, WALTZ, James A, GOLD, James M

“…This article reviews and synthesizes research on reward processing in schizophrenia, which has begun to provide important insights into the cognitive and…”
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Effort Cost Computation in Schizophrenia: A Commentary on the Recent Literature by Gold, James M, Waltz, James A, Frank, Michael J

“…Abstract The cognitive and affective factors implicated in the motivational impairments seen in many people with schizophrenia remain poorly understood. Many…”
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Negative Symptoms of Schizophrenia Are Associated with Abnormal Effort-Cost Computations by Gold, James M, Strauss, Gregory P, Waltz, James A, Robinson, Benjamin M, Brown, Jamie K, Frank, Michael J

“…Background Decision-making studies show that response selection is influenced by the “effort cost” associated with response alternatives. These effort-cost…”
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Working memory contributions to reinforcement learning impairments in schizophrenia by Collins, Anne G E, Brown, Jaime K, Gold, James M, Waltz, James A, Frank, Michael J

“…Previous research has shown that patients with schizophrenia are impaired in reinforcement learning tasks. However, behavioral learning curves in such tasks…”
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The roles of reward, default, and executive control networks in set-shifting impairments in schizophrenia by Waltz, James A, Kasanova, Zuzana, Ross, Thomas J, Salmeron, Betty J, McMahon, Robert P, Gold, James M, Stein, Elliot A

“…Patients with schizophrenia (SZ) show deficits on tasks of rapid reinforcement learning, like probabilistic reversal learning (PRL), but the neural bases for…”
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Interactions Among Working Memory, Reinforcement Learning, and Effort in Value-Based Choice: A New Paradigm and Selective Deficits in Schizophrenia by Collins, Anne G.E., Albrecht, Matthew A., Waltz, James A., Gold, James M., Frank, Michael J.

“…When studying learning, researchers directly observe only the participants’ choices, which are often assumed to arise from a unitary learning process. However,…”
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Probabilistic Reversal Learning in Schizophrenia: Stability of Deficits and Potential Causal Mechanisms by Reddy, Lena Felice, Waltz, James A, Green, Michael F, Wynn, Jonathan K, Horan, William P

“…Although individuals with schizophrenia show impaired feedback-driven learning on probabilistic reversal learning (PRL) tasks, the specific factors that…”
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An integrated cluster‐wise significance measure for fMRI analysis by Ge, Yunjiang, Chen, Gang, Waltz, James A., Hong, Liyi Elliot, Kochunov, Peter, Chen, Shuo

“…Cluster‐wise inference is widely used in fMRI analysis. The cluster‐level statistic is often obtained by counting the number of intra‐cluster voxels which…”
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From Childhood Trauma to Delusions: It’s Complicated by Waltz, James A.

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Phenomenological and Cognitive Features Associated With Auditory Hallucinations in Clinical and Nonclinical Voice Hearers by Gold, James M, Corlett, Philip R, Erickson, Molly, Waltz, James A, August, Sharon, Dutterer, Jenna, Bansal, Sonia

“…Abstract Background and Hypotheses Auditory verbal hallucinations (AVH) are central features of schizophrenia (SZ). However, AVH also occur in a small…”
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All or nothing belief updating in patients with schizophrenia reduces precision and flexibility of beliefs by Nassar, Matthew R, Waltz, James A, Albrecht, Matthew A, Gold, James M, Frank, Michael J

“…Schizophrenia is characterized by abnormal perceptions and beliefs, but the computational mechanisms through which these abnormalities emerge remain unclear…”
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Selective Reinforcement Learning Deficits in Schizophrenia Support Predictions from Computational Models of Striatal-Cortical Dysfunction by Waltz, James A, Frank, Michael J, Robinson, Benjamin M, Gold, James M

“…Background Rewards and punishments may make distinct contributions to learning via separate striatal-cortical pathways. We investigated whether fronto-striatal…”
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Extracting brain disease‐related connectome subgraphs by adaptive dense subgraph discovery by Wu, Qiong, Huang, Xiaoqi, Culbreth, Adam J., Waltz, James A., Hong, L. Elliot, Chen, Shuo

“…Group‐level brain connectome analysis has attracted increasing interest in neuropsychiatric research with the goal of identifying connectomic subnetworks…”
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Synchronized delta oscillations correlate with the resting-state functional MRI signal by Lu, Hanbing, Zuo, Yantao, Gu, Hong, Waltz, James A, Zhan, Wang, Scholl, Clara A, Rea, William, Yang, Yihong, Stein, Elliot A

“…Synchronized low-frequency spontaneous fluctuations of the functional MRI (fMRI) signal have recently been applied to investigate large-scale neuronal networks…”
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Increased Sensitivity to Effort and Perception of Effort in People with Schizophrenia by Culbreth, Adam J, Chib, Vikram S, Riaz, Safa S, Manohar, Sanjay G, Husain, Masud, Waltz, James A, Gold, James M

“…Motivational deficits in schizophrenia are proposed to be attributable in part to abnormal effort-cost computations, calculations weighing the costs vs. the…”
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Cognitive effort avoidance and detection in people with schizophrenia by Gold, James M., Kool, Wouter, Botvinick, Matthew M., Hubzin, Leeka, August, Sharon, Waltz, James A.

“…Many people with schizophrenia exhibit avolition, a difficulty initiating and maintaining goal-directed behavior, considered to be a key negative symptom of…”
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Motivational Deficits in Schizophrenia and the Representation of Expected Value by Waltz, James A, Gold, James M

“…Motivational deficits (avolition and anhedonia) have historically been considered important negative symptoms of schizophrenia (SZ). Numerous studies have…”
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