The Experts below are selected from a list of 360 Experts worldwide ranked by ideXlab platform
Pascal Belin - One of the best experts on this subject based on the ideXlab platform.
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automatic domain general processing of sound source identity in the left posterior Middle Frontal Gyrus
Cortex, 2014Co-Authors: Bruno L Giordano, Cyril Pernet, Ian Charest, Guylaine Belizaire, Robert J Zatorre, Pascal BelinAbstract:Identifying sound sources is fundamental to developing a stable representation of the environment in the face of variable auditory information. The cortical processes underlying this ability have received little attention. In two fMRI experiments, we investigated passive adaptation to (Exp. 1) and explicit discrimination of (Exp. 2) source identities for different categories of auditory objects (voices, musical instruments, environmental sounds). All cortical effects of source identity were independent of high-level category information, and were accounted for by sound-to-sound differences in low-level structure (e.g., loudness). A conjunction analysis revealed that the left posterior Middle Frontal Gyrus (pMFG) adapted to identity repetitions during both passive listening and active discrimination tasks. These results indicate that the comparison of sound source identities in a stream of auditory stimulation recruits the pMFG in a domain-general way, i.e., independent of the sound category, based on information contained in the low-level acoustical structure. pMFG recruitment during both passive listening and explicit identity comparison tasks also suggests its automatic engagement in sound source identity processing.
Bruce Fischl - One of the best experts on this subject based on the ideXlab platform.
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gray matter volume reduction in rostral Middle Frontal Gyrus in patients with chronic schizophrenia
Schizophrenia Research, 2010Co-Authors: Zora Kikinis, L H Bobrow, Paula E. Pelavin, James H Fallon, Charlie A Davidson, Paul G Nestor, Margaret A Niznikiewicz, Bruce FischlAbstract:Abstract The dorsolateral preFrontal cortex (DLPFC) is a brain region that has figured prominently in studies of schizophrenia and working memory, yet the exact neuroanatomical localization of this brain region remains to be defined. DLPFC primarily involves the superior Frontal Gyrus and Middle Frontal Gyrus (MFG). The latter, however is not a single neuroanatomical entity but instead is comprised of rostral (anterior, Middle, and posterior) and caudal regions. In this study we used structural MRI to develop a method for parcellating MFG into its component parts. We focused on this region of DLPFC because it includes BA46, a region involved in working memory. We evaluated volume differences in MFG in 20 patients with chronic schizophrenia and 20 healthy controls. Mid-rostral MFG (MR-MFG) was delineated within the rostral MFG using anterior and posterior neuroanatomical landmarks derived from cytoarchitectonic definitions of BA46. Gray matter volumes of MR-MFG were then compared between groups, and a significant reduction in gray matter volume was observed ( p
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gray matter volume reduction in rostral Middle Frontal Gyrus in patients with chronic schizophrenia
Schizophrenia Research, 2010Co-Authors: Zora Kikinis, L H Bobrow, Paula E. Pelavin, James H Fallon, Charlie A Davidson, Paul G Nestor, Margaret A Niznikiewicz, Bruce FischlAbstract:The dorsolateral preFrontal cortex (DLPFC) is a brain region that has figured prominently in studies of schizophrenia and working memory, yet the exact neuroanatomical localization of this brain region remains to be defined. DLPFC primarily involves the superior Frontal Gyrus and Middle Frontal Gyrus (MFG). The latter, however is not a single neuroanatomical entity but instead is comprised of rostral (anterior, Middle, and posterior) and caudal regions. In this study we used structural MRI to develop a method for parcellating MFG into its component parts. We focused on this region of DLPFC because it includes BA46, a region involved in working memory. We evaluated volume differences in MFG in 20 patients with chronic schizophrenia and 20 healthy controls. Mid-rostral MFG (MR-MFG) was delineated within the rostral MFG using anterior and posterior neuroanatomical landmarks derived from cytoarchitectonic definitions of BA46. Gray matter volumes of MR-MFG were then compared between groups, and a significant reduction in gray matter volume was observed (p<0.008), but not in other areas of MFG (i.e., anterior or posterior rostral MFG, or caudal regions of MFG). Our results demonstrate that volumetric alterations in MFG gray matter are localized exclusively to MR-MFG. 3D reconstructions of the cortical surface made it possible to follow MFG into its anterior part, where other approaches have failed. This method of parcellation offers a more precise way of measuring MR-MFG that will likely be important in further documentation of DLPFC anomalies in schizophrenia.
Yong Zheng - One of the best experts on this subject based on the ideXlab platform.
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hostile attribution bias mediates the relationship between structural variations in the left Middle Frontal Gyrus and trait angry rumination
Frontiers in Psychology, 2018Co-Authors: Yueyue Wang, Mingyue Xiao, Yufang Zhao, Xu Chen, Hao Zhang, Qin Zhang, Yong ZhengAbstract:Abstract: Angry rumination is a common mental phenomenon which may lead to negative social behaviors such as aggression. Although numerous neuroimaging studies have focused on brain area activation during angry rumination, to our knowledge no study has examined the neuroanatomical and cognitive mechanisms of this process. In this study, we conducted a voxel-based morphometry analysis, using a region of interest analysis to identify the structural and cognitive mechanisms underlying individual differences in trait angry rumination (as measured by the Angry Rumination Scale) in a sample of 82 undergraduate students. We found that angry rumination was positively correlated with grey matter density in the left Middle Frontal Gyrus, which is implicated in inhibition control, working memory, and emotional regulation. The mediation analysis further revealed that hostile attribution bias (as measured by the Social Information Processing–Attribution Bias Questionnaire) acted as a cognitive mechanism underlying the positive association between the left Middle Frontal Gyrus density and trait angry rumination. These findings suggest that hostile attribution bias may contribute to trait angry rumination, while the left Middle Frontal Gyrus may play an important role in the development of hostile attribution bias and trait angry rumination. The study reveals the brain mechanisms of trait angry rumination and plays a role in revealing the cognitive mechanisms of the development of trait angry rumination.
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hostile attribution bias mediates the relationship between structural variations in the left Middle Frontal Gyrus and trait angry rumination
Frontiers in Psychology, 2018Co-Authors: Yueyue Wang, Mingyue Xiao, Yufang Zhao, Yong Zheng, Xu Chen, Hao Zhang, Qin Zhang, Wenfeng Zhu, Ling Xiang XiaAbstract:Angry rumination is a common mental phenomenon which may lead to negative social behaviors such as aggression. Although numerous neuroimaging studies have focused on brain area activation during angry rumination, to our knowledge no study has examined the neuroanatomical and cognitive mechanisms of this process. In this study, we conducted a voxel-based morphometry analysis, using a region of interest analysis to identify the structural and cognitive mechanisms underlying individual differences in trait angry rumination (as measured by the Angry Rumination Scale) in a sample of 82 undergraduate students. We found that angry rumination was positively correlated with gray matter density in the left Middle Frontal Gyrus (left-MFG), which is implicated in inhibition control, working memory, and emotional regulation. The mediation analysis further revealed that hostile attribution bias (as measured by the Social Information Processing-Attribution Bias Questionnaire) acted as a cognitive mechanism underlying the positive association between the left-MFG gray matter density and trait angry rumination. These findings suggest that hostile attribution bias may contribute to trait angry rumination, while the left-MFG may play an important role in the development of hostile attribution bias and trait angry rumination. The study reveals the brain mechanisms of trait angry rumination and plays a role in revealing the cognitive mechanisms of the development of trait angry rumination.
Yueyue Wang - One of the best experts on this subject based on the ideXlab platform.
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hostile attribution bias mediates the relationship between structural variations in the left Middle Frontal Gyrus and trait angry rumination
Frontiers in Psychology, 2018Co-Authors: Yueyue Wang, Mingyue Xiao, Yufang Zhao, Xu Chen, Hao Zhang, Qin Zhang, Yong ZhengAbstract:Abstract: Angry rumination is a common mental phenomenon which may lead to negative social behaviors such as aggression. Although numerous neuroimaging studies have focused on brain area activation during angry rumination, to our knowledge no study has examined the neuroanatomical and cognitive mechanisms of this process. In this study, we conducted a voxel-based morphometry analysis, using a region of interest analysis to identify the structural and cognitive mechanisms underlying individual differences in trait angry rumination (as measured by the Angry Rumination Scale) in a sample of 82 undergraduate students. We found that angry rumination was positively correlated with grey matter density in the left Middle Frontal Gyrus, which is implicated in inhibition control, working memory, and emotional regulation. The mediation analysis further revealed that hostile attribution bias (as measured by the Social Information Processing–Attribution Bias Questionnaire) acted as a cognitive mechanism underlying the positive association between the left Middle Frontal Gyrus density and trait angry rumination. These findings suggest that hostile attribution bias may contribute to trait angry rumination, while the left Middle Frontal Gyrus may play an important role in the development of hostile attribution bias and trait angry rumination. The study reveals the brain mechanisms of trait angry rumination and plays a role in revealing the cognitive mechanisms of the development of trait angry rumination.
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hostile attribution bias mediates the relationship between structural variations in the left Middle Frontal Gyrus and trait angry rumination
Frontiers in Psychology, 2018Co-Authors: Yueyue Wang, Mingyue Xiao, Yufang Zhao, Yong Zheng, Xu Chen, Hao Zhang, Qin Zhang, Wenfeng Zhu, Ling Xiang XiaAbstract:Angry rumination is a common mental phenomenon which may lead to negative social behaviors such as aggression. Although numerous neuroimaging studies have focused on brain area activation during angry rumination, to our knowledge no study has examined the neuroanatomical and cognitive mechanisms of this process. In this study, we conducted a voxel-based morphometry analysis, using a region of interest analysis to identify the structural and cognitive mechanisms underlying individual differences in trait angry rumination (as measured by the Angry Rumination Scale) in a sample of 82 undergraduate students. We found that angry rumination was positively correlated with gray matter density in the left Middle Frontal Gyrus (left-MFG), which is implicated in inhibition control, working memory, and emotional regulation. The mediation analysis further revealed that hostile attribution bias (as measured by the Social Information Processing-Attribution Bias Questionnaire) acted as a cognitive mechanism underlying the positive association between the left-MFG gray matter density and trait angry rumination. These findings suggest that hostile attribution bias may contribute to trait angry rumination, while the left-MFG may play an important role in the development of hostile attribution bias and trait angry rumination. The study reveals the brain mechanisms of trait angry rumination and plays a role in revealing the cognitive mechanisms of the development of trait angry rumination.
Ling Xiang Xia - One of the best experts on this subject based on the ideXlab platform.
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hostile attribution bias mediates the relationship between structural variations in the left Middle Frontal Gyrus and trait angry rumination
Frontiers in Psychology, 2018Co-Authors: Yueyue Wang, Mingyue Xiao, Yufang Zhao, Yong Zheng, Xu Chen, Hao Zhang, Qin Zhang, Wenfeng Zhu, Ling Xiang XiaAbstract:Angry rumination is a common mental phenomenon which may lead to negative social behaviors such as aggression. Although numerous neuroimaging studies have focused on brain area activation during angry rumination, to our knowledge no study has examined the neuroanatomical and cognitive mechanisms of this process. In this study, we conducted a voxel-based morphometry analysis, using a region of interest analysis to identify the structural and cognitive mechanisms underlying individual differences in trait angry rumination (as measured by the Angry Rumination Scale) in a sample of 82 undergraduate students. We found that angry rumination was positively correlated with gray matter density in the left Middle Frontal Gyrus (left-MFG), which is implicated in inhibition control, working memory, and emotional regulation. The mediation analysis further revealed that hostile attribution bias (as measured by the Social Information Processing-Attribution Bias Questionnaire) acted as a cognitive mechanism underlying the positive association between the left-MFG gray matter density and trait angry rumination. These findings suggest that hostile attribution bias may contribute to trait angry rumination, while the left-MFG may play an important role in the development of hostile attribution bias and trait angry rumination. The study reveals the brain mechanisms of trait angry rumination and plays a role in revealing the cognitive mechanisms of the development of trait angry rumination.