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Jiang H, Zhang X, Zhang Y, Yan H, Yu H, Tan HY, Zhang D, Yue W. Effects of parenting styles on adult personality traits, depressive trait, and brain structure. Asian J Psychiatr 2024; 93:103939. [PMID: 38350178 DOI: 10.1016/j.ajp.2024.103939] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/26/2023] [Revised: 12/15/2023] [Accepted: 01/31/2024] [Indexed: 02/15/2024]
Abstract
This study explored the complex triangular relationships between parenting styles, personality traits, and depressive trait in Chinese Han adults (N = 490; Mean age=24.25; 51.0% women), and examined the relationship between parenting styles and brain structure. The data indicated that depressive trait in adulthood were negatively correlated with a favorable parenting style (emotional warmth) and positively correlated with undesirable parenting styles (punishment, rejection, and overprotection/over-intervention). Additionally, depressive trait in adulthood were positively related to neuroticism and psychoticism, and negatively related to extraversion. Using a multiple parallel mediation analysis, we found that neuroticism could be worsened by undesirable parenting styles and ameliorated by favorable parenting styles, and it further mediated the relationship between parenting styles and depressive trait across all models. Psychoticism played a similar role in two models: 1) parental punishment and depressive trait and 2) parental rejection and depressive trait. Extraversion played a mediating role between the father's overprotection and depressive trait. Subgroup analysis showed that different mediating pathways existed between different sexes. In terms of brain structure, we found that gray matter volume of the right inferior frontal gyrus was negatively related to overprotection by the father and positively related to psychoticism. Our findings highlight the importance of parenting style on personality traits, depressive trait, and brain structure over the long term.
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Affiliation(s)
- Haihua Jiang
- School of Nursing, Peking University, 100191, China; Peking University Sixth Hospital, Peking University Institute of Mental Health, 100191, China; NHC Key Laboratory of Mental Health (Peking University), National Clinical Research Center for Mental Disorders (Peking University Sixth Hospital), 100191, China
| | - Xiao Zhang
- Peking University Sixth Hospital, Peking University Institute of Mental Health, 100191, China; NHC Key Laboratory of Mental Health (Peking University), National Clinical Research Center for Mental Disorders (Peking University Sixth Hospital), 100191, China.
| | - Yuyanan Zhang
- Peking University Sixth Hospital, Peking University Institute of Mental Health, 100191, China; NHC Key Laboratory of Mental Health (Peking University), National Clinical Research Center for Mental Disorders (Peking University Sixth Hospital), 100191, China
| | - Hao Yan
- Peking University Sixth Hospital, Peking University Institute of Mental Health, 100191, China; NHC Key Laboratory of Mental Health (Peking University), National Clinical Research Center for Mental Disorders (Peking University Sixth Hospital), 100191, China
| | - Hao Yu
- Department of Psychiatry, Jining Medical University, 272067 Jining, Shandong, China
| | - Hao Yang Tan
- Lieber Institute for Brain Development, Baltimore, MD 21205, USA; Department of Psychiatry and Behavioral Sciences, Johns Hopkins University School of Medicine, Baltimore, MD 21205, USA
| | - Dai Zhang
- Peking University Sixth Hospital, Peking University Institute of Mental Health, 100191, China; NHC Key Laboratory of Mental Health (Peking University), National Clinical Research Center for Mental Disorders (Peking University Sixth Hospital), 100191, China; PKU-IDG/McGovern Institute for Brain Research, Peking University, Beijing 100871, China
| | - Weihua Yue
- Peking University Sixth Hospital, Peking University Institute of Mental Health, 100191, China; NHC Key Laboratory of Mental Health (Peking University), National Clinical Research Center for Mental Disorders (Peking University Sixth Hospital), 100191, China; PKU-IDG/McGovern Institute for Brain Research, Peking University, Beijing 100871, China.
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Meng Q, Zhu Y, Yuan Y, Liu J, Ye L, Kong W, Yan C, Liang Z, Yang F, Wang K, Bu J. A novel approach to modulating response inhibition: Multi-channel beta transcranial alternating current stimulation. Asian J Psychiatr 2024; 91:103872. [PMID: 38159441 DOI: 10.1016/j.ajp.2023.103872] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/10/2023] [Revised: 12/11/2023] [Accepted: 12/13/2023] [Indexed: 01/03/2024]
Abstract
BACKGROUND Deficits in response inhibition are associated with numerous psychiatric disorders. Previous studies have revealed the crucial role of the right inferior frontal gyrus (rIFG), pre-supplementary motor area (preSMA), and beta activity in these brain regions in response inhibition. Multi-channel transcranial alternating current stimulation (tACS) has garnered significant attention for its ability to modulate neural oscillations in brain networks. In this study, we employed multi-channel tACS targeting rIFG-preSMA network to investigate its impact on response inhibition in healthy adults. METHODS In Experiment 1, 70 healthy participants were randomly assigned to receive 20 Hz in-phase, anti-phase, or sham stimulation over rIFG-preSMA network. Response inhibition was assessed using the stop-signal task during and after stimulation, and impulsiveness was measured via the Barratt Impulsiveness Scale. Additionally, 25 participants received stimulation at the left supraorbital area to account for potential effects of the "return" electrode. Experiment 2, consisting of 25 participants, was conducted to validate the primary findings of Experiment 1, including both in-phase and sham stimulation conditions, based on prior estimations derived from the results of Experiment 1. RESULTS In Experiment 1, we found that in-phase stimulation significantly improved response inhibition compared with sham stimulation, whereas anti-phase stimulation did not. These findings were consistently replicated in Experiment 2. We also conducted an exploratory analysis of the multi-channel tACS impact, revealing that its effects primarily emerged during the post-stimulation phase. Furthermore, individuals with higher baseline attentional impulsiveness showed greater improvements in the in-phase stimulation group. CONCLUSIONS These results demonstrate that in-phase beta-tACS over rIFG-preSMA network can effectively improve response inhibition in healthy adults and provides a new potential treatment for patients with deficits in response inhibition.
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Affiliation(s)
- Qiujian Meng
- School of Biomedical Engineering, Anhui Medical University, Hefei, China
| | - Ying Zhu
- School of Biomedical Engineering, Anhui Medical University, Hefei, China
| | - Ye Yuan
- School of Biomedical Engineering, Anhui Medical University, Hefei, China
| | - Jiafang Liu
- School of Biomedical Engineering, Anhui Medical University, Hefei, China
| | - Lin Ye
- Department of Psychology, Anhui University of Chinese Medicine, Hefei, China
| | - Weimin Kong
- People's Hospital of Lujiang County, Anhui Province, China
| | - Chenxi Yan
- School of Biomedical Engineering, Anhui Medical University, Hefei, China
| | - Zhen Liang
- School of Biomedical Engineering, Anhui Medical University, Hefei, China
| | - Fei Yang
- School of Biomedical Engineering, Anhui Medical University, Hefei, China
| | - Kai Wang
- School of Mental Health and Psychological Sciences, Anhui Medical University, Hefei, China
| | - Junjie Bu
- Research Center for Translational Medicine, the Second Affiliated Hospital of Anhui Medical University, Hefei, China.
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Upton S, Brown AA, Ithman M, Newman-Norlund R, Sahlem G, Prisciandaro JJ, McClure EA, Froeliger B. Effects of Hyperdirect Pathway Theta Burst Transcranial Magnetic Stimulation on Inhibitory Control, Craving, and Smoking in Adults With Nicotine Dependence: A Double-Blind, Randomized Crossover Trial. Biol Psychiatry Cogn Neurosci Neuroimaging 2023; 8:1156-1165. [PMID: 37567363 PMCID: PMC10840958 DOI: 10.1016/j.bpsc.2023.07.014] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/27/2023] [Revised: 07/27/2023] [Accepted: 07/28/2023] [Indexed: 08/13/2023]
Abstract
BACKGROUND Nicotine dependence is associated with dysregulated hyperdirect pathway (HDP)-mediated inhibitory control (IC). However, there are currently no evidence-based treatments that have been shown to target the HDP to improve IC and reduce cigarette cravings and smoking. METHODS Following a baseline nonstimulation control session, this study (N = 37; female: n = 17) used a double-blind, randomized crossover design to examine the behavioral and neural effects of intermittent theta burst stimulation (iTBS) and continuous TBS (cTBS) to the right inferior frontal gyrus (rIFG)-a key cortical node of the HDP. Associations between treatment effects were also explored. RESULTS At baseline, HDP IC task-state functional connectivity was positively associated with IC task performance, which confirmed the association between HDP circuit function and IC. Compared with iTBS, rIFG cTBS improved IC task performance. Compared with the baseline nonstimulation control session, both TBS conditions reduced cigarette craving and smoking; however, although craving and smoking were lower for cTBS, no differences were found between the two active conditions. In addition, although HDP IC task-state functional connectivity was greater following cTBS than iTBS, there was no significant difference between conditions. Finally, cTBS-induced improvement in IC task performance was associated with reduced craving, and cTBS-induced reduction in craving was associated with reduced smoking. CONCLUSIONS These findings warrant further investigation into the effects of rIFG cTBS for increasing IC and reducing craving and smoking among individuals with nicotine dependence. Future sham-controlled cTBS studies may help further elucidate the mechanisms by which rIFG cTBS mediates IC and smoking behavior.
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Affiliation(s)
- Spencer Upton
- Department of Psychological Sciences, University of Missouri, Columbia, Missouri
| | - Alexander A Brown
- Department of Psychological Sciences, University of Missouri, Columbia, Missouri
| | - Muaid Ithman
- Department of Psychiatry, University of Missouri, Columbia, Missouri
| | - Roger Newman-Norlund
- Department of Psychology, University of South Carolina, Columbia, South Carolina
| | - Greg Sahlem
- Department of Psychiatry, Stanford University Medical Center, Palo Alto, California
| | - Jim J Prisciandaro
- Department of Psychiatry, Medical University of South Carolina, Charleston, South Carolina
| | - Erin A McClure
- Department of Psychiatry, Medical University of South Carolina, Charleston, South Carolina
| | - Brett Froeliger
- Department of Psychological Sciences, University of Missouri, Columbia, Missouri; Department of Psychiatry, University of Missouri, Columbia, Missouri; Cognitive Neuroscience Systems Core Facility, University of Missouri, Columbia, Missouri.
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Gavazzi G, Giovannelli F, Noferini C, Cincotta M, Cavaliere C, Salvatore M, Mascalchi M, Viggiano MP. Subregional prefrontal cortex recruitment as a function of inhibitory demand: an fMRI metanalysis. Neurosci Biobehav Rev 2023; 152:105285. [PMID: 37327836 DOI: 10.1016/j.neubiorev.2023.105285] [Citation(s) in RCA: 8] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2022] [Revised: 05/26/2023] [Accepted: 06/11/2023] [Indexed: 06/18/2023]
Abstract
Convergent studies corroborated the idea that the right prefrontal cortex is the crucial brain region responsible for inhibiting our actions. However, which sub-regions of the right prefrontal cortex are involved is still a matter of debate. To map the inhibitory function of the sub-regions of the right prefrontal cortex, we performed Activation Likelihood Estimation (ALE) meta-analyses and meta-regressions (ES-SDM) of fMRI studies exploring inhibitory control. Sixty-eight studies (1684 subjects, 912 foci) were identified and divided in three groups depending on the incremental demand. Overall, our results showed that higher was the inhibitory demand based on the individual differences in performances, more the upper portion of the right prefrontal cortex was activated to achieve a successful inhibition. Conversely, a lower demand of the inhibitory function, was associated with the inferior portions of the right prefrontal cortex recruitment. Notably, in the latter case, we also observed activation of areas associated with working memory and responsible for cognitive strategies.
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Affiliation(s)
- Gioele Gavazzi
- Department of Neuroscience, Psychology, Drug Research, Child Health, University of Florence, Florence, Italy
| | - Fabio Giovannelli
- Department of Neuroscience, Psychology, Drug Research, Child Health, University of Florence, Florence, Italy
| | - Chiara Noferini
- Department of Neuroscience, Psychology, Drug Research, Child Health, University of Florence, Florence, Italy
| | - Massimo Cincotta
- Unit of Neurology of Florence, Central Tuscany Local Health Authority, Firenze, Italy
| | | | | | - Mario Mascalchi
- "Mario Serio" Department of Experimental and Clinical Biomedical Sciences, University of Florence, Italy; Division of Epidemiology, Institute for Study, Prevention and network in Oncology (ISPRO), Florence, Italy
| | - Maria Pia Viggiano
- Department of Neuroscience, Psychology, Drug Research, Child Health, University of Florence, Florence, Italy.
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Pfeifer P, Sebastian A, Buchholz HG, Kaller CP, Gründer G, Fehr C, Schreckenberger M, Tüscher O. Prefrontal and striatal dopamine D 2/D 3 receptors correlate with fMRI BOLD activation during stopping. Brain Imaging Behav 2021; 16:186-198. [PMID: 34403039 PMCID: PMC8825403 DOI: 10.1007/s11682-021-00491-y] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 06/27/2021] [Indexed: 11/02/2022]
Abstract
D2-like dopamine receptors in animals and humans have been shown to be linked to impulsive behaviors that are highly relevant for several psychiatric disorders. Here, we investigate the relationship between the fronto-striatal D2/D3 dopamine receptor availability and response inhibition in a selected population of healthy OPRM1 G-allele carriers. Twenty-two participants successively underwent blood-oxygen level dependent functional magnetic resonance imaging (fMRI) while performing a stop-signal task and a separate positron emission tomography (PET) scan. Striatal and extrastriatal D2/D3 dopamine receptor availability was measured using the radiotracer [18F]fallypride. Caudate D2/D3 dopamine receptor availability positively correlated with stopping-related fronto-striatal fMRI activation. In addition, right prefrontal D2/D3 dopamine receptor availability correlated positively with stopping-related striatal fMRI BOLD signal. Our study partially replicates previous findings on correlations between striatal D2/D3 dopamine receptor availability and response inhibition in a population selected for its genetic determination of dopamine response to alcohol and as a modulator of impulse control via the endogenous opioid system. We confirm the important role of D2/D3 dopamine receptor availability in the fronto-striatal neural circuit for response inhibition. Moreover, we extend previous findings suggesting that dopamine receptor availability in the right inferior frontal cortex, a crucial region of the stopping network, is also strongly associated with stopping-related striatal fMRI activity in healthy OPRM1 G-allele carriers.
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Affiliation(s)
- Philippe Pfeifer
- University Hospital of Psychiatry and Psychotherapy, University of Bern, Bern, Switzerland.
| | - Alexandra Sebastian
- Department of Psychiatry and Psychotherapy, University Medical Center of the Johannes Gutenberg University Mainz, Untere Zahlbacher Straße 8, 55131, Mainz, Germany.,Leibniz Institute for Resilience Research, Wallstraße 7, 55122, Mainz, Germany
| | - Hans Georg Buchholz
- Department of Nuclear Medicine, University Medical Center of the Johannes Gutenberg University Mainz, Langenbeckstraße 1, 55131, Mainz, Germany
| | - Christoph P Kaller
- Department of Neurology and Neuroscience, University Medical Centre Freiburg, Freiburg, Germany.,Freiburg Brain Imaging Centre, University Medical Centre Freiburg, Freiburg, Germany.,Brain Links-BrainTools Cluster of Excellence, University Medical Centre Freiburg, Freiburg, Germany
| | - Gerhard Gründer
- Department of Molecular Neuroimaging, Medical Faculty Mannheim, Central Institute of Mental Health, University of Heidelberg, Mannheim, Germany
| | - Christoph Fehr
- Department for Psychiatry und Psychotherapy, Vitos Clinic for Psychiatry und Psychotherapy Hadamar/Weilmünster, Mönchberg 8, 65589, Hadamar, Germany
| | - Mathias Schreckenberger
- Department of Nuclear Medicine, University Medical Center of the Johannes Gutenberg University Mainz, Langenbeckstraße 1, 55131, Mainz, Germany
| | - Oliver Tüscher
- Department of Psychiatry and Psychotherapy, University Medical Center of the Johannes Gutenberg University Mainz, Untere Zahlbacher Straße 8, 55131, Mainz, Germany.,Leibniz Institute for Resilience Research, Wallstraße 7, 55122, Mainz, Germany
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Breitling-Ziegler C, Zaehle T, Wellnhofer C, Dannhauer M, Tegelbeckers J, Baumann V, Flechtner HH, Krauel K. Effects of a five-day HD-tDCS application to the right IFG depend on current intensity: A study in children and adolescents with ADHD. Prog Brain Res 2021; 264:117-150. [PMID: 34167653 DOI: 10.1016/bs.pbr.2021.01.014] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
Impaired executive functions in ADHD are associated with hypoactivity of the right inferior frontal gyrus (IFG). This region was targeted via repetitive applications of anodal, high-definition transcranial direct current simulation (HD-tDCS) on five consecutive days in 33 ADHD patients (10-17years) and in a healthy control group (n=13, only sham). Patients received either sham (n=13) or verum tDCS with 0.5mA (n=9) or 0.25mA (n=11) depending on individual cutaneous sensitivity. During stimulation, participants performed a combined working memory and response inhibition paradigm (n-back/nogo). At baseline, post, and a 4-month follow up, electroencephalography was recorded during this task. Moreover, interference control (flanker task) and spatial working memory (spanboard task) were assessed to explore possible transfer effects. Omission errors and reaction time variability in all tasks served as measures of attention. In the 0.25mA group increased nogo commission errors indicated a detrimental tDCS effect on response inhibition. After the 5-day stimulation, attentional improvements in the 0.5mA group were indicated by reduced omission errors and reaction time variability. Variability improvements were still evident at follow up. In all groups, nogo P3 amplitudes were reduced post-stimulation, but in the 0.5mA group this reduction was smaller than in the 0.25mA group. Results of the current study suggest distinct effects of tDCS with different current intensities demonstrating the importance of a deeper understanding on the impact of stimulation parameters and repeated tDCS applications to develop effective tDCS-based therapy approaches in ADHD.
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Affiliation(s)
- Carolin Breitling-Ziegler
- Department of Child and Adolescent Psychiatry and Psychotherapy, Otto von Guericke University, Magdeburg, Germany.
| | - Tino Zaehle
- Department of Neurology, Otto von Guericke University, Magdeburg, Germany; Center for Behavioral Brain Sciences (CBBS), Otto von Guericke University, Magdeburg, Germany
| | - Christian Wellnhofer
- Department of Child and Adolescent Psychiatry and Psychotherapy, Otto von Guericke University, Magdeburg, Germany
| | - Moritz Dannhauer
- Scientific Computing and Imaging Institute, Center for Integrated Biomedical Computing, University of Utah, Salt Lake City, UT, United States
| | - Jana Tegelbeckers
- Department of Child and Adolescent Psychiatry and Psychotherapy, Otto von Guericke University, Magdeburg, Germany; Department of Neurology, Feinberg School of Medicine, Northwestern University, Chicago, IL, United States
| | - Valentin Baumann
- Department of Child and Adolescent Psychiatry and Psychotherapy, Otto von Guericke University, Magdeburg, Germany
| | - Hans-Henning Flechtner
- Department of Child and Adolescent Psychiatry and Psychotherapy, Otto von Guericke University, Magdeburg, Germany
| | - Kerstin Krauel
- Department of Child and Adolescent Psychiatry and Psychotherapy, Otto von Guericke University, Magdeburg, Germany; Center for Behavioral Brain Sciences (CBBS), Otto von Guericke University, Magdeburg, Germany
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Leite J, Gonçalves ÓF, Pereira P, Khadka N, Bikson M, Fregni F, Carvalho S. The differential effects of unihemispheric and bihemispheric tDCS over the inferior frontal gyrus on proactive control. Neurosci Res 2017; 130:39-46. [PMID: 28842243 DOI: 10.1016/j.neures.2017.08.005] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2017] [Revised: 08/14/2017] [Accepted: 08/18/2017] [Indexed: 01/19/2023]
Abstract
This study examined the effects of bihemispheric and unihemispheric transcranial Direct Current Stimulation (tDCS) over the inferior frontal gyrus (IFG) on proactive control. Sixteen participants were randomized to receive (i) bihemispheric tDCS, with a 35cm2 anodal electrode of the right IFG and a 35cm2 cathode electrode of left IFG or (ii) unihemispheric tDCS, with a 35cm2 anodal electrode of the right IFG and a 100cm2 electrode of the left IFG or (iii) sham tDCS, while performing a prepotent inhibition task. There were significant speed-accuracy tradeoff effects in terms of switch costs: unihemispheric tDCS significantly decreased the accuracy when compared to bihemispheric, and sham tDCS, while increased response time when comparing to bihemispheric and sham tDCS. The computational model showed a symmetrical field intensity for the bihemispheric tDCS montage, and an asymmetrical for the unihemispheric tDCS montage. This study confirms that unihemispheric tDCS over the rIFG has a significant impact on response inhibition. The lack of results of bihemispheric tDCS brings two important findings for this study: (i) left IFG seems to be also critically associated with inhibitory response control, and (ii) these results highlight the importance of considering the dual effects of tDCS when choosing the electrode montage.
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Affiliation(s)
- Jorge Leite
- Neuropsychophysiology Laboratory, CIPsi, School of Psychology (EPsi), University of Minho, Campus de Gualtar, 4710-057 Braga, Portugal; Univ Portucalense, Portucalense Institute for Human Development - INPP, Oporto, Portugal; Spaulding Neuromodulation Center, Department of Physical Medicine and Rehabilitation, Spaulding Rehabilitation Hospital and Massachusetts General Hospital, Harvard Medical School, Boston, MA, USA.
| | - Óscar F Gonçalves
- Neuropsychophysiology Laboratory, CIPsi, School of Psychology (EPsi), University of Minho, Campus de Gualtar, 4710-057 Braga, Portugal; Spaulding Neuromodulation Center, Department of Physical Medicine and Rehabilitation, Spaulding Rehabilitation Hospital and Massachusetts General Hospital, Harvard Medical School, Boston, MA, USA
| | - Patrícia Pereira
- Neuropsychophysiology Laboratory, CIPsi, School of Psychology (EPsi), University of Minho, Campus de Gualtar, 4710-057 Braga, Portugal
| | - Niranjan Khadka
- Department of Biomedical Engineering, The City College of New York of CUNY, New York, NY, 10031 USA
| | - Marom Bikson
- Department of Biomedical Engineering, The City College of New York of CUNY, New York, NY, 10031 USA
| | - Felipe Fregni
- Spaulding Neuromodulation Center, Department of Physical Medicine and Rehabilitation, Spaulding Rehabilitation Hospital and Massachusetts General Hospital, Harvard Medical School, Boston, MA, USA
| | - Sandra Carvalho
- Neuropsychophysiology Laboratory, CIPsi, School of Psychology (EPsi), University of Minho, Campus de Gualtar, 4710-057 Braga, Portugal; Spaulding Neuromodulation Center, Department of Physical Medicine and Rehabilitation, Spaulding Rehabilitation Hospital and Massachusetts General Hospital, Harvard Medical School, Boston, MA, USA
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Sheu YS, Courtney SM. A neural mechanism of cognitive control for resolving conflict between abstract task rules. Cortex 2016; 85:13-24. [PMID: 27771559 DOI: 10.1016/j.cortex.2016.09.018] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2015] [Revised: 04/19/2016] [Accepted: 09/21/2016] [Indexed: 10/20/2022]
Abstract
Conflict between multiple sensory stimuli or potential motor responses is thought to be resolved via bias signals from prefrontal cortex (PFC). However, population codes in the PFC also represent abstract information, such as task rules. How is conflict between active abstract representations resolved? We used functional neuroimaging to investigate the mechanism responsible for resolving conflict between abstract representations of task rules. Participants performed two different tasks based on a cue. We manipulated the degree of conflict at the task-rule level by training participants to associate the color and shape dimensions of the cue with either the same task rule (congruent cues) or different ones (incongruent cues). Phonological and semantic tasks were used in which performance depended on learned, abstract representations of information, rather than sensory features of the target stimulus or on any habituated stimulus-response associations. In addition, these tasks activate distinct regions that allowed us to measure magnitude of conflict between tasks. We found that incongruent cues were associated with increased activity in several cognitive control areas, including the inferior frontal gyrus, inferior parietal lobule, insula, and subcortical regions. Conflict between abstract representations appears to be resolved by rule-specific activity in the inferior frontal gyrus that is correlated with enhanced activity related to the relevant information. Furthermore, multi-voxel pattern analysis of the activity in the inferior frontal gyrus was shown to carry information about both the currently relevant rule (semantic/phonological) and the currently relevant cue context (color/shape). Similar to models of attentional selection of conflicting sensory or motor representations, the current findings indicate part of the frontal cortex provides a bias signal, representing task rules, that enhances task-relevant information. However, the frontal cortex can also be the target of these bias signals in order to enhance abstract representations that are independent of particular stimuli or motor responses.
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Affiliation(s)
- Yi-Shin Sheu
- Department of Psychological & Brain Sciences, Johns Hopkins University, Baltimore, MD, USA.
| | - Susan M Courtney
- Department of Psychological & Brain Sciences, Johns Hopkins University, Baltimore, MD, USA; F.M. Kirby Research Center for Functional Brain Imaging, The Kennedy Krieger Institute, Baltimore, MD, USA; Department of Neuroscience, Johns Hopkins University, Baltimore, MD, USA.
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Votinov M, Aso T, Koganemaru S, Fukuyama H, Mima T. Transcranial direct current stimulation changes human endowment effect. Neurosci Res 2013; 76:251-6. [PMID: 23751446 DOI: 10.1016/j.neures.2013.05.007] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2013] [Revised: 05/23/2013] [Accepted: 05/30/2013] [Indexed: 11/30/2022]
Abstract
To test whether the right inferior frontal gyrus (IFG) plays role in the endowment effect, we investigated the effects of transcranial direct current stimulation (tDCS) of the right IFG on the willingness to accept/willingness to pay (WTA/WTP) discrepancy. Twelve healthy subjects underwent anodal, cathodal and sham tDCS on separate days. Stimulation was applied over the right IFG for 20min at 2mA. Subjects participated in the pricing task where they evaluated the presented items under WTA and WTP framings during tDCS intervention. The results showed that the WTA/WTP ratio after anodal tDCS was significantly higher than that after cathodal one. In addition, we found that the reaction time during the cathodal tDCS condition was significantly longer compared to those during anodal or sham tDCS conditions. Our findings suggest the functional relevance of the right IFG for producing endowment effect.
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Affiliation(s)
- Mikhail Votinov
- Human Brain Research Center, Kyoto University Graduate School of Medicine, Kyoto 606-8507, Japan.
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