1
|
Zhang Y, Yang T, He Y, Meng F, Zhang K, Jin X, Cui X, Luo X. Abnormal theta and alpha oscillations in children and adolescents with first-episode psychosis and clinical high-risk psychosis. BJPsych Open 2024; 10:e71. [PMID: 38515342 PMCID: PMC10988601 DOI: 10.1192/bjo.2024.32] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/07/2023] [Revised: 01/12/2024] [Accepted: 01/25/2024] [Indexed: 03/23/2024] Open
Abstract
BACKGROUND Cognitive control deficits are one of the main symptoms of psychosis. The basic neural oscillation patterns associated with cognitive control are already present in early adolescence. However, as previous studies have focused on adults with psychosis, it is unclear whether neurobiological impairments in cognitive control are present in children and adolescents with first-episode psychosis (FEP) or clinical high-risk (CHR) state for psychosis. AIMS To explore the deficits of electroencephalogram related to cognitive control tasks in children and adolescents with FEP and CHR. METHOD Electroencephalogram was recorded in untreated 48 patients with FEP, 24 patients with CHR and 42 healthy controls aged 10-17 years, while performing the visual oddball task. The N2 amplitude, theta and alpha oscillations were then analysed and compared between groups. RESULTS There was no significant group difference in N2 amplitude (P = 0.099). All groups showed increased theta and alpha oscillations relative to baseline before the stimulus in the frontal, central, left fronto-central and right fronto-central areas. These changes differed significantly between groups, with the FEP group showing significantly smaller theta (P < 0.001) and alpha (P < 0.01) oscillation than healthy controls. Theta and alpha oscillations in the CHR group did not differ significantly from the FEP group and healthy controls. CONCLUSIONS These results suggest that neural damage has already occurred in the early stage of psychosis, and that abnormal rhythmic activity of neurons may constitute the pathophysiological mechanism of cognitive dysfunction related to early-onset psychosis.
Collapse
Affiliation(s)
- Yaru Zhang
- Department of Psychiatry, National Clinical Research Center for Mental Disorders and National Center for Mental Disorders, The Second Xiangya Hospital of Central South University, China
| | - Tingyu Yang
- Department of Psychiatry, National Clinical Research Center for Mental Disorders and National Center for Mental Disorders, The Second Xiangya Hospital of Central South University, China
| | - Yuqiong He
- Department of Psychiatry, National Clinical Research Center for Mental Disorders and National Center for Mental Disorders, The Second Xiangya Hospital of Central South University, China
| | - Fanchao Meng
- National Clinical Research Center for Mental Disorders and Beijing Key Laboratory of Mental Disorders, Beijing Anding Hospital, Capital Medical University, China; and Advanced Innovation Center for Human Brain Protection, Capital Medical University, China
| | - Kun Zhang
- Department of Child and Adolescent Psychiatry, Suzhou Guangji Hospital, China; and Department of Child and Adolescent Psychiatry, Affiliated Guangji Hospital of Soochow University, China
| | - Xingyue Jin
- Department of Psychiatry, National Clinical Research Center for Mental Disorders and National Center for Mental Disorders, The Second Xiangya Hospital of Central South University, China
| | - Xilong Cui
- Department of Psychiatry, National Clinical Research Center for Mental Disorders and National Center for Mental Disorders, The Second Xiangya Hospital of Central South University, China
| | - Xuerong Luo
- Department of Psychiatry, National Clinical Research Center for Mental Disorders and National Center for Mental Disorders, The Second Xiangya Hospital of Central South University, China
| |
Collapse
|
2
|
Ibáñez-Molina A, Crespo Cobo Y, Soriano Peña MF, Iglesias-Parro S, Ruiz de Miras J. Mutual information of multiple rhythms in schizophrenia. Brain Struct Funct 2024; 229:285-295. [PMID: 38091050 PMCID: PMC10917874 DOI: 10.1007/s00429-023-02744-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2023] [Accepted: 11/28/2023] [Indexed: 03/07/2024]
Abstract
Interactions between different cortical rhythms, such as slow and fast oscillations, have been hypothesized to underlie many cognitive functions. In patients diagnosed with schizophrenia, there is some evidence indicating that the interplay between slow and fast oscillations might be impaired or disrupted. In this study, we investigated multiple oscillatory interactions in schizophrenia using a novel approach based on information theory. This method allowed us to investigate interactions from a new perspective, where two or more rhythm interactions could be analyzed at the same time. We calculated the mutual information of multiple rhythms (MIMR) for EEG segments registered in resting state. Following previous studies, we focused on rhythm interactions between theta, alpha, and gamma. The results showed that, in general, MIMR was higher in patients than in controls for alpha-gamma and theta-gamma couplings. This finding of an increased coupling between slow and fast rhythms in schizophrenia may indicate complex interactions in the Default Mode Network (DMN) related to hyperactivation of internally guided cognition.
Collapse
Affiliation(s)
| | - Yasmina Crespo Cobo
- Department of Psychology, University of Jaén, Jaén, Spain.
- Department of Psychology, St. Agustín University Hospital, Av. San Cristóbal, 2D, 23700, Linares, Jaén, Spain.
| | - Maria Felipa Soriano Peña
- Department of Psychology, St. Agustín University Hospital, Av. San Cristóbal, 2D, 23700, Linares, Jaén, Spain
| | | | | |
Collapse
|
3
|
An SJ, Choi S, Hwang JS, Park S, Jang M, Kim M, Kwon JS. Aberrant hyperfocusing in schizophrenia indicated by elevated theta phase-gamma amplitude coupling. Clin Neurophysiol 2024; 157:88-95. [PMID: 38064931 DOI: 10.1016/j.clinph.2023.11.012] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2023] [Revised: 10/27/2023] [Accepted: 11/16/2023] [Indexed: 01/13/2024]
Abstract
OBJECTIVE We aimed to investigate electroencephalographic (EEG) markers of aberrant hyperfocusing, a novel framework of impaired selective attention, in schizophrenia patients by using theta phase-gamma amplitude coupling (TGC). METHODS Fifty-four schizophrenia patients and 73 healthy controls (HCs) underwent EEG recording during an auditory oddball paradigm. For the standard and target conditions, TGC was calculated using the source signals from 25 brain regions of interest (ROIs) related to attention networks and sensory processing; TGC values were then compared across groups and conditions using two-way analysis of covariance. Correlations of altered TGC with performance on the Trail Making Test Parts A and B (TMT-A/B), were explored. RESULTS Compared to HCs, schizophrenia patients showed elevated TGC in the left inferior frontal gyrus (IFG) and superior temporal gyrus in the standard condition but not in the target condition. Correlation analyses revealed that the TGC in the left IFG was positively correlated with the TMT-A/B completion times. CONCLUSIONS Aberrant hyperfocusing, as reflected by elevated TGC in attention-related brain regions, was related to behavioral performance on the TMT-A/B in schizophrenia patients. SIGNIFICANCE This study suggests that TGC is a electrophysiological marker for aberrant hyperfocusing of attentional processes that may result in cognitive impairments in schizophrenia patients.
Collapse
Affiliation(s)
- Su-Jin An
- Department of Brain and Cognitive Sciences, Seoul National University College of Natural Sciences, Seoul, Republic of Korea
| | - Sunah Choi
- Department of Brain and Cognitive Sciences, Seoul National University College of Natural Sciences, Seoul, Republic of Korea
| | - Jun Seo Hwang
- Department of Brain and Cognitive Sciences, Seoul National University College of Natural Sciences, Seoul, Republic of Korea
| | - Sunghyun Park
- Department of Neuropsychiatry, Seoul National University Hospital, Seoul, Republic of Korea
| | - Moonyoung Jang
- Department of Neuropsychiatry, Seoul National University Hospital, Seoul, Republic of Korea; Department of Psychiatry, Seoul National University College of Medicine, Seoul, Republic of Korea
| | - Minah Kim
- Department of Neuropsychiatry, Seoul National University Hospital, Seoul, Republic of Korea; Department of Psychiatry, Seoul National University College of Medicine, Seoul, Republic of Korea.
| | - Jun Soo Kwon
- Department of Brain and Cognitive Sciences, Seoul National University College of Natural Sciences, Seoul, Republic of Korea; Department of Neuropsychiatry, Seoul National University Hospital, Seoul, Republic of Korea; Department of Psychiatry, Seoul National University College of Medicine, Seoul, Republic of Korea; Institute of Human Behavioral Medicine, SNU-MRC, Seoul, Republic of Korea
| |
Collapse
|
4
|
Cross-frequency coupling in psychiatric disorders: A systematic review. Neurosci Biobehav Rev 2022; 138:104690. [PMID: 35569580 DOI: 10.1016/j.neubiorev.2022.104690] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2021] [Revised: 05/02/2022] [Accepted: 05/08/2022] [Indexed: 11/21/2022]
Abstract
Cross-frequency coupling (CFC), an electrophysiologically derived measure of oscillatory coupling in the brain, is believed to play a critical role in neuronal computation, learning and communication. It has received much recent attention in the study of both health and disease. We searched for literature that studied CFC during resting state and task-related activities during electroencephalography and magnetoencephalography in psychiatric disorders. Thirty-eight studies were identified, which included attention-deficit hyperactivity disorder, Alzheimer's dementia, autism spectrum disorder, bipolar disorder, depression, obsessive compulsive disorder, social anxiety disorder and schizophrenia. The systematic review was registered with PROSPERO (ID#CRD42021224188). The current review indicates measurable differences exist between CFC in disease states vs. healthy controls. There was variance in CFC at different regions of the brain within the same psychiatric disorders, perhaps this could be explained by the mechanisms and functionality of CFC. There was heterogeneity in methodologies used, which may lead to spurious CFC analyses. Going forward, standardized methodologies need to be established and utilized in further research to understand the neuropathophysiology associated with psychiatric disorders.
Collapse
|
5
|
Abstract
Impaired cognition is common in many neuropsychiatric disorders and severely compromises quality of life. Synchronous electrophysiological rhythms represent a core mechanism for sculpting communication dynamics among large-scale brain networks that underpin cognition and its breakdown in neuropsychiatric disorders. Here, we review an emerging neuromodulation technology called transcranial alternating current stimulation that has shown remarkable early results in rapidly improving various domains of human cognition by modulating properties of rhythmic network synchronization. Future noninvasive neuromodulation research holds promise for potentially rescuing network activity patterns and improving cognition, setting groundwork for the development of drug-free, circuit-based therapeutics for people with cognitive brain disorders.
Collapse
Affiliation(s)
- Shrey Grover
- Department of Psychological & Brain Sciences, Boston University, Boston, Massachusetts 02215, USA; , ,
| | - John A Nguyen
- Department of Psychological & Brain Sciences, Boston University, Boston, Massachusetts 02215, USA; , ,
| | - Robert M G Reinhart
- Department of Psychological & Brain Sciences, Boston University, Boston, Massachusetts 02215, USA; , , .,Center for Systems Neuroscience, Boston University, Boston, Massachusetts 02215, USA.,Cognitive Neuroimaging Center, Boston University, Boston, Massachusetts 02215, USA.,Center for Research in Sensory Communication & Emerging Neural Technology, Boston University, Boston, Massachusetts 02215, USA
| |
Collapse
|
6
|
Abstract
Schizophrenia (Sz) is a chronic mental disorder characterized by disturbances in thought (such as delusions and confused thinking), perception (hearing voices), and behavior (lack of motivation). The lifetime prevalence of Sz is between 0.3% and 0.7%, with late adolescence and early adulthood, the peak period for the onset of psychotic symptoms. Causal factors in Sz include environmental and genetic factors and especially their interaction. About 50% of individuals with a diagnosis of Sz have lifelong impairment.
Collapse
|
7
|
Relationship between resting-state theta phase-gamma amplitude coupling and neurocognitive functioning in patients with first-episode psychosis. Schizophr Res 2020; 216:154-160. [PMID: 31883931 DOI: 10.1016/j.schres.2019.12.010] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/16/2019] [Revised: 11/28/2019] [Accepted: 12/17/2019] [Indexed: 01/10/2023]
Abstract
BACKGROUND Although cognitive dysfunction is a core element of schizophrenia, the neurobiological underpinnings of the pathophysiology are not yet sufficiently understood. Because the resting state is crucial for cognitive functioning and electroencephalography (EEG) can reflect instantaneous neural activity, we investigated theta phase-gamma amplitude coupling (TGC) of resting-state EEG and its relationship with cognitive function in patients with first-episode psychosis (FEP) to reveal the neural correlates of cognitive dysfunction. METHODS A total of 59 FEP patients and 50 healthy controls (HCs) underwent resting-state, eyes-closed EEG recordings and performed the Trail Making Test Part A (TMT-A) and Part B (TMT-B) and California Verbal Learning Test (CVLT). TGC from the source signal of the resting-state EEG in default mode network (DMN)-related brain regions was compared between groups. Correlation analyses were performed between TGC and cognitive function test performance in FEP patients. RESULTS Mean resting-state TGC was larger for the FEP patients than for the HCs. Patients with FEP showed increased TGC in the left posterior cingulate cortex, which was correlated with better performance on the TMT-A and TMT-B and on immediate and delayed recall in the CVLT. CONCLUSIONS These results suggest that patients with FEP show compensatory hyperactivation of resting-state TGC in DMN-related brain regions, which may be related to the reallocation of cognitive resources to prepare for successful cognitive execution. This study not only highlights the neural underpinnings of cognitive dysfunction in FEP patients but also provides useful background to support the development of treatments for cognitive dysfunction in schizophrenia.
Collapse
|
8
|
André N, Audiffren M, Baumeister RF. An Integrative Model of Effortful Control. Front Syst Neurosci 2019; 13:79. [PMID: 31920573 PMCID: PMC6933500 DOI: 10.3389/fnsys.2019.00079] [Citation(s) in RCA: 25] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2019] [Accepted: 12/06/2019] [Indexed: 11/21/2022] Open
Abstract
This article presents an integrative model of effortful control, a resource-limited top-down control mechanism involved in mental tasks and physical exercises. Based on recent findings in the fields of neuroscience, social psychology and cognitive psychology, this model posits the intrinsic costs related to a weakening of the connectivity of neural networks underpinning effortful control as the main cause of mental fatigue in long and high-demanding tasks. In this framework, effort reflects three different inter-related aspects of the same construct. First, effort is a mechanism comprising a limited number of interconnected processing units that integrate information regarding the task constraints and subject’s state. Second, effort is the main output of this mechanism, namely, the effort signal that modulates neuronal activity in brain regions involved in the current task to select pertinent information. Third, effort is a feeling that emerges in awareness during effortful tasks and reflects the costs associated with goal-directed behavior. Finally, the model opens new avenues for research investigating effortful control at the behavioral and neurophysiological levels.
Collapse
Affiliation(s)
- Nathalie André
- Research Centre on Cognition and Learning, UMR CNRS 7295, University of Poitiers, Poitiers, France
| | - Michel Audiffren
- Research Centre on Cognition and Learning, UMR CNRS 7295, University of Poitiers, Poitiers, France
| | - Roy F Baumeister
- School of Psychology, University of Queensland, Brisbane, QLD, Australia
| |
Collapse
|
9
|
Bartholomew ME, Heller W, Miller GA. Inhibitory control of emotional processing: Theoretical and empirical considerations. Int J Psychophysiol 2019; 163:5-10. [PMID: 30936042 DOI: 10.1016/j.ijpsycho.2019.03.015] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2018] [Revised: 02/19/2019] [Accepted: 03/28/2019] [Indexed: 11/24/2022]
Abstract
Although inhibitory control appears to support successful emotion regulation (ER; Joorman and Gotlib, 2010; McCabe et al., 2010), few emotion inhibition studies position themselves in the literature on ER, and even fewer ER studies reference the role of emotion inhibition. Perhaps contributing to this, the ER literature is frequently divided into implicit or "automatic" (which subsumes emotion inhibition) and explicit or "effortful" control (Braunstein et al., 2017; Gyurak et al., 2011). The present paper evaluates relationships among constructs of inhibitory control, emotion inhibition, and ER to assess neural evidence for and against distinctions between implicit and explicit ER. We argue that, whereas the distinction between implicit and explicit ER may appear organizationally or conceptually helpful, such categorical distinctions are not supported by available research and in fact contribute to imbalances in the research literature.
Collapse
Affiliation(s)
- Morgan E Bartholomew
- Department of Psychology, University of California Los Angeles, Los Angeles, CA, United States.
| | - Wendy Heller
- Department of Psychology, University of Illinois at Urbana-Champaign, Champaign, IL, United States
| | - Gregory A Miller
- Department of Psychology, University of California Los Angeles, Los Angeles, CA, United States; Department of Psychology, University of Illinois at Urbana-Champaign, Champaign, IL, United States; Department of Psychiatry and Biobehavioral Sciences, University of California Los Angeles, Los Angeles, CA, United States
| |
Collapse
|
10
|
Popov T, Kustermann T, Popova P, Miller GA, Rockstroh B. Oscillatory brain dynamics supporting impaired Stroop task performance in schizophrenia-spectrum disorder. Schizophr Res 2019; 204:146-154. [PMID: 30158065 DOI: 10.1016/j.schres.2018.08.026] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/13/2018] [Revised: 07/26/2018] [Accepted: 08/17/2018] [Indexed: 12/12/2022]
Abstract
The Stroop color-word interference task, prompting slower response to color-incongruent than to congruent items, is often used to study neural mechanisms of inhibitory control and dysfunction in schizophrenia-spectrum disorders. Inconsistent findings of an augmented Stroop effect limit identification of relevant dysfunctional mechanism(s) in schizophrenia. The present study sought to advance understanding of normal and impaired neural oscillatory dynamics by distinguishing interference detection and response preparation during the Stroop task in schizophrenia-spectrum disorders via analysis of behavioral performance and 4-7 Hz (theta) and 10-30 Hz (alpha/beta) EEG oscillations in 40 patients (SZ) and 27 healthy comparison participants (HC). SZ responded more slowly and showed less dorsal anterior cingulate (dACC) theta enhancement during INC trials, less enhancement of dACC-sensorimotor cortex connectivity (theta phase synchrony) during INC trials, more alpha/beta suppression though less enhancement of that suppression during INC trials, and slower post-response alpha/beta rebound than did HC. Reaction time distributions showed larger group and Stroop effects during the 25% of trials with the slowest responses. Poorer theta phase coherence in patients indicates impaired communication between regions associated with interference processing (dACC) and response preparation (sensorimotor cortex). Results suggest a failure cascade in which compromised behavioral Stroop effects are driven at least in part by dysfunctional interference processing (less theta power increase) prompting dysfunctional motor response preparation (less alpha/beta power suppression). Inconsistent Stroop effects in past studies of schizophrenia may result from differing task parameters sampling different degrees of Stroop task difficulty.
Collapse
Affiliation(s)
- Tzvetan Popov
- Department of Psychology, PO Box 905, University Konstanz, D-78457 Konstanz, Germany
| | - Thomas Kustermann
- Department of Psychology, PO Box 905, University Konstanz, D-78457 Konstanz, Germany; Laboratoire de Recherche en Neuroimagerie (LREN), Department of Clinical Neuroscience, Lausanne University and University Hospital, CH-1011 Lausanne, Switzerland
| | - Petia Popova
- Department of Psychology, PO Box 905, University Konstanz, D-78457 Konstanz, Germany
| | - Gregory A Miller
- Department of Psychology and Department of Psychiatry and Biobehavioral Sciences, UCLA, 1257D Franz Hall, Box 951563, Los Angeles, CA 90095-1563, USA
| | - Brigitte Rockstroh
- Department of Psychology, PO Box 905, University Konstanz, D-78457 Konstanz, Germany.
| |
Collapse
|
11
|
Popov T, Popova P, Harkotte M, Awiszus B, Rockstroh B, Miller GA. Cross-frequency interactions between frontal theta and posterior alpha control mechanisms foster working memory. Neuroimage 2018; 181:728-733. [PMID: 30075276 DOI: 10.1016/j.neuroimage.2018.07.067] [Citation(s) in RCA: 26] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2018] [Revised: 07/09/2018] [Accepted: 07/30/2018] [Indexed: 12/13/2022] Open
Abstract
Neural oscillatory activity in the theta (4-8 Hz) and alpha (8-14 Hz) bands has been associated with the implementation of executive function, with theta in midline frontal cortex and alpha in posterior parietal cortex related to working memory (WM) load. To identify how these spatially and spectrally distinct neural phenomena interact within a large-scale fronto-parietal network organized in service of WM, EEG was recorded while subjects performed an N-back WM task. Frontal theta power increase, paralleled by posterior alpha decrease, tracked participants' successful WM performance. These power fluctuations were inversely related both across and within trials and predicted reaction time, suggesting a functionally important communication channel within the fronto-parietal network. Granger causality analysis revealed directed parietal to frontal communication via alpha and frontal to parietal communication via theta. Results encourage consideration of these bidirectional, power-to-power, cross-frequency control mechanisms as an important feature of cerebral network organization supporting executive function.
Collapse
Affiliation(s)
- Tzvetan Popov
- Department of Psychology, University Konstanz, Konstanz, Germany.
| | - Petia Popova
- Department of Psychology, University Konstanz, Konstanz, Germany
| | | | - Barbara Awiszus
- Department of Psychology, University Konstanz, Konstanz, Germany
| | | | - Gregory A Miller
- Department of Psychology and Department of Psychiatry and Biobehavioral Sciences, UCLA, USA
| |
Collapse
|
12
|
Time Course of Brain Network Reconfiguration Supporting Inhibitory Control. J Neurosci 2018; 38:4348-4356. [PMID: 29636394 DOI: 10.1523/jneurosci.2639-17.2018] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2017] [Revised: 03/20/2018] [Accepted: 03/26/2018] [Indexed: 12/14/2022] Open
Abstract
Hemodynamic research has recently clarified key nodes and links in brain networks implementing inhibitory control. Although fMRI methods are optimized for identifying the structure of brain networks, the relatively slow temporal course of fMRI limits the ability to characterize network operation. The latter is crucial for developing a mechanistic understanding of how brain networks shift dynamically to support inhibitory control. To address this critical gap, we applied spectrally resolved Granger causality (GC) and random forest machine learning tools to human EEG data in two large samples of adults (test sample n = 96, replication sample n = 237, total N = 333, both sexes) who performed a color-word Stroop task. Time-frequency analysis confirmed that recruitment of inhibitory control accompanied by slower behavioral responses was related to changes in theta and alpha/beta power. GC analyses revealed directionally asymmetric exchanges within frontal and between frontal and parietal brain areas: top-down influence of superior frontal gyrus (SFG) over both dorsal ACC (dACC) and inferior frontal gyrus (IFG), dACC control over middle frontal gyrus (MFG), and frontal-parietal exchanges (IFG, precuneus, MFG). Predictive analytics confirmed a combination of behavioral and brain-derived variables as the best set of predictors of inhibitory control demands, with SFG theta bearing higher classification importance than dACC theta and posterior beta tracking the onset of behavioral response. The present results provide mechanistic insight into the biological implementation of a psychological phenomenon: inhibitory control is implemented by dynamic routing processes during which the target response is upregulated via theta-mediated effective connectivity within key PFC nodes and via beta-mediated motor preparation.SIGNIFICANCE STATEMENT Hemodynamic neuroimaging research has recently clarified regional structures in brain networks supporting inhibitory control. However, due to inherent methodological constraints, much of this research has been unable to characterize the temporal dynamics of such networks (e.g., direction of information flow between nodes). Guided by fMRI research identifying the structure of brain networks supporting inhibitory control, results of EEG source analysis in a test sample (n = 96) and replication sample (n = 237) using effective connectivity and predictive analytics strategies advance a model of inhibitory control by characterizing the precise temporal dynamics by which this network operates and exemplify an approach by which mechanistic models can be developed for other key psychological processes.
Collapse
|
13
|
Wang X, Pinto-Duarte A, Behrens MM, Zhou X, Sejnowski TJ. Ketamine independently modulated power and phase-coupling of theta oscillations in Sp4 hypomorphic mice. PLoS One 2018. [PMID: 29513708 PMCID: PMC5841791 DOI: 10.1371/journal.pone.0193446] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023] Open
Abstract
Reduced expression of Sp4, the murine homolog of human SP4, a risk gene of multiple psychiatric disorders, led to N-methyl-D-aspartate (NMDA) hypofunction in mice, producing behavioral phenotypes reminiscent of schizophrenia, including hypersensitivity to ketamine. As accumulating evidence on molecular mechanisms and behavioral phenotypes established Sp4 hypomorphism as a promising animal model, systems-level neural circuit mechanisms of Sp4 hypomorphism, especially network dynamics underlying cognitive functions, remain poorly understood. We attempted to close this gap in knowledge in the present study by recording multi-channel epidural electroencephalogram (EEG) from awake behaving wildtype and Sp4 hypomorphic mice. We characterized cortical theta-band power and phase-coupling phenotypes, a known neural circuit substrate underlying cognitive functions, and further studied the effects of a subanesthetic dosage of ketamine on theta abnormalities unique to Sp4 hypomorphism. Sp4 hypomorphic mice had markedly elevated theta power localized frontally and parietally, a more pronounced theta phase progression along the neuraxis, and a stronger frontal-parietal theta coupling. Acute subanesthetic ketamine did not affect theta power in wildtype animals but significantly reduced it in Sp4 hypomorphic mice, nearly completely neutralizing their excessive frontal/parietal theta power. Ketamine did not significantly alter cortical theta phase progression in either wildtype or Sp4 hypomorphic animals, but significantly strengthened cortical theta phase-coupling in wildtype, but not in Sp4 hypomorphic animals. Our results suggested that the resting-state phenotypes of cortical theta oscillations unique to Sp4 hypomorphic mice closely mimicked a schizophrenic endophenotype. Further, ketamine independently modulated Sp4 hypomorphic anomalies in theta power and phase-coupling, suggesting separate underlying neural circuit mechanisms.
Collapse
Affiliation(s)
- Xin Wang
- Howard Hughes Medical Institute, the Salk Institute for Biological Studies, La Jolla, California, United States of America
- * E-mail:
| | - António Pinto-Duarte
- Howard Hughes Medical Institute, the Salk Institute for Biological Studies, La Jolla, California, United States of America
| | - M. Margarita Behrens
- Howard Hughes Medical Institute, the Salk Institute for Biological Studies, La Jolla, California, United States of America
| | - Xianjin Zhou
- Department of Psychiatry, University of California at San Diego, La Jolla, California, United States of America
| | - Terrence J. Sejnowski
- Howard Hughes Medical Institute, the Salk Institute for Biological Studies, La Jolla, California, United States of America
- Division of Biology, University of California at San Diego, La Jolla, California, United States of America
| |
Collapse
|
14
|
Won GH, Kim JW, Choi TY, Lee YS, Min KJ, Seol KH. Theta-phase gamma-amplitude coupling as a neurophysiological marker in neuroleptic-naïve schizophrenia. Psychiatry Res 2018; 260:406-411. [PMID: 29253805 DOI: 10.1016/j.psychres.2017.12.021] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/05/2017] [Revised: 10/25/2017] [Accepted: 12/09/2017] [Indexed: 02/03/2023]
Abstract
Theta-phase gamma-amplitude coupling (TGC) was used as an evidence-based tool to reflect the dysfunctional cortico-thalamic interaction in patients with schizophrenia. The aim of the present study was to evaluate the diagnostic utility of TGC. The subjects included 90 patients with schizophrenia and 90 healthy controls. We compared the TGC results between the groups using an analysis of covariance (ANCOVA) to adjust for age and sex and receiver operator characteristic (ROC) curve analyses to examine the discrimination ability of delta to gamma frequency bands and TGC. Patients with schizophrenia showed a significant increase in the resting-state TGC at all 19 electrodes. The analysis of the ROC curves for each frequency band exhibited relatively low classification accuracies for the delta, theta, slow alpha, fast alpha, and beta power. The TGC generated the most accurate results among the electroencephalography (EEG) measures, with an overall classification accuracy of 92.5%. The resting-state TGC value was increased in patients with schizophrenia compared to that in healthy controls and had a higher discriminating ability than the other parameters. These findings may be related to the compensatory hyper-arousal patterns of the dysfunctional default-mode network (DMN) in schizophrenia. Therefore, resting-state TGC is a promising neurophysiological marker of schizophrenia.
Collapse
Affiliation(s)
- Geun Hui Won
- Department of Psychiatry, Catholic University of Daegu School of Medicine, Daegu, Republic of Korea
| | - Jun Won Kim
- Department of Psychiatry, Catholic University of Daegu School of Medicine, Daegu, Republic of Korea.
| | - Tae Young Choi
- Department of Psychiatry, Catholic University of Daegu School of Medicine, Daegu, Republic of Korea
| | - Young Sik Lee
- Department of Psychiatry, Chung-Ang University, College of Medicine, Seoul, Republic of Korea
| | - Kyung Joon Min
- Department of Psychiatry, Chung-Ang University, College of Medicine, Seoul, Republic of Korea
| | - Ki Ho Seol
- Department of Radiation Oncology, Catholic University of Daegu School of Medicine, Daegu, Republic of Korea
| |
Collapse
|
15
|
Sherif MA, Cortes-Briones JA, Ranganathan M, Skosnik PD. Cannabinoid-glutamate interactions and neural oscillations: implications for psychosis. Eur J Neurosci 2018; 48:2890-2902. [PMID: 29247465 DOI: 10.1111/ejn.13800] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2017] [Revised: 12/06/2017] [Accepted: 12/07/2017] [Indexed: 12/13/2022]
Affiliation(s)
- Mohamed A. Sherif
- Department of Psychiatry; Yale University School of Medicine; VA Connecticut Healthcare System Building 5, Suite C-214 950 Campbell Avenue West Haven CT 06516 USA
| | - Jose A. Cortes-Briones
- Department of Psychiatry; Yale University School of Medicine; VA Connecticut Healthcare System Building 5, Suite C-214 950 Campbell Avenue West Haven CT 06516 USA
| | - Mohini Ranganathan
- Department of Psychiatry; Yale University School of Medicine; VA Connecticut Healthcare System Building 5, Suite C-214 950 Campbell Avenue West Haven CT 06516 USA
| | - Patrick D. Skosnik
- Department of Psychiatry; Yale University School of Medicine; VA Connecticut Healthcare System Building 5, Suite C-214 950 Campbell Avenue West Haven CT 06516 USA
| |
Collapse
|
16
|
Barr MS, Rajji TK, Zomorrodi R, Radhu N, George TP, Blumberger DM, Daskalakis ZJ. Impaired theta-gamma coupling during working memory performance in schizophrenia. Schizophr Res 2017; 189:104-110. [PMID: 28148460 DOI: 10.1016/j.schres.2017.01.044] [Citation(s) in RCA: 51] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/13/2016] [Revised: 01/21/2017] [Accepted: 01/24/2017] [Indexed: 11/29/2022]
Abstract
BACKGROUND Working memory deficits represent a core feature of schizophrenia. These deficits have been associated with dysfunctional dorsolateral prefrontal cortex (DLPFC) cortical oscillations. Theta-gamma coupling describes the modulation of gamma oscillations by theta phasic activity that has been directly associated with the ordering of information during working memory performance. Evaluating theta-gamma coupling may provide greater insight into the neural mechanisms mediating working memory deficits in this disorder. METHODS Thirty-eight patients diagnosed with schizophrenia or schizoaffective disorder and 38 healthy controls performed the verbal N-Back task administered at 4 levels, while EEG was recorded. Theta (4-7Hz)-gamma (30-50Hz) coupling was calculated for target and non-target correct trials for each working memory load. The relationship between theta-gamma coupling and accuracy was determined. RESULTS Theta-gamma coupling was significantly and selectively impaired during correct responses to target letters among schizophrenia patients compared to healthy controls. A significant and positive relationship was found between theta-gamma coupling and 3-Back accuracy in controls, while this relationship was not observed in patients. CONCLUSIONS These findings suggest that impaired theta-gamma coupling contribute to working memory dysfunction in schizophrenia. Future work is needed to evaluate the predictive utility of theta-gamma coupling as a neurophysiological marker for functional outcomes in this disorder.
Collapse
Affiliation(s)
- Mera S Barr
- Biobehavioural Addictions and Concurrent Disorders Laboratory (BACDRL), Addictions Division, Canada; Temerty Centre for Therapeutic Brain Intervention, Mood and Anxiety Division, Canada; Department of Psychiatry, Division of Brain and Therapeutics, University of Toronto, Toronto, Canada
| | - Tarek K Rajji
- Temerty Centre for Therapeutic Brain Intervention, Mood and Anxiety Division, Canada; Geriatric Psychiatry Division, Centre for Addiction and Mental Health, Canada
| | - Reza Zomorrodi
- Temerty Centre for Therapeutic Brain Intervention, Mood and Anxiety Division, Canada
| | - Natasha Radhu
- Temerty Centre for Therapeutic Brain Intervention, Mood and Anxiety Division, Canada
| | - Tony P George
- Biobehavioural Addictions and Concurrent Disorders Laboratory (BACDRL), Addictions Division, Canada; Department of Psychiatry, Division of Brain and Therapeutics, University of Toronto, Toronto, Canada
| | - Daniel M Blumberger
- Temerty Centre for Therapeutic Brain Intervention, Mood and Anxiety Division, Canada; Geriatric Psychiatry Division, Centre for Addiction and Mental Health, Canada
| | - Zafiris J Daskalakis
- Temerty Centre for Therapeutic Brain Intervention, Mood and Anxiety Division, Canada; Department of Psychiatry, Division of Brain and Therapeutics, University of Toronto, Toronto, Canada.
| |
Collapse
|
17
|
Alamian G, Hincapié AS, Pascarella A, Thiery T, Combrisson E, Saive AL, Martel V, Althukov D, Haesebaert F, Jerbi K. Measuring alterations in oscillatory brain networks in schizophrenia with resting-state MEG: State-of-the-art and methodological challenges. Clin Neurophysiol 2017; 128:1719-1736. [DOI: 10.1016/j.clinph.2017.06.246] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2017] [Revised: 05/08/2017] [Accepted: 06/19/2017] [Indexed: 02/06/2023]
|
18
|
Heller W. Award for distinguished contributions to psychophysiology: Gregory A. Miller. Psychophysiology 2016; 53:961-4. [DOI: 10.1111/psyp.12655] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2016] [Accepted: 03/11/2016] [Indexed: 11/27/2022]
Affiliation(s)
- Wendy Heller
- Department of Psychology; University of Illinois; Champaign-Urbana Illinois USA
| |
Collapse
|
19
|
Roa Romero Y, Keil J, Balz J, Gallinat J, Senkowski D. Reduced frontal theta oscillations indicate altered crossmodal prediction error processing in schizophrenia. J Neurophysiol 2016; 116:1396-407. [PMID: 27358314 DOI: 10.1152/jn.00096.2016] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2016] [Accepted: 06/24/2016] [Indexed: 01/24/2023] Open
Abstract
Our brain generates predictions about forthcoming stimuli and compares predicted with incoming input. Failures in predicting events might contribute to hallucinations and delusions in schizophrenia (SZ). When a stimulus violates prediction, neural activity that reflects prediction error (PE) processing is found. While PE processing deficits have been reported in unisensory paradigms, it is unknown whether SZ patients (SZP) show altered crossmodal PE processing. We measured high-density electroencephalography and applied source estimation approaches to investigate crossmodal PE processing generated by audiovisual speech. In SZP and healthy control participants (HC), we used an established paradigm in which high- and low-predictive visual syllables were paired with congruent or incongruent auditory syllables. We examined crossmodal PE processing in SZP and HC by comparing differences in event-related potentials and neural oscillations between incongruent and congruent high- and low-predictive audiovisual syllables. In both groups event-related potentials between 206 and 250 ms were larger in high- compared with low-predictive syllables, suggesting intact audiovisual incongruence detection in the auditory cortex of SZP. The analysis of oscillatory responses revealed theta-band (4-7 Hz) power enhancement in high- compared with low-predictive syllables between 230 and 370 ms in the frontal cortex of HC but not SZP. Thus aberrant frontal theta-band oscillations reflect crossmodal PE processing deficits in SZ. The present study suggests a top-down multisensory processing deficit and highlights the role of dysfunctional frontal oscillations for the SZ psychopathology.
Collapse
Affiliation(s)
- Yadira Roa Romero
- Department of Psychiatry and Psychotherapy, Charité-Universitätsmedizin Berlin Hospital, St. Hedwig Hospital, Berlin, Germany; and
| | - Julian Keil
- Department of Psychiatry and Psychotherapy, Charité-Universitätsmedizin Berlin Hospital, St. Hedwig Hospital, Berlin, Germany; and
| | - Johanna Balz
- Department of Psychiatry and Psychotherapy, Charité-Universitätsmedizin Berlin Hospital, St. Hedwig Hospital, Berlin, Germany; and
| | - Jürgen Gallinat
- Department for Psychiatry and Psychotherapy, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
| | - Daniel Senkowski
- Department of Psychiatry and Psychotherapy, Charité-Universitätsmedizin Berlin Hospital, St. Hedwig Hospital, Berlin, Germany; and
| |
Collapse
|
20
|
Berger B, Minarik T, Griesmayr B, Stelzig-Schoeler R, Aichhorn W, Sauseng P. Brain Oscillatory Correlates of Altered Executive Functioning in Positive and Negative Symptomatic Schizophrenia Patients and Healthy Controls. Front Psychol 2016; 7:705. [PMID: 27242617 PMCID: PMC4861861 DOI: 10.3389/fpsyg.2016.00705] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2016] [Accepted: 04/27/2016] [Indexed: 01/22/2023] Open
Abstract
Working Memory and executive functioning deficits are core characteristics of patients suffering from schizophrenia. Electrophysiological research indicates that altered patterns of neural oscillatory mechanisms underpinning executive functioning are associated with the psychiatric disorder. Such brain oscillatory changes have been found in local amplitude differences at gamma and theta frequencies in task-specific cortical areas. Moreover, interregional interactions are also disrupted as signified by decreased phase coherence of fronto-posterior theta activity in schizophrenia patients. However, schizophrenia is not a one-dimensional psychiatric disorder but has various forms and expressions. A common distinction is between positive and negative symptomatology but most patients have both negative and positive symptoms to some extent. Here, we examined three groups—healthy controls, predominantly negative, and predominantly positive symptomatic schizophrenia patients—when performing a working memory task with increasing cognitive demand and increasing need for executive control. We analyzed brain oscillatory activity in the three groups separately and investigated how predominant symptomatology might explain differences in brain oscillatory patterns. Our results indicate that differences in task specific fronto-posterior network activity (i.e., executive control network) expressed by interregional phase synchronization are able to account for working memory dysfunctions between groups. Local changes in the theta and gamma frequency range also show differences between patients and healthy controls, and more importantly, between the two patient groups. We conclude that differences in oscillatory brain activation patterns related to executive processing can be an indicator for positive and negative symptomatology in schizophrenia. Furthermore, changes in cognitive and especially executive functioning in patients are expressed by alterations in a task-specific fronto-posterior connectivity even in the absence of behavioral impairment.
Collapse
Affiliation(s)
- Barbara Berger
- Department of Psychology, Biological Psychology, Ludwig-Maximilians University Munich, Germany
| | - Tamas Minarik
- Department of Psychology, Biological Psychology, Ludwig-Maximilians University Munich, Germany
| | - Birgit Griesmayr
- Department of Psychology, University of Salzburg Salzburg, Austria
| | - Renate Stelzig-Schoeler
- University Clinic for Psychiatry and Psychotherapy, Christian-Doppler-Clinic, Paracelsus-Medical Private University Salzburg, Austria
| | - Wolfgang Aichhorn
- University Clinic for Psychiatry and Psychotherapy, Christian-Doppler-Clinic, Paracelsus-Medical Private University Salzburg, Austria
| | - Paul Sauseng
- Department of Psychology, Biological Psychology, Ludwig-Maximilians University Munich, Germany
| |
Collapse
|
21
|
Dysfunctional prefrontal gamma-band oscillations reflect working memory and other cognitive deficits in schizophrenia. Biol Psychiatry 2015; 77:1010-9. [PMID: 25847179 DOI: 10.1016/j.biopsych.2015.02.034] [Citation(s) in RCA: 110] [Impact Index Per Article: 12.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/01/2014] [Revised: 01/22/2015] [Accepted: 02/24/2015] [Indexed: 12/30/2022]
Abstract
Impairments in working memory (WM) and other cognitive functions are cardinal neuropsychological symptoms in schizophrenia (ScZ). The prefrontal cortex (PFC) is important for mediating and executing these functions. Functional neuroimaging and molecular studies have consistently shown PFC abnormalities in ScZ. In addition, recent studies have suggested that impairments in oscillatory activity, especially in the gamma band (approximately 30-80 Hz), reflect disturbed cortical information processing in this patient group. Here we review evidence that dysfunctional gamma-band responses (GBR) in the PFC could be a factor contributing to WM and other cognitive deficits in ScZ. We provide an overview of noninvasive electrophysiological studies reporting frontal GBR abnormalities in ScZ patients during WM and other cognitive tasks. In agreement with the often-reported hypofrontality in functional neuroimaging studies, the majority of reviewed studies revealed reduced amplitudes or reduced phase locking of GBR over frontal areas in this patient group. Clinical implications derived from these findings and possibilities to foster future studies on GBR abnormalities in ScZ patients, are discussed. Since oscillatory activity in the gamma band has previously been linked to a variety of neurotransmitters, such as the gamma-aminobutyric acid-ergic system, the study of prefrontal GBR could also have implications for pharmacologic approaches in the treatment of WM and other cognitive deficits in ScZ.
Collapse
|