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de la Salle S, Piche J, Duncan B, Choueiry J, Hyde M, Aidelbaum R, Baddeley A, Impey D, Rahmani N, Ilivitsky V, Knott V. Influence of GABA A and GABA B receptor activation on auditory sensory gating and its association with anxiety in healthy volunteers. J Psychopharmacol 2024; 38:532-540. [PMID: 38647196 DOI: 10.1177/02698811241246854] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 04/25/2024]
Abstract
BACKGROUND Dysfunctional sensory gating in anxiety disorders, indexed by the failure to inhibit the P50 event-related potential (ERP) to repeated stimuli, has been linked to deficits in the major inhibitory neurotransmitter γ-aminobutyric acid (GABA). AIMS/METHODS This study, conducted in 30 healthy volunteers, examined the acute effects of GABAA (lorazepam: 1 mg) and GABAB receptor (baclofen: 10 mg) agonists on P50 measures of auditory sensory gating within a paired-stimulus (S1-S2) paradigm and assessed changes in gating in relation to self-ratings of anxiety. RESULTS Compared to placebo, lorazepam reduced ERP indices of sensory gating by attenuating response to S1. Although not directly impacting P50 inhibition, baclofen-induced changes in gating (relative to placebo) were negatively correlated with trait but not state anxiety. CONCLUSIONS These preliminary findings support the involvement of GABA in sensory gating and tentatively suggest a role for GABAB receptor signaling in anxiety-associated gating dysregulation.
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Affiliation(s)
- Sara de la Salle
- The Royal's Institute of Mental Health Research at The Royal, Ottawa, ON, Canada
- School of Psychology, University of Ottawa, Ottawa, ON, Canada
| | - Justin Piche
- Department of Cellular and Molecular Medicine, University of Ottawa, Ottawa, ON, Canada
| | - Brittany Duncan
- Department of Psychology, Carleton University, Ottawa, ON, Canada
| | - Joëlle Choueiry
- The Royal's Institute of Mental Health Research at The Royal, Ottawa, ON, Canada
- Department of Cellular and Molecular Medicine, University of Ottawa, Ottawa, ON, Canada
| | - Molly Hyde
- Institute of Medical Science, University of Toronto, Toronto, ON, Canada
| | - Robert Aidelbaum
- School of Psychology, University of Toronto, Toronto, ON, Canada
| | - Ashley Baddeley
- The Royal's Institute of Mental Health Research at The Royal, Ottawa, ON, Canada
| | - Danielle Impey
- School of Psychology, University of Ottawa, Ottawa, ON, Canada
| | - Noreen Rahmani
- School of Psychology, University of Ottawa, Ottawa, ON, Canada
| | | | - Verner Knott
- The Royal's Institute of Mental Health Research at The Royal, Ottawa, ON, Canada
- Department of Cellular and Molecular Medicine, University of Ottawa, Ottawa, ON, Canada
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Wang D, Xia L, Zhang Z, Guo J, Tian Y, Zhou H, Xiu M, Chen D, Zhang XY. Association of P50 with social function, but not with cognition in patients with first-episode schizophrenia. Eur Arch Psychiatry Clin Neurosci 2023:10.1007/s00406-023-01711-w. [PMID: 37966511 DOI: 10.1007/s00406-023-01711-w] [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: 03/29/2023] [Accepted: 10/15/2023] [Indexed: 11/16/2023]
Abstract
Functional deficits including cognitive impairment and social dysfunction are the core symptoms of schizophrenia (SCZ), and sensory gating (SG) deficits may be involved in the pathological mechanism of functional deficits in SCZ. This study was to investigate the relationship between defective P50 inhibition and functional deficits in first-episode drug naïve (FEDN) SCZ patients. A total of 95 FEDN SCZ patients and 53 healthy controls (HC) were recruited. The Chinese version of UCSD Performance-Based Skills (UPSA), MATRICS Consensus Cognitive Battery (MCCB), and EEG system were used to assess the social function, cognitive performance, and P50 inhibition, respectively. The MCCB total score and eight domain scores were significantly lower in patients with FEDN SCZ than those in HC (all p < 0.05). The UPSA total score and financial skills scores were also significantly lower in SCZ patients than that in the HC (all p < 0.05). Compared with HC, patients with FEDF SCZ had a higher P50 ratio (all p < 0.05). There was no correlation between P50 components and MCCB scores in patients with FEDF SCZ. However, there was only a correlation between the P50 ratio and UPSA financial skills, communication skills, or total score in patients (all p < 0.05). Defective P50 inhibition in FEDN SCZ patients may be associated with social dysfunction but not cognitive impairment, suggesting that the social dysfunction and cognitive impairment of patients with FEDN SCZ may have different pathogenic mechanisms.
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Affiliation(s)
- Dongmei Wang
- CAS Key Laboratory of Mental Health, Institute of Psychology, Chinese Academy of Sciences, 16 Lincui Road, Chaoyang District, Beijing, 100101, China
- Department of Psychology, University of Chinese Academy of Sciences, Beijing, China
| | - Luyao Xia
- CAS Key Laboratory of Mental Health, Institute of Psychology, Chinese Academy of Sciences, 16 Lincui Road, Chaoyang District, Beijing, 100101, China
- Department of Psychology, University of Chinese Academy of Sciences, Beijing, China
| | - Zhiqi Zhang
- Department of Psychology, Barnard College of Columbia University, New York, NY, USA
| | - Junru Guo
- CAS Key Laboratory of Mental Health, Institute of Psychology, Chinese Academy of Sciences, 16 Lincui Road, Chaoyang District, Beijing, 100101, China
- Department of Psychology, Guizhou Minzu University, Guiyang, China
| | - Yang Tian
- CAS Key Laboratory of Mental Health, Institute of Psychology, Chinese Academy of Sciences, 16 Lincui Road, Chaoyang District, Beijing, 100101, China
- Department of Psychology, University of Chinese Academy of Sciences, Beijing, China
| | - Huixia Zhou
- CAS Key Laboratory of Mental Health, Institute of Psychology, Chinese Academy of Sciences, 16 Lincui Road, Chaoyang District, Beijing, 100101, China
- Department of Psychology, University of Chinese Academy of Sciences, Beijing, China
| | - Meihong Xiu
- Beijing HuiLongGuan Hospital, Peking University, Beijing, China
| | - Dachun Chen
- Beijing HuiLongGuan Hospital, Peking University, Beijing, China
| | - Xiang-Yang Zhang
- CAS Key Laboratory of Mental Health, Institute of Psychology, Chinese Academy of Sciences, 16 Lincui Road, Chaoyang District, Beijing, 100101, China.
- Department of Psychology, University of Chinese Academy of Sciences, Beijing, China.
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Ioakeimidis V, Lennuyeux-Comnene L, Khachatoorian N, Gaigg SB, Haenschel C, Kyriakopoulos M, Dima D. Trait and State Anxiety Effects on Mismatch Negativity and Sensory Gating Event-Related Potentials. Brain Sci 2023; 13:1421. [PMID: 37891790 PMCID: PMC10605251 DOI: 10.3390/brainsci13101421] [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: 09/11/2023] [Revised: 09/29/2023] [Accepted: 10/02/2023] [Indexed: 10/29/2023] Open
Abstract
We used the auditory roving oddball to investigate whether individual differences in self-reported anxiety influence event-related potential (ERP) activity related to sensory gating and mismatch negativity (MMN). The state-trait anxiety inventory (STAI) was used to assess the effects of anxiety on the ERPs for auditory change detection and information filtering in a sample of thirty-six healthy participants. The roving oddball paradigm involves presentation of stimulus trains of auditory tones with certain frequencies followed by trains of tones with different frequencies. Enhanced negative mid-latency response (130-230 ms post-stimulus) was marked at the deviant (first tone) and the standard (six or more repetitions) tone at Fz, indicating successful mismatch negativity (MMN). In turn, the first and second tone in a stimulus train were subject to sensory gating at the Cz electrode site as a response to the second stimulus was suppressed at an earlier latency (40-80 ms). We used partial correlations and analyses of covariance to investigate the influence of state and trait anxiety on these two processes. Higher trait anxiety exhibited enhanced MMN amplitude (more negative) (F(1,33) = 14.259, p = 6.323 × 10-6, ηp2 = 0.302), whereas state anxiety reduced sensory gating (F(1,30) = 13.117, p = 0.001, ηp2 = 0.304). Our findings suggest that high trait-anxious participants demonstrate hypervigilant change detection to deviant tones that appear more salient, whereas increased state anxiety associates with failure to filter out irrelevant stimuli.
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Affiliation(s)
- Vasileios Ioakeimidis
- Department of Psychology, School of Health and Psychological Sciences, City University of London, 10 Northampton Square, London EC1V 0HB, UK; (V.I.); (L.L.-C.); (S.B.G.); (C.H.)
| | - Laura Lennuyeux-Comnene
- Department of Psychology, School of Health and Psychological Sciences, City University of London, 10 Northampton Square, London EC1V 0HB, UK; (V.I.); (L.L.-C.); (S.B.G.); (C.H.)
| | - Nareg Khachatoorian
- Department of Psychology, School of Health and Psychological Sciences, City University of London, 10 Northampton Square, London EC1V 0HB, UK; (V.I.); (L.L.-C.); (S.B.G.); (C.H.)
| | - Sebastian B. Gaigg
- Department of Psychology, School of Health and Psychological Sciences, City University of London, 10 Northampton Square, London EC1V 0HB, UK; (V.I.); (L.L.-C.); (S.B.G.); (C.H.)
| | - Corinna Haenschel
- Department of Psychology, School of Health and Psychological Sciences, City University of London, 10 Northampton Square, London EC1V 0HB, UK; (V.I.); (L.L.-C.); (S.B.G.); (C.H.)
| | - Marinos Kyriakopoulos
- South London and the Maudsley NHS Foundation Trust, London SE5 8AF, UK
- Department of Child and Adolescent Psychiatry, Institute of Psychiatry, Psychology and Neuroscience, King’s College London, London SE5 8AF, UK
- 1st Department of Psychiatry, National and Kapodistrian University of Athens, 11528 Athens, Greece
| | - Danai Dima
- Department of Psychology, School of Health and Psychological Sciences, City University of London, 10 Northampton Square, London EC1V 0HB, UK; (V.I.); (L.L.-C.); (S.B.G.); (C.H.)
- Department of Neuroimaging, Institute of Psychiatry, Psychology and Neuroscience, King’s College London, London SE5 8AF, UK
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Sensory gating deficits and childhood trauma in the onset of first-episode schizophrenia. Asian J Psychiatr 2023; 80:103385. [PMID: 36542893 DOI: 10.1016/j.ajp.2022.103385] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/02/2022] [Revised: 09/09/2022] [Accepted: 09/20/2022] [Indexed: 12/14/2022]
Abstract
BACKGROUND Studies have shown sensory gating deficits and severe childhood trauma in patients with schizophrenia; however, their relationship with this condition remains unclear. Here, we hypothesized that sensory gating deficits mediate the effects of childhood trauma on schizophrenia onset. METHODS We recruited 79 patients with first-episode schizophrenia (PFES) and 76 health controls (HC). The auditory conditioning (S1) and testing (S2) stimulus paradigm was used to detect P50 sensory gating. The Childhood Trauma Questionnaire (CTQ) was used to assess childhood trauma experiences. RESULTS Compared with HC, the PFES group had more severe childhood trauma experiences together with sensory gating deficits. In a partial correlation analysis, sexual abuse was negatively correlated with the P50 S2 latency, physical neglect was negatively correlated with the S1 latency, while emotional neglect was positively correlated with the S2/S1 ratio and negatively correlated with the S1-S2 difference in the PFES group. However, there was no correlation between the CTQ total and each sub-scores and P50 indicators in the HC. The S1-S2 difference was the mediator between emotional neglect and the onset of schizophrenia. CONCLUSION Childhood trauma might be associated with schizophrenia by influencing sensory gating deficits. Early intervention targeting childhood trauma might reduce the incidence of sensory gating deficits and thus schizophrenia.
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Visuo-auditory stimuli with semantic, temporal and spatial congruence for a P300-based BCI: An exploratory test with an ALS patient in a completely locked-in state. J Neurosci Methods 2022; 379:109661. [PMID: 35817307 DOI: 10.1016/j.jneumeth.2022.109661] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2021] [Revised: 05/25/2022] [Accepted: 07/04/2022] [Indexed: 11/23/2022]
Abstract
BACKGROUND Brain-computer interfaces (BCIs) are a promising tool for communication with completely locked-in state (CLIS) patients. Despite the great efforts already made by the BCI research community, the cases of success are still very few, very exploratory, limited in time, and based on simple 'yes/no' paradigms. NEW METHOD A P300-based BCI is proposed comparing two conditions, one corresponding to purely spatial auditory stimuli (AU-S) and the other corresponding to hybrid visual and spatial auditory stimuli (HVA-S). In the HVA-S condition, there is a semantic, temporal, and spatial congruence between visual and auditory stimuli. The stimuli comprise a lexicon of 7 written and spoken words. Spatial sounds are generated through the head-related transfer function. Given the good results obtained with 10 able-bodied participants, we investigated whether a patient entering CLIS could use the proposed BCI. RESULTS The able-bodied group achieved 71.3 % and 90.5 % online classification accuracy for the auditory and hybrid BCIs respectively, while the patient achieved 30 % and chance level accuracies, for the same conditions. Notwithstanding, the patient's event-related potentials (ERPs) showed statistical discrimination between target and non-target events in different time windows. COMPARISON WITH EXISTING METHODS The results of the control group compare favorably with the state-of-the-art, considering a 7-class BCI controlled visual-covertly and with auditory stimuli. The integration of visual and auditory stimuli has not been tested before with CLIS patients. CONCLUSIONS The semantic, temporal, and spatial congruence of the stimuli increased the performance of the control group, but not of the CLIS patient, which can be due to impaired attention and cognitive function. The patient's unique ERP patterns make interpretation difficult, requiring further tests/paradigms to decouple patients' responses at different levels (reflexive, perceptual, cognitive). The ERPs discrimination found indicates that a simplification of the proposed approaches may be feasible.
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Vlcek P, Bob P. Schizophrenia, Bipolar Disorder and Pre-Attentional Inhibitory Deficits. Neuropsychiatr Dis Treat 2022; 18:821-827. [PMID: 35422621 PMCID: PMC9005071 DOI: 10.2147/ndt.s352157] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/23/2021] [Accepted: 03/09/2022] [Indexed: 11/25/2022] Open
Abstract
According to recent findings schizophrenia and bipolar disorder as separate disease entities manifest similarities in neuropsychological functioning. Typical disturbances in both disorders are related to sensory gating deficits characterized by decreased inhibitory functions in responses to various insignificant perceptual signals which are experimentally tested by event related potentials (ERP) and measured P50 wave. In this context, recent findings implicate that disrupted binding and disintegration of consciousness in schizophrenia and bipolar disorder that are related to inhibitory deficits reflected in P50 response may explain similarities in psychotic disturbances in both disorders. With this aim, this review summarizes literature about P50 in both schizophrenia and bipolar disorder.
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Affiliation(s)
- Premysl Vlcek
- National Institute of Mental Health, Klecany, Czech Republic.,Third Faculty of Medicine, Charles University, Prague, Czech Republic
| | - Petr Bob
- Center for Neuropsychiatric Research of Traumatic Stress, Department of Psychiatry and UHSL, First Faculty of Medicine, Department of Psychiatry, & Faculty of Medicine Pilsen, Charles University, Prague, Czech Republic
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Williams ZJ, Abdelmessih PG, Key AP, Woynaroski TG. Cortical Auditory Processing of Simple Stimuli Is Altered in Autism: A Meta-analysis of Auditory Evoked Responses. BIOLOGICAL PSYCHIATRY. COGNITIVE NEUROSCIENCE AND NEUROIMAGING 2021; 6:767-781. [PMID: 33229245 PMCID: PMC8639293 DOI: 10.1016/j.bpsc.2020.09.011] [Citation(s) in RCA: 20] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/08/2020] [Revised: 09/15/2020] [Accepted: 09/15/2020] [Indexed: 12/29/2022]
Abstract
BACKGROUND Auditory perceptual abnormalities are common in persons on the autism spectrum. The neurophysiologic underpinnings of these differences have frequently been studied using auditory event-related potentials (ERPs) and event-related magnetic fields (ERFs). However, no study to date has quantitatively synthesized this literature to determine whether early auditory ERP/ERF latencies or amplitudes in autistic persons differ from those of typically developing control subjects. METHODS We searched PubMed and ProQuest for studies comparing 1) latencies/amplitudes of P1/M50, N1b, N1c, M100, P2/M200, and/or N2 ERP/ERF components evoked by pure tones and 2) paired-click sensory gating (P1/N1b amplitude suppression) in autistic individuals and typically developing control subjects. Effects were synthesized using Bayesian 3-level meta-analysis. RESULTS In response to pure tones, autistic individuals exhibited prolonged P1/M50 latencies (g = 0.341 [95% credible interval = 0.166, 0.546]), prolonged M100 latencies (g = 0.319 [0.093, 0.550]), reduced N1c amplitudes (g = -0.812 [-1.278, -0.187]), and reduced N2 amplitudes (g = -0.374 [-0.633, -0.179]). There were no practically significant group differences in P2/M200 latencies, N2 latencies, P1/M50 amplitudes, N1b amplitudes, M100 amplitudes, or P2/M200 amplitudes. Paired-click sensory gating was also reduced in autistic individuals (g = -0.389 [-0.619, -0.112]), although this effect was primarily driven by smaller responses to the first click stimulus. CONCLUSIONS Relative to typically developing control subjects, autistic individuals demonstrate multiple alterations in early cortical auditory processing of simple stimuli. However, most group differences were modest in size and based on small numbers of heterogeneous studies with variable quality. Future work is necessary to understand whether these neurophysiologic measures can predict clinically meaningful outcomes or serve as stratification biomarkers for the autistic population.
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Affiliation(s)
- Zachary J Williams
- Medical Scientist Training Program, Vanderbilt University School of Medicine, Nashville, Tennessee; Vanderbilt Brain Institute, Vanderbilt University, Nashville, Tennessee; Frist Center for Autism and Innovation, Vanderbilt University, Nashville, Tennessee; Department of Hearing and Speech Sciences, Vanderbilt University Medical Center, Nashville, Tennessee.
| | - Peter G Abdelmessih
- Neuroscience Undergraduate Program, Vanderbilt University, Nashville, Tennessee
| | - Alexandra P Key
- Department of Hearing and Speech Sciences, Vanderbilt University Medical Center, Nashville, Tennessee; Vanderbilt Kennedy Center, Vanderbilt University Medical Center, Nashville, Tennessee; Department of Psychiatry and Behavioral Sciences, Vanderbilt University Medical Center, Nashville, Tennessee
| | - Tiffany G Woynaroski
- Vanderbilt Brain Institute, Vanderbilt University, Nashville, Tennessee; Frist Center for Autism and Innovation, Vanderbilt University, Nashville, Tennessee; Department of Hearing and Speech Sciences, Vanderbilt University Medical Center, Nashville, Tennessee; Vanderbilt Kennedy Center, Vanderbilt University Medical Center, Nashville, Tennessee
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Kobayashi Y, Inaba H, Iwakura Y, Namba H, Sotoyama H, Murata Y, Iwamoto K, Nawa H. Inter-breeder differences in prepulse inhibition deficits of C57BL/6J mice in a maternal immune activation model. Neuropsychopharmacol Rep 2021; 41:416-421. [PMID: 34043885 PMCID: PMC8411318 DOI: 10.1002/npr2.12178] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2020] [Revised: 02/23/2021] [Accepted: 03/19/2021] [Indexed: 01/03/2023] Open
Abstract
Genetic and environmental factors interact with each other to influence the risk of various psychiatric diseases; however, the intensity and nature of their interactions remain to be elucidated. We established a maternal infection model using polyinosinic-polycytidylic acid (Poly(I:C)) to determine the relationship between the maternal breeding environment and behavioral changes in the offspring. We purchased pregnant C57BL/6J mice from three breeders and administered Poly(I:C) (2 mg/kg) intravenously in their tail vein on gestation day 15. The offspring were raised to 8-12 weeks old and subjected to the acoustic startle tests to compare their startle response intensity, prepulse inhibition levels, and degree of the adaptation of the startle response. No statistical interaction between Poly(I:C) administration and sex was observed for prepulse inhibition; thus, male and female mice were analyzed together. There was a statistical interaction between the breeder origin of offspring and prepulse inhibition; the Poly(I:C) challenge significantly decreased prepulse inhibition levels of the offspring born to the pregnant dams from Breeder A but not those from the other breeders. However, we failed to detect significant inter-breeder differences in Poly(I:C) effects on startle response and on startle adaptation with the given number of mice examined. The rearing environment of mouse dams has a prominent effect on the Poly(I:C)-induced prepulse inhibition deficits in this maternal immune activation model.
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Affiliation(s)
- Yutaro Kobayashi
- Molecular Neurobiology, Brain Research Institute, Niigata University, Niigata, Japan
| | - Hiroyoshi Inaba
- Molecular Neurobiology, Brain Research Institute, Niigata University, Niigata, Japan
| | - Yuriko Iwakura
- Molecular Neurobiology, Brain Research Institute, Niigata University, Niigata, Japan
| | - Hisaaki Namba
- Molecular Neurobiology, Brain Research Institute, Niigata University, Niigata, Japan
| | - Hidekazu Sotoyama
- Molecular Neurobiology, Brain Research Institute, Niigata University, Niigata, Japan
| | - Yui Murata
- Department of Molecular Brain Science, Graduate School of Life Sciences, Kumamoto University, Kumamoto, Japan
| | - Kazuya Iwamoto
- Department of Molecular Brain Science, Graduate School of Life Sciences, Kumamoto University, Kumamoto, Japan
| | - Hiroyuki Nawa
- Molecular Neurobiology, Brain Research Institute, Niigata University, Niigata, Japan
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Mazer P, Macedo I, Paiva TO, Ferreira-Santos F, Pasion R, Barbosa F, Almeida P, Silveira C, Cunha-Reis C, Marques-Teixeira J. Abnormal Habituation of the Auditory Event-Related Potential P2 Component in Patients With Schizophrenia. Front Psychiatry 2021; 12:630406. [PMID: 33815168 PMCID: PMC8012906 DOI: 10.3389/fpsyt.2021.630406] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/17/2020] [Accepted: 02/19/2021] [Indexed: 11/13/2022] Open
Abstract
Auditory event-related potentials (ERP) may serve as diagnostic tools for schizophrenia and inform on the susceptibility for this condition. Particularly, the examination of N1 and P2 components of the auditory ERP may shed light on the impairments of information processing streams in schizophrenia. However, the habituation properties (i.e., decreasing amplitude with the repeated presentation of an auditory stimulus) of these components remain poorly studied compared to other auditory ERPs. Therefore, the current study used a roving paradigm to assess the modulation and habituation of N1 and P2 to simple (pure tones) and complex sounds (human voices and bird songs) in 26 first-episode patients with schizophrenia and 27 healthy participants. To explore the habituation properties of these ERPs, we measured the decrease in amplitude over a train of seven repetitions of the same stimulus (either bird songs or human voices). We observed that, for human voices, N1 and P2 amplitudes decreased linearly from stimulus 1-7, in both groups. Regarding bird songs, only the P2 component showed a decreased amplitude with stimulus presentation, exclusively in the control group. This suggests that patients did not show a fading of neural responses to repeated bird songs, reflecting abnormal habituation to this stimulus. This could reflect the inability to inhibit irrelevant or redundant information at later stages of auditory processing. In turn schizophrenia patients appear to have a preserved auditory processing of human voices.
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Affiliation(s)
- Prune Mazer
- Laboratory of Neuropsychophysiology, Faculty of Psychology and Education Sciences of the University of Porto, Porto, Portugal.,School of Health, Polytechnic Institute of Porto, Porto, Portugal
| | - Inês Macedo
- Laboratory of Neuropsychophysiology, Faculty of Psychology and Education Sciences of the University of Porto, Porto, Portugal
| | - Tiago O Paiva
- Laboratory of Neuropsychophysiology, Faculty of Psychology and Education Sciences of the University of Porto, Porto, Portugal
| | - Fernando Ferreira-Santos
- Laboratory of Neuropsychophysiology, Faculty of Psychology and Education Sciences of the University of Porto, Porto, Portugal
| | - Rita Pasion
- Laboratory of Neuropsychophysiology, Faculty of Psychology and Education Sciences of the University of Porto, Porto, Portugal
| | - Fernando Barbosa
- Laboratory of Neuropsychophysiology, Faculty of Psychology and Education Sciences of the University of Porto, Porto, Portugal
| | - Pedro Almeida
- Faculty of Law, School of Criminology and Interdisciplinary Research Center on Crime, Justice and Security, University of Porto, Porto, Portugal
| | - Celeste Silveira
- Faculty of Medicine, University of Porto, Porto, Portugal.,Psychiatry Department, Hospital S. João, Porto, Portugal
| | - Cassilda Cunha-Reis
- Laboratory of Neuropsychophysiology, Faculty of Psychology and Education Sciences of the University of Porto, Porto, Portugal
| | - João Marques-Teixeira
- Laboratory of Neuropsychophysiology, Faculty of Psychology and Education Sciences of the University of Porto, Porto, Portugal
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Atagun MI, Drukker M, Hall MH, Altun IK, Tatli SZ, Guloksuz S, van Os J, van Amelsvoort T. Meta-analysis of auditory P50 sensory gating in schizophrenia and bipolar disorder. Psychiatry Res Neuroimaging 2020; 300:111078. [PMID: 32361172 DOI: 10.1016/j.pscychresns.2020.111078] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/08/2019] [Revised: 03/16/2020] [Accepted: 03/19/2020] [Indexed: 11/15/2022]
Abstract
The ability of the brain to reduce the amount of trivial or redundant sensory inputs is called gating function. Dysfunction of sensory gating may lead to cognitive fragmentation and poor real-world functioning. The auditory dual-click paradigm is a pertinent neurophysiological measure of sensory gating function. This meta-analysis aimed to examine the subcomponents of abnormal P50 waveforms in bipolar disorder and schizophrenia to assess P50 sensory gating deficits and examine effects of diagnoses, illness states (first-episode psychosis vs. schizophrenia, remission vs. episodes in bipolar disorder), and treatment status (medication-free vs. medicated). Literature search of PubMed between Jan 1st 1980 and March 31st 2019 identified 2091 records for schizophrenia, 362 for bipolar disorder. 115 studies in schizophrenia (4932 patients), 16 in bipolar disorder (975 patients) and 10 in first-degree relatives (848 subjects) met the inclusion criteria. P50 sensory gating ratio (S2/S1) and S1-S2 difference were significantly altered in schizophrenia, bipolar disorder and their first-degree relatives. First-episode psychosis did not differ from schizophrenia, however episodes altered P50 sensory gating in bipolar disorder. Medications improve P50 sensory gating alterations in schizophrenia significantly and at trend level in bipolar disorder. Future studies should examine longitudinal course of P50 sensory gating in schizophrenia and bipolar disorder.
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Affiliation(s)
- Murat Ilhan Atagun
- Department of Psychiatry, Ankara Yildirim Beyazit University Medical School, Universities Region, Ihsan Dogramaci Boulevard. No: 6, Bilkent, Cankaya, Ankara Turkey.
| | - Marjan Drukker
- Department of Psychiatry and Neuropsychology, Maastricht University School for Mental Health and Neuroscience, Faculty of Health, Medicine and Life Sciences, Maastricht, the Netherlands
| | - Mei Hua Hall
- Psychosis Neurobiology Laboratory, Harvard Medical School, McLean Hospital, Belmont, Massachusetts, USA
| | - Ilkay Keles Altun
- Department of Psychiatry, Bursa Higher Education Training and Education Hospital, Bursa, Turkey
| | | | - Sinan Guloksuz
- Department of Psychiatry and Neuropsychology, Maastricht University School for Mental Health and Neuroscience, Faculty of Health, Medicine and Life Sciences, Maastricht, the Netherlands; Department of Psychiatry, Yale University School of Medicine, New Haven, CT, USA
| | - Jim van Os
- Department of Psychiatry and Neuropsychology, Maastricht University School for Mental Health and Neuroscience, Faculty of Health, Medicine and Life Sciences, Maastricht, the Netherlands; King's Health Partners Department of Psychosis Studies, King's College London, Institute of Psychiatry, London, United Kingdom; Department of Psychiatry, Brain Centre Rudolf Magnus, University Medical Centre Utrecht, Utrecht, the Netherlands
| | - Thérèse van Amelsvoort
- Department of Psychiatry and Neuropsychology, Maastricht University School for Mental Health and Neuroscience, Faculty of Health, Medicine and Life Sciences, Maastricht, the Netherlands
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11
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Nguyen AT, Hetrick WP, O'Donnell BF, Brenner CA. Abnormal beta and gamma frequency neural oscillations mediate auditory sensory gating deficit in schizophrenia. J Psychiatr Res 2020; 124:13-21. [PMID: 32109667 DOI: 10.1016/j.jpsychires.2020.01.014] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/14/2019] [Revised: 01/15/2020] [Accepted: 01/25/2020] [Indexed: 12/15/2022]
Abstract
BACKGROUND Sensory gating is a process in which the brain's response to irrelevant and repetitive stimuli is inhibited. The sensory gating deficit in schizophrenia (SZ) is typically measured by the ratio or difference score of the P50 event-related potential (ERP) amplitudes in response to a paired click paradigm. While the P50 gating effect has usually been measured in relation to the peak amplitude of the S1 and S2 P50 ERPs, there is increasing evidence that inhibitory processes may be reflected by evoked or induced oscillatory activity during the inter-click interval in the beta (20-30 Hz) and gamma (30-50 Hz) frequency bands. We therefore examined the relationship between frequency specific activity in the inter-click interval with gating effects in the time and frequency domains. METHOD Paired-auditory stimuli were presented to 131 participants with schizophrenia and 196 healthy controls (HC). P50 ERP amplitudes to S1 and S2as well as averaged- and single-trial beta (20-30 Hz) and gamma (30-50 Hz) frequency power during the inter-click interval were measured from the CZ electrode site. RESULTS In the time domain, P50 gating deficits were apparent in both ratio and difference scores. This effect was mainly due to smaller S1 amplitudes in the patient group. SZ patients exhibited less evoked beta and gamma power, particularly at the 0-100 ms time point, in response to S1. Early (0-100 ms) evoked beta and gamma responses were critical in determining the S1 amplitude and extent of P50 gating across the delay interval for both HC and SZ. CONCLUSION Our findings support a disruption in initial sensory registration in those with SZ, and do not support an active mechanism throughout the delay interval. The degree of response to S1 and early beta and gamma frequency oscillations in the delay interval provides information about the mechanisms supporting auditory sensory gating, and may provide a framework for studying the mechanisms that support sensory inhibition.
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Affiliation(s)
- Ann T Nguyen
- Loma Linda University, Department of Psychology, 11130 Anderson St., Loma Linda, CA 92350, USA
| | - William P Hetrick
- Indiana University, Department of Psychological and Brain Sciences, 1101 East Tenth Street, Bloomington, IN, 47405, USA; Larue D. Carter Hospital, 2601 Cold Spring Road, Indianapolis, IN, 46220, USA
| | - Brian F O'Donnell
- Indiana University, Department of Psychological and Brain Sciences, 1101 East Tenth Street, Bloomington, IN, 47405, USA; Larue D. Carter Hospital, 2601 Cold Spring Road, Indianapolis, IN, 46220, USA
| | - Colleen A Brenner
- Loma Linda University, Department of Psychology, 11130 Anderson St., Loma Linda, CA 92350, USA.
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12
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Association of cognitive and P50 suppression deficits in chronic patients with schizophrenia. Clin Neurophysiol 2020; 131:725-733. [DOI: 10.1016/j.clinph.2019.12.405] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2019] [Revised: 12/03/2019] [Accepted: 12/23/2019] [Indexed: 12/30/2022]
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13
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Shen CL, Chou TL, Lai WS, Hsieh MH, Liu CC, Liu CM, Hwu HG. P50, N100, and P200 Auditory Sensory Gating Deficits in Schizophrenia Patients. Front Psychiatry 2020; 11:868. [PMID: 33192632 PMCID: PMC7481459 DOI: 10.3389/fpsyt.2020.00868] [Citation(s) in RCA: 26] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/13/2020] [Accepted: 08/10/2020] [Indexed: 01/08/2023] Open
Abstract
BACKGROUND Sensory gating describes neurological processes of filtering out redundant or unnecessary stimuli during information processing, and sensory gating deficits may contribute to the symptoms of schizophrenia. Among the three components of auditory event-related potentials reflecting sensory gating, P50 implies pre-attentional filtering of sensory information and N100/P200 reflects attention triggering and allocation processes. Although diminished P50 gating has been extensively documented in patients with schizophrenia, previous studies on N100 were inconclusive, and P200 has been rarely examined. This study aimed to investigate whether patients with schizophrenia have P50, N100, and P200 gating deficits compared with control subjects. METHODS Control subjects and clinically stable schizophrenia patients were recruited. The mid-latency auditory evoked responses, comprising P50, N100, and P200, were measured using the auditory-paired click paradigm without manipulation of attention. Sensory gating parameters included S1 amplitude, S2 amplitude, amplitude difference (S1-S2), and gating ratio (S2/S1). We also evaluated schizophrenia patients with PANSS to be correlated with sensory gating indices. RESULTS One hundred four patients and 102 control subjects were examined. Compared to the control group, schizophrenia patients had significant sensory gating deficits in P50, N100, and P200, reflected by larger gating ratios and smaller amplitude differences. Further analysis revealed that the S2 amplitude of P50 was larger, while the S1 amplitude of N100/P200 was smaller, in schizophrenia patients than in the controls. We found no correlations between sensory gating indices and schizophrenia positive or negative symptom clusters. However, we found a negative correlation between the P200 S2 amplitude and Bell's emotional discomfort factor/Wallwork's depressed factor. CONCLUSION Till date, this study has the largest sample size to analyze P50, N100, and P200 collectively by adopting the passive auditory paired-click paradigm without distractors. With covariates controlled for possible confounds, such as age, education, smoking amount and retained pairs, we found that schizophrenia patients had significant sensory gating deficits in P50-N100-P200. The schizophrenia patients had demonstrated a unique pattern of sensory gating deficits, including repetition suppression deficits in P50 and stimulus registration deficits in N100/200. These results suggest that sensory gating is a pervasive cognitive abnormality in schizophrenia patients that is not limited to the pre-attentive phase of information processing. Since P200 exhibited a large effect size and did not require additional time during recruitment, future studies of P50-N100-P200 collectively are highly recommended.
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Affiliation(s)
- Chen-Lan Shen
- Department of General Psychiatry, Tsao-Tun Psychiatric Center, Nanto, Taiwan.,Department of Psychology, College of Science, National Taiwan University, Taipei, Taiwan
| | - Tai-Li Chou
- Department of Psychology, College of Science, National Taiwan University, Taipei, Taiwan
| | - Wen-Sung Lai
- Department of Psychology, College of Science, National Taiwan University, Taipei, Taiwan
| | - Ming H Hsieh
- Department of Psychiatry, National Taiwan University Hospital and College of Medicine, Taipei, Taiwan.,Graduate Institute of Brain and Mind Sciences, National Taiwan University, Taipei, Taiwan
| | - Chen-Chung Liu
- Department of Psychiatry, National Taiwan University Hospital and College of Medicine, Taipei, Taiwan.,Graduate Institute of Brain and Mind Sciences, National Taiwan University, Taipei, Taiwan
| | - Chih-Min Liu
- Department of Psychiatry, National Taiwan University Hospital and College of Medicine, Taipei, Taiwan.,Graduate Institute of Brain and Mind Sciences, National Taiwan University, Taipei, Taiwan
| | - Hai-Gwo Hwu
- Department of Psychiatry, National Taiwan University Hospital and College of Medicine, Taipei, Taiwan.,Graduate Institute of Brain and Mind Sciences, National Taiwan University, Taipei, Taiwan
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14
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P50 inhibition deficit in patients with chronic schizophrenia: Relationship with cognitive impairment of MATRICS consensus cognitive battery. Schizophr Res 2020; 215:105-112. [PMID: 31780341 DOI: 10.1016/j.schres.2019.11.012] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/15/2019] [Revised: 11/01/2019] [Accepted: 11/05/2019] [Indexed: 12/16/2022]
Abstract
OBJECTIVE Cognitive impairment is a core symptom of schizophrenia (SCZ); however, its pathophysiological mechanisms remain unclear. The sensory gating (SG) deficits reflected by P50 inhibition are recurring in SCZ, and this inhibition may be related to the cognitive deficits seen in these individuals. This study aimed to investigate the relationship between P50 inhibition and cognitive dysfunction in SCZ, which has not been fully investigated up to this point. METHODS A total of 270 individuals with chronic SCZ and 116 healthy controls were enrolled in the study. Psychopathology of SCZ was rated by the positive and negative syndrome scale (PANSS), while cognitive function and P50 inhibition of subjects were assessed by the MATRICS Consensus Cognitive Battery (MCCB) and the electroencephalography system. RESULTS The MCCB total and its 10 index scores were significantly lower in patients than those in healthy controls (all p < 0.001). SCZ patients had a lower amplitude of S1, and higher P50 ratio than healthy controls (both p < 0.01). However, there were no significant correlations between the P50 ratio and any of the PANSS total and its subscale scores in SCZ patients (all p > 0.05). Moreover, no correlation was found between the P50 components and the MCCB scores (all p > 0.05). CONCLUSIONS Our findings suggest that the P50 inhibition deficits occur in Chinese individuals with SCZ, which may not be associated with their clinical symptoms and cognitive impairment.
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15
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Niemantsverdriet MBA, Slotema CW, van der Veen FM, van der Gaag M, Sommer IEC, Deen M, Franken IHA. Sensory processing deficiencies in patients with borderline personality disorder who experience auditory verbal hallucinations. Psychiatry Res 2019; 281:112545. [PMID: 31536946 DOI: 10.1016/j.psychres.2019.112545] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/12/2019] [Revised: 08/29/2019] [Accepted: 08/29/2019] [Indexed: 11/25/2022]
Abstract
Auditory verbal hallucinations (AVH) are common in patients with borderline personality disorder (BPD). We examined two candidate mechanisms of AVH in patients with BPD, suggested to underlie sensory processing systems that contribute to psychotic symptoms in patients with schizophrenia; sensory gating (P50 ratio and P50 difference) and change detection (mismatch negativity; MMN). Via electroencephalographic recordings P50 amplitude, P50 ratio, P50 difference and MMN amplitude were compared between 23 borderline patients with and 25 without AVH, and 26 healthy controls. Borderline patients with AVH had a significantly lower P50 difference compared with healthy controls, whereas no difference was found between borderline patients without AVH and healthy controls. The groups did not differ on MMN amplitude. The impaired sensory gating in patients with borderline personality disorder who experience AVH implies that P50 sensory gating deficiencies may underlie psychotic vulnerability in this specific patient group. Patients with borderline personality disorder with or without AVH did not have problems with auditory change detection. This may explain why they are spared from the poor outcome associated with negative symptoms and symptoms of disorganization in patients with chronic schizophrenia.
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Affiliation(s)
- Maria B A Niemantsverdriet
- Department of Personality Disorders, Parnassia Psychiatric Institute, Lijnbaan 4, The Hague, VA, 2512, the Netherlands.
| | - Christina W Slotema
- Department of Personality Disorders, Parnassia Psychiatric Institute, Lijnbaan 4, The Hague, VA, 2512, the Netherlands
| | - Frederik M van der Veen
- Institute of Psychology, Erasmus University Rotterdam, Mandeville Building, Rotterdam, DR, 1738, 3000, the Netherlands
| | - Mark van der Gaag
- Department of Clinical Psychology and Amsterdam Public Health Research Institute, VU University, Van der Boechorststraat 7, Amsterdam, BT, 1081, the Netherlands
| | - Iris E C Sommer
- Department of Neuroscience, University Medical Center Groningen, Antonius Deusinglaan 1, Groningen, AD, 9700, the Netherlands
| | - Mathijs Deen
- Department of Personality Disorders, Parnassia Psychiatric Institute, Lijnbaan 4, The Hague, VA, 2512, the Netherlands
| | - Ingmar H A Franken
- Institute of Psychology, Erasmus University Rotterdam, Mandeville Building, Rotterdam, DR, 1738, 3000, the Netherlands
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16
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Xiang J, Tian C, Niu Y, Yan T, Li D, Cao R, Guo H, Cui X, Cui H, Tan S, Wang B. Abnormal Entropy Modulation of the EEG Signal in Patients With Schizophrenia During the Auditory Paired-Stimulus Paradigm. Front Neuroinform 2019; 13:4. [PMID: 30837859 PMCID: PMC6390065 DOI: 10.3389/fninf.2019.00004] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2018] [Accepted: 01/22/2019] [Indexed: 12/20/2022] Open
Abstract
The complexity change in brain activity in schizophrenia is an interesting topic clinically. Schizophrenia patients exhibit abnormal task-related modulation of complexity, following entropy of electroencephalogram (EEG) analysis. However, complexity modulation in schizophrenia patients during the sensory gating (SG) task, remains unknown. In this study, the classical auditory paired-stimulus paradigm was introduced to investigate SG, and EEG data were recorded from 55 normal controls and 61 schizophrenia patients. Fuzzy entropy (FuzzyEn) was used to explore the complexity of brain activity under the conditions of baseline (BL) and the auditory paired-stimulus paradigm (S1 and S2). Generally, schizophrenia patients showed significantly higher FuzzyEn values in the frontal and occipital regions of interest (ROIs). Relative to the BL condition, the normalized values of FuzzyEn of normal controls were decreased greatly in condition S1 and showed less variance in condition S2. Schizophrenia patients showed a smaller decrease in the normalized values in condition S1. Moreover, schizophrenia patients showed significant diminution in the suppression ratios of FuzzyEn, attributed to the higher FuzzyEn values in condition S1. These results suggested that entropy modulation during the process of sensory information and SG was obvious in normal controls and significantly deficient in schizophrenia patients. Additionally, the FuzzyEn values measured in the frontal ROI were positively correlated with positive scores of Positive and Negative Syndrome Scale (PANSS), indicating that frontal entropy was a potential indicator in evaluating the clinical symptoms. However, negative associations were found between the FuzzyEn values of occipital ROIs and general and total scores of PANSS, likely reflecting the compensation effect in visual processing. Thus, our findings provided a deeper understanding of the deficits in sensory information processing and SG, which contribute to cognitive deficits and symptoms in patients with schizophrenia.
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Affiliation(s)
- Jie Xiang
- College of Information and Computer, Taiyuan University of Technology, Taiyuan, China
| | - Cheng Tian
- College of Information and Computer, Taiyuan University of Technology, Taiyuan, China
| | - Yan Niu
- College of Information and Computer, Taiyuan University of Technology, Taiyuan, China
| | - Ting Yan
- Translational Medicine Research Center Shanxi Medical University, Taiyuan, China
| | - Dandan Li
- College of Information and Computer, Taiyuan University of Technology, Taiyuan, China
| | - Rui Cao
- College of Information and Computer, Taiyuan University of Technology, Taiyuan, China
| | - Hao Guo
- College of Information and Computer, Taiyuan University of Technology, Taiyuan, China
| | - Xiaohong Cui
- College of Information and Computer, Taiyuan University of Technology, Taiyuan, China
| | - Huifang Cui
- College of Information and Computer, Taiyuan University of Technology, Taiyuan, China
| | - Shuping Tan
- Psychiatry Research Center, Beijing Huilongguan Hospital, Peking University, Beijing, China
| | - Bin Wang
- College of Information and Computer, Taiyuan University of Technology, Taiyuan, China
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17
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Boutros NN, Gjini K, Wang F, Bowyer SM. Evoked Potentials Investigations of Deficit Versus Nondeficit Schizophrenia: EEG-MEG Preliminary Data. Clin EEG Neurosci 2019; 50:75-87. [PMID: 30175598 DOI: 10.1177/1550059418797868] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Heterogeneity of schizophrenia is a major obstacle toward understanding the disorder. One likely subtype is the deficit syndrome (DS) where patients suffer from predominantly negative symptoms. This study investigated the evoked responses and the evoked magnetic fields to identify the neurophysiological deviations associated with the DS. Ten subjects were recruited for each group (Control, DS, and Nondeficit schizophrenia [NDS]). Subjects underwent magnetoencephalography (MEG) and electroencephalography (EEG) testing while listening to an oddball paradigm to generate the P300 as well as a paired click paradigm to generate the mid-latency auditory-evoked responses (MLAER) in a sensory gating paradigm. MEG-coherence source imaging (CSI) during P300 task revealed a significantly higher average coherence value in DS than NDS subjects in the gamma band (30-80 Hz), when listening to standard stimuli but only NDS subjects had a higher average coherence level in the gamma band than controls when listening to the novel sounds. P50, N100, and P3a ERP amplitudes (EEG analysis) were significantly decreased in NDS compared with DS subjects. The data suggest that the deviations in the 2 patient groups are qualitatively different. Deviances in NDS patients suggest difficulty in both early (as in the gating paradigm), as well as later top-down processes (P300 paradigm). The main deviation in the DS group was an exaggerated responsiveness to ongoing irrelevant stimuli detected by EEG whereas NDS subjects had an exaggerated response to novelty.
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Affiliation(s)
- Nash N Boutros
- Department of Psychiatry, University of Missouri-Kansas City (UMKC), Kansas City, MO, USA.,Saint Luke's Marion Bloch Neuroscience Institute, Kansas City, MO, USA
| | - Klevest Gjini
- Department of Neurology, University of Wisconsin-Madison, Madison, WI, USA
| | - Frank Wang
- Department of Neurology, Henry Ford Hospital, Detroit, MI, USA.,Wayne State University, Detroit, MI, USA
| | - Susan M Bowyer
- Department of Neurology, Henry Ford Hospital, Detroit, MI, USA.,Wayne State University, Detroit, MI, USA
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18
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Rosburg T. Auditory N100 gating in patients with schizophrenia: A systematic meta-analysis. Clin Neurophysiol 2018; 129:2099-2111. [DOI: 10.1016/j.clinph.2018.07.012] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2018] [Revised: 07/18/2018] [Accepted: 07/24/2018] [Indexed: 02/06/2023]
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19
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Aidelbaum R, Labelle A, Baddeley A, Knott V. Assessing the acute effects of CDP-choline on sensory gating in schizophrenia: A pilot study. J Psychopharmacol 2018; 32:541-551. [PMID: 29338621 DOI: 10.1177/0269881117746903] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Deficient sensory gating (SG) in schizophrenia is associated with functional outcome and offers a therapeutic target as it is linked to the altered function/expression of the α7 nicotinic acetylcholine receptors (nAChRs). This study analyzed the effects of citicoline (CDP-choline), a supplement with α7 nAChRs agonist properties, on SG in a sample of schizophrenia (SZ) patients. Using a randomized, placebo-controlled, double-blind design the dose-dependent (500 mg, 1000 mg, 2000 mg) and baseline-dependent (deficient versus normal suppressors) effects of CDP-choline on SG were examined using the P50 event-related potential (ERP) index of SG. Overall analysis failed to demonstrate treatment effects but CDP-choline improved SG (500 mg) in the deficient SZ subgroup by increasing suppression of the S2 P50 amplitude. These findings tentatively support α7 nAChR dysfunction in the expression of SG deficits and suggest further trials to assess the effects of sustained α7 nAChR activation on SG with low doses of CDP-choline.
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Affiliation(s)
- Robert Aidelbaum
- 1 Clinical Neuroelectrophysiology and Cognitive Research Laboratory, University of Ottawa Institute of Mental Health Research, ON, Canada.,2 Department of Psychology, Carleton University, ON, Canada
| | - Alain Labelle
- 3 Schizophrenia Program, Royal Ottawa Mental Health Centre, ON, Canada
| | - Ashley Baddeley
- 1 Clinical Neuroelectrophysiology and Cognitive Research Laboratory, University of Ottawa Institute of Mental Health Research, ON, Canada
| | - Verner Knott
- 1 Clinical Neuroelectrophysiology and Cognitive Research Laboratory, University of Ottawa Institute of Mental Health Research, ON, Canada
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20
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Lahera G, Ruiz A, Brañas A, Vicens M, Orozco A. Tiempo de reacción, velocidad de procesamiento y atención sostenida en esquizofrenia: impacto sobre el funcionamiento social. REVISTA DE PSIQUIATRIA Y SALUD MENTAL 2017; 10:197-205. [DOI: 10.1016/j.rpsm.2017.04.001] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/10/2016] [Revised: 02/21/2017] [Accepted: 04/12/2017] [Indexed: 01/27/2023]
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21
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Schubring D, Popov T, Miller GA, Rockstroh B. Consistency of abnormal sensory gating in first-admission and chronic schizophrenia across quantification methods. Psychophysiology 2017; 55. [DOI: 10.1111/psyp.13006] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/01/2017] [Revised: 08/24/2017] [Accepted: 08/24/2017] [Indexed: 01/08/2023]
Affiliation(s)
- David Schubring
- Department of Psychology; University of Konstanz; Konstanz Germany
| | - Tzvetan Popov
- Department of Psychology; University of Konstanz; Konstanz Germany
| | - Gregory A. Miller
- Department of Psychology and Department of Psychiatry and Biobehavioral Sciences; University of California; Los Angeles, Los Angeles California USA
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22
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Nord CL, Valton V, Wood J, Roiser JP. Power-up: A Reanalysis of 'Power Failure' in Neuroscience Using Mixture Modeling. J Neurosci 2017; 37:8051-8061. [PMID: 28706080 PMCID: PMC5566862 DOI: 10.1523/jneurosci.3592-16.2017] [Citation(s) in RCA: 53] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2016] [Revised: 06/06/2017] [Accepted: 06/17/2017] [Indexed: 11/25/2022] Open
Abstract
Recently, evidence for endemically low statistical power has cast neuroscience findings into doubt. If low statistical power plagues neuroscience, then this reduces confidence in the reported effects. However, if statistical power is not uniformly low, then such blanket mistrust might not be warranted. Here, we provide a different perspective on this issue, analyzing data from an influential study reporting a median power of 21% across 49 meta-analyses (Button et al., 2013). We demonstrate, using Gaussian mixture modeling, that the sample of 730 studies included in that analysis comprises several subcomponents so the use of a single summary statistic is insufficient to characterize the nature of the distribution. We find that statistical power is extremely low for studies included in meta-analyses that reported a null result and that it varies substantially across subfields of neuroscience, with particularly low power in candidate gene association studies. Therefore, whereas power in neuroscience remains a critical issue, the notion that studies are systematically underpowered is not the full story: low power is far from a universal problem.SIGNIFICANCE STATEMENT Recently, researchers across the biomedical and psychological sciences have become concerned with the reliability of results. One marker for reliability is statistical power: the probability of finding a statistically significant result given that the effect exists. Previous evidence suggests that statistical power is low across the field of neuroscience. Our results present a more comprehensive picture of statistical power in neuroscience: on average, studies are indeed underpowered-some very seriously so-but many studies show acceptable or even exemplary statistical power. We show that this heterogeneity in statistical power is common across most subfields in neuroscience. This new, more nuanced picture of statistical power in neuroscience could affect not only scientific understanding, but potentially policy and funding decisions for neuroscience research.
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Affiliation(s)
- Camilla L Nord
- Institute of Cognitive Neuroscience, University College London, London, WC1N 3AZ, United Kingdom, and
| | - Vincent Valton
- Institute of Cognitive Neuroscience, University College London, London, WC1N 3AZ, United Kingdom, and
| | - John Wood
- Research Department of Primary Care and Population Health, University College London Medical School, London NW3 2PF, United Kingdom
| | - Jonathan P Roiser
- Institute of Cognitive Neuroscience, University College London, London, WC1N 3AZ, United Kingdom, and
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23
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Zhu XL, Tan SP, Wang ZR, Zhang JG, Li D, Fan FM, Zhao YL, Zou YZ, Tan YL, Yang FD, Zhang XY. P50 suppression deficits and psychopathology in Han Chinese patients with schizophrenia. Neurosci Lett 2017; 653:346-350. [DOI: 10.1016/j.neulet.2017.06.009] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2016] [Revised: 06/05/2017] [Accepted: 06/08/2017] [Indexed: 12/18/2022]
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24
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Vogt J, Yang JW, Mobascher A, Cheng J, Li Y, Liu X, Baumgart J, Thalman C, Kirischuk S, Unichenko P, Horta G, Radyushkin K, Stroh A, Richers S, Sahragard N, Distler U, Tenzer S, Qiao L, Lieb K, Tüscher O, Binder H, Ferreiros N, Tegeder I, Morris AJ, Gropa S, Nürnberg P, Toliat MR, Winterer G, Luhmann HJ, Huai J, Nitsch R. Molecular cause and functional impact of altered synaptic lipid signaling due to a prg-1 gene SNP. EMBO Mol Med 2016; 8:25-38. [PMID: 26671989 PMCID: PMC4718157 DOI: 10.15252/emmm.201505677] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022] Open
Abstract
Loss of plasticity‐related gene 1 (PRG‐1), which regulates synaptic phospholipid signaling, leads to hyperexcitability via increased glutamate release altering excitation/inhibition (E/I) balance in cortical networks. A recently reported SNP in prg‐1 (R345T/mutPRG‐1) affects ~5 million European and US citizens in a monoallelic variant. Our studies show that this mutation leads to a loss‐of‐PRG‐1 function at the synapse due to its inability to control lysophosphatidic acid (LPA) levels via a cellular uptake mechanism which appears to depend on proper glycosylation altered by this SNP. PRG‐1+/− mice, which are animal correlates of human PRG‐1+/mut carriers, showed an altered cortical network function and stress‐related behavioral changes indicating altered resilience against psychiatric disorders. These could be reversed by modulation of phospholipid signaling via pharmacological inhibition of the LPA‐synthesizing molecule autotaxin. In line, EEG recordings in a human population‐based cohort revealed an E/I balance shift in monoallelic mutPRG‐1 carriers and an impaired sensory gating, which is regarded as an endophenotype of stress‐related mental disorders. Intervention into bioactive lipid signaling is thus a promising strategy to interfere with glutamate‐dependent symptoms in psychiatric diseases.
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Affiliation(s)
- Johannes Vogt
- Institute for Microscopic Anatomy and Neurobiology, University Medical Center, Johannes Gutenberg-University, Mainz, Germany
| | - Jenq-Wei Yang
- Institute for Physiology and Pathophysiology, University Medical Center, Johannes Gutenberg-University, Mainz, Germany
| | - Arian Mobascher
- Department of Psychiatry and Psychotherapy, University Medical Center, Johannes Gutenberg-University Mainz, Mainz, Germany
| | - Jin Cheng
- Institute for Microscopic Anatomy and Neurobiology, University Medical Center, Johannes Gutenberg-University, Mainz, Germany
| | - Yunbo Li
- Institute for Microscopic Anatomy and Neurobiology, University Medical Center, Johannes Gutenberg-University, Mainz, Germany
| | - Xingfeng Liu
- Institute for Microscopic Anatomy and Neurobiology, University Medical Center, Johannes Gutenberg-University, Mainz, Germany
| | - Jan Baumgart
- Institute for Microscopic Anatomy and Neurobiology, University Medical Center, Johannes Gutenberg-University, Mainz, Germany
| | - Carine Thalman
- Institute for Microscopic Anatomy and Neurobiology, University Medical Center, Johannes Gutenberg-University, Mainz, Germany
| | - Sergei Kirischuk
- Institute for Physiology and Pathophysiology, University Medical Center, Johannes Gutenberg-University, Mainz, Germany
| | - Petr Unichenko
- Institute for Physiology and Pathophysiology, University Medical Center, Johannes Gutenberg-University, Mainz, Germany
| | - Guilherme Horta
- Institute for Microscopic Anatomy and Neurobiology, University Medical Center, Johannes Gutenberg-University, Mainz, Germany
| | - Konstantin Radyushkin
- Focus Program Translational Neuroscience (FTN), University Medical Center, Johannes Gutenberg-University, Mainz, Germany
| | - Albrecht Stroh
- Institute for Microscopic Anatomy and Neurobiology, University Medical Center, Johannes Gutenberg-University, Mainz, Germany
| | - Sebastian Richers
- Institute for Microscopic Anatomy and Neurobiology, University Medical Center, Johannes Gutenberg-University, Mainz, Germany
| | - Nassim Sahragard
- Institute for Microscopic Anatomy and Neurobiology, University Medical Center, Johannes Gutenberg-University, Mainz, Germany
| | - Ute Distler
- Focus Program Translational Neuroscience (FTN), University Medical Center, Johannes Gutenberg-University, Mainz, Germany Institute for Immunology, University Medical Center, Johannes Gutenberg-University Mainz, Mainz, Germany
| | - Stefan Tenzer
- Institute for Immunology, University Medical Center, Johannes Gutenberg-University Mainz, Mainz, Germany
| | - Lianyong Qiao
- Institute for Microscopic Anatomy and Neurobiology, University Medical Center, Johannes Gutenberg-University, Mainz, Germany
| | - Klaus Lieb
- Department of Psychiatry and Psychotherapy, University Medical Center, Johannes Gutenberg-University Mainz, Mainz, Germany
| | - Oliver Tüscher
- Department of Psychiatry and Psychotherapy, University Medical Center, Johannes Gutenberg-University Mainz, Mainz, Germany
| | - Harald Binder
- Institute of Medical Biostatistics, Epidemiology and Informatics, University Medical Center, Johannes Gutenberg-University Mainz, Mainz, Germany
| | - Nerea Ferreiros
- Institute of Clinical Pharmacology Goethe-University Hospital, Frankfurt am Main, Germany
| | - Irmgard Tegeder
- Institute of Clinical Pharmacology Goethe-University Hospital, Frankfurt am Main, Germany
| | - Andrew J Morris
- Division of Cardiovascular Medicine, Gill Heart Institute, University of Kentucky, Lexington, KY, USA
| | - Sergiu Gropa
- Department of Neurology, University Medical Center, Johannes Gutenberg-University Mainz, Mainz, Germany
| | - Peter Nürnberg
- Cologne Center for Genomics (CCG), University of Cologne, Cologne, Germany
| | - Mohammad R Toliat
- Cologne Center for Genomics (CCG), University of Cologne, Cologne, Germany
| | - Georg Winterer
- Cologne Center for Genomics (CCG), University of Cologne, Cologne, Germany
| | - Heiko J Luhmann
- Institute for Physiology and Pathophysiology, University Medical Center, Johannes Gutenberg-University, Mainz, Germany
| | - Jisen Huai
- Institute for Microscopic Anatomy and Neurobiology, University Medical Center, Johannes Gutenberg-University, Mainz, Germany
| | - Robert Nitsch
- Institute for Microscopic Anatomy and Neurobiology, University Medical Center, Johannes Gutenberg-University, Mainz, Germany
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Mao Q, Tan YL, Luo XG, Tian L, Wang ZR, Tan SP, Chen S, Yang GG, An HM, Yang FD, Zhang XY. Association of catechol-O-methyltransferase Val(108/158) Met genetic polymorphism with schizophrenia, P50 sensory gating, and negative symptoms in a Chinese population. Psychiatry Res 2016; 242:271-276. [PMID: 27315458 DOI: 10.1016/j.psychres.2016.04.029] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/04/2015] [Revised: 01/08/2016] [Accepted: 04/13/2016] [Indexed: 01/17/2023]
Abstract
Catechol-O-methyltransferase (COMT), an enzyme involved in the degradation and inactivation of the neurotransmitter dopamine, is associated with the sensory gating phenomenon, protecting the cerebral cortex from information overload. The COMT Val(108/158)Met polymorphism is essential for prefrontal cortex processing capacity and efficiency. The current study was designed to investigate the role of COMT Val(108/158)Met polymorphism in development, sensory gating deficit, and symptoms of schizophrenia in Han Chinese population. P50 gating was determined in 139 schizophrenic patients and 165 healthy controls. Positive and Negative Syndrome Scale (PANSS) was used to assess the clinical symptomatology in 370 schizophrenic subjects. COMT Val(108/158)Met polymorphism was genotyped by PCR-restriction fragment length polymorphism (PCR-RFLP). No significant differences in COMT allele and genotype distributions were observed between schizophrenic patients and control groups. Although P50 deficits were present in patients, there was no evidence for an association between COMT Val(108/158)Met polymorphism and the P50 biomarker. Moreover, PANSS negative subscore was significantly higher in Val allele carriers than in Met/Met individuals. The present findings suggest that COMT Val(108/158)Met polymorphism may not contribute to the risk of schizophrenia and to the P50 deficits, but may contribute to the negative symptoms of schizophrenia among Han Chinese.
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Affiliation(s)
- Qiao Mao
- Biological Psychiatry Research Center, Peking University Huilongguan Teaching Hospital, Beijing 100096, PR China
| | - Yun-Long Tan
- Biological Psychiatry Research Center, Peking University Huilongguan Teaching Hospital, Beijing 100096, PR China.
| | - Xing-Guang Luo
- Department of Psychiatry, Yale University School of Medicine, New Haven, CT, USA
| | - Li Tian
- Neuroscience Center, University of Helsinki, Viikinkaari 4, FIN-00014 Helsinki, Finland
| | - Zhi-Ren Wang
- Biological Psychiatry Research Center, Peking University Huilongguan Teaching Hospital, Beijing 100096, PR China
| | - Shu-Ping Tan
- Biological Psychiatry Research Center, Peking University Huilongguan Teaching Hospital, Beijing 100096, PR China
| | - Song Chen
- Biological Psychiatry Research Center, Peking University Huilongguan Teaching Hospital, Beijing 100096, PR China
| | - Gui-Gang Yang
- Biological Psychiatry Research Center, Peking University Huilongguan Teaching Hospital, Beijing 100096, PR China
| | - Hui-Mei An
- Biological Psychiatry Research Center, Peking University Huilongguan Teaching Hospital, Beijing 100096, PR China
| | - Fu-De Yang
- Biological Psychiatry Research Center, Peking University Huilongguan Teaching Hospital, Beijing 100096, PR China
| | - Xiang-Yang Zhang
- Biological Psychiatry Research Center, Peking University Huilongguan Teaching Hospital, Beijing 100096, PR China; Department of Psychiatry and Behavioral Sciences, Harris County Psychiatric Center, The University of Texas Health Science Center at Houston, Houston, TX, USA
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The relevance of attention in schizophrenia P50 paired stimulus studies. Clin Neurophysiol 2016; 127:2448-54. [DOI: 10.1016/j.clinph.2016.03.013] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2015] [Revised: 03/06/2016] [Accepted: 03/09/2016] [Indexed: 11/24/2022]
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Atypical visual and somatosensory adaptation in schizophrenia-spectrum disorders. Transl Psychiatry 2016; 6:e804. [PMID: 27163205 PMCID: PMC5070065 DOI: 10.1038/tp.2016.63] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/28/2015] [Revised: 01/11/2016] [Accepted: 03/05/2016] [Indexed: 12/12/2022] Open
Abstract
Neurophysiological investigations in patients with schizophrenia consistently show early sensory processing deficits in the visual system. Importantly, comparable sensory deficits have also been established in healthy first-degree biological relatives of patients with schizophrenia and in first-episode drug-naive patients. The clear implication is that these measures are endophenotypic, related to the underlying genetic liability for schizophrenia. However, there is significant overlap between patient response distributions and those of healthy individuals without affected first-degree relatives. Here we sought to develop more sensitive measures of sensory dysfunction in this population, with an eye to establishing endophenotypic markers with better predictive capabilities. We used a sensory adaptation paradigm in which electrophysiological responses to basic visual and somatosensory stimuli presented at different rates (ranging from 250 to 2550 ms interstimulus intervals, in blocked presentations) were compared. Our main hypothesis was that adaptation would be substantially diminished in schizophrenia, and that this would be especially prevalent in the visual system. High-density event-related potential recordings showed amplitude reductions in sensory adaptation in patients with schizophrenia (N=15 Experiment 1, N=12 Experiment 2) compared with age-matched healthy controls (N=15 Experiment 1, N=12 Experiment 2), and this was seen for both sensory modalities. At the individual participant level, reduced adaptation was more robust for visual compared with somatosensory stimulation. These results point to significant impairments in short-term sensory plasticity across sensory modalities in schizophrenia. These simple-to-execute measures may prove valuable as candidate endophenotypes and will bear follow-up in future work.
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Rieger K, Diaz Hernandez L, Baenninger A, Koenig T. 15 Years of Microstate Research in Schizophrenia - Where Are We? A Meta-Analysis. Front Psychiatry 2016; 7:22. [PMID: 26955358 PMCID: PMC4767900 DOI: 10.3389/fpsyt.2016.00022] [Citation(s) in RCA: 98] [Impact Index Per Article: 12.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/04/2015] [Accepted: 02/09/2016] [Indexed: 01/24/2023] Open
Abstract
Schizophrenia patients show abnormalities in a broad range of task demands. Therefore, an explanation common to all these abnormalities has to be sought independently of any particular task, ideally in the brain dynamics before a task takes place or during resting state. For the neurobiological investigation of such baseline states, EEG microstate analysis is particularly well suited, because it identifies subsecond global states of stable connectivity patterns directly related to the recruitment of different types of information processing modes (e.g., integration of top-down and bottom-up information). Meanwhile, there is an accumulation of evidence that particular microstate networks are selectively affected in schizophrenia. To obtain an overall estimate of the effect size of these microstate abnormalities, we present a systematic meta-analysis over all studies available to date relating EEG microstates to schizophrenia. Results showed medium size effects for two classes of microstates, namely, a class labeled C that was found to be more frequent in schizophrenia and a class labeled D that was found to be shortened. These abnormalities may correspond to core symptoms of schizophrenia, e.g., insufficient reality testing and self-monitoring as during auditory verbal hallucinations. As interventional studies have shown that these microstate features may be systematically affected using antipsychotic drugs or neurofeedback interventions, these findings may help introducing novel diagnostic and treatment options.
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Affiliation(s)
- Kathryn Rieger
- Translational Research Center, University Hospital of Psychiatry, University of Bern, Bern, Switzerland; Center for Cognition, Learning and Memory, University of Bern, Bern, Switzerland
| | - Laura Diaz Hernandez
- Translational Research Center, University Hospital of Psychiatry, University of Bern, Bern, Switzerland; Center for Cognition, Learning and Memory, University of Bern, Bern, Switzerland
| | - Anja Baenninger
- Translational Research Center, University Hospital of Psychiatry, University of Bern , Bern , Switzerland
| | - Thomas Koenig
- Translational Research Center, University Hospital of Psychiatry, University of Bern, Bern, Switzerland; Center for Cognition, Learning and Memory, University of Bern, Bern, Switzerland
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Comparing Pharmacological Modulation of Sensory Gating in Healthy Humans and Rats: The Effects of Reboxetine and Haloperidol. Neuropsychopharmacology 2016; 41:638-45. [PMID: 26129678 PMCID: PMC5130139 DOI: 10.1038/npp.2015.194] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/26/2015] [Revised: 05/20/2015] [Accepted: 06/10/2015] [Indexed: 11/09/2022]
Abstract
Sensory gating is the brain's ability to filter out irrelevant information before it reaches high levels of conscious processing. In the current study we aimed to investigate the involvement of the noradrenergic and dopaminergic neurotransmitter systems in sensory gating. Furthermore, we investigated cross-species reliability by comparing effects in both healthy humans and rats, while keeping all experimental conditions as similar as possible between the species. The design of the human experiment (n=21) was a double-blind, placebo-controlled, cross-over study where sensory gating was assessed following a dose of either reboxetine (8 mg), haloperidol (2 mg), their combination or placebo at four separate visits. Similarly in the animal experiment sensory gating was assessed in rats, (n=22) following a dose of reboxetine (2 mg/kg), haloperidol (0.08 mg/kg), their combination or placebo. The sensory gating paradigms in both experiments were identical. In humans, we found significantly reduced P50 suppression following separate administration of reboxetine or haloperidol, while their combined administration did not reach statistical significance compared with placebo. In the rats, we found a similar significant reduction of sensory gating (N40) following treatment with haloperidol and the combination of haloperidol and reboxetine, but not with separate reboxetine treatment, compared with placebo. Our study indicates that even when experimental conditions are kept as similar as possible, direct human to rat cross-species translation of pharmacological effects on sensory gating is challenging, which calls for more focussed research in this important translational area.
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Rosburg T, Sörös P. The response decrease of auditory evoked potentials by repeated stimulation – Is there evidence for an interplay between habituation and sensitization? Clin Neurophysiol 2016; 127:397-408. [DOI: 10.1016/j.clinph.2015.04.071] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2014] [Revised: 04/21/2015] [Accepted: 04/25/2015] [Indexed: 11/30/2022]
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Toyomaki A, Hashimoto N, Kako Y, Tomimatsu Y, Koyama T, Kusumi I. Different P50 sensory gating measures reflect different cognitive dysfunctions in schizophrenia. SCHIZOPHRENIA RESEARCH-COGNITION 2015; 2:166-169. [PMID: 29379766 PMCID: PMC5779302 DOI: 10.1016/j.scog.2015.07.002] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 04/02/2015] [Revised: 07/07/2015] [Accepted: 07/29/2015] [Indexed: 01/24/2023]
Abstract
The P50 is an early component of auditory evoked potentials and a measure of sensory gating deficits. This evoked potential component is thought to be an important endophenotype candidate for schizophrenia. Recent research suggests that instead of the P50 ratio, S1 and S2 amplitudes should be evaluated for sensory gating. However, no studies have focused on the relationship between cognitive dysfunction and P50 sensory gating deficits using S1 and S2 amplitudes. The purpose of the present study was to investigate the association between the P50 ratio (S2/S1), S1 and S2 amplitudes, and neuropsychological cognitive domains using stepwise multiple linear regression analyses. Results demonstrated a significant relationship between executive functioning and the P50 ratio and between sustained attention and S2 amplitude, respectively. Our findings suggest that the P50 ratio and S2 amplitude reflect distinct neurophysiological substrates associated with different cognitive functions.
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Affiliation(s)
- Atsuhito Toyomaki
- Department of Psychiatry, Graduate School of Medicine, Hokkaido University, N15, W7, Sapporo, 060-8638, Japan
| | - Naoki Hashimoto
- Department of Psychiatry, Graduate School of Medicine, Hokkaido University, N15, W7, Sapporo, 060-8638, Japan
| | - Yuki Kako
- Department of Psychiatry, Graduate School of Medicine, Hokkaido University, N15, W7, Sapporo, 060-8638, Japan
| | - Yoshiro Tomimatsu
- Department of Psychiatry, Graduate School of Medicine, Hokkaido University, N15, W7, Sapporo, 060-8638, Japan
| | - Tsukasa Koyama
- Department of Psychiatry, Graduate School of Medicine, Hokkaido University, N15, W7, Sapporo, 060-8638, Japan
| | - Ichiro Kusumi
- Department of Psychiatry, Graduate School of Medicine, Hokkaido University, N15, W7, Sapporo, 060-8638, Japan
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Dalecki A, Johnstone SJ, Croft RJ. Clarifying the functional process represented by P50 suppression. Int J Psychophysiol 2015; 96:149-54. [PMID: 25913093 DOI: 10.1016/j.ijpsycho.2015.04.011] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2015] [Revised: 04/03/2015] [Accepted: 04/20/2015] [Indexed: 01/29/2023]
Abstract
P50 suppression refers to the amplitude-reduction of the P50 event related potential to the second (S2) relative to the first (S1) of identical auditory stimuli presented 500ms apart. Theory suggests that refractory periods (RPs) and/or inhibitory inputs (II) underlie P50 suppression. The present study manipulated interval between stimulus pairs (IPI: 2, 8s) and direction of participants' attention (Attention, Non-Attention) in order to determine which theory best explains P50 suppression. The rationale is that: 1/ RP and II predict opposite effects of manipulating the functionality of the mechanism responsible for S2P50 suppression (e.g. reducing function would increase S2P50 according to the II and decrease S2P50 according to the RP hypothesis); 2/ IPI2 (relative to IPI8) will reduce functionality of the mechanism responsible for S2P50 suppression, as it results in less recovery of (and a greater challenge to) that mechanism - RP would thus predict reduced S2P50, whereas II would predict enhanced S2P50 amplitude; and 3/ where the mechanism responsible for S2P50 suppression is challenged (i.e. at IPI2, due to insufficient recovery), Attention (relative to Non-Attention) will enhance functionality of this mechanism - RP would thus predict increased S2P50, whereas II would predict reduced S2P50 amplitude. In the Non-Attention paradigm, reducing IPI from 8 to 2s tended to increase S2P50 amplitude (and consequently impaired P50 suppression), and in the 2s IPI paradigm, directing attention towards the stimuli reduced S2P50 amplitude (and improved P50 suppression), with both effects supporting the II hypothesis only.
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Affiliation(s)
- Anna Dalecki
- School of Psychology, University of Wollongong, Wollongong, Australia; Illawarra Health and Medical Research Institute, Wollongong, Australia
| | | | - Rodney J Croft
- School of Psychology, University of Wollongong, Wollongong, Australia; Illawarra Health and Medical Research Institute, Wollongong, Australia.
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Andrade GN, Butler JS, Mercier MR, Molholm S, Foxe JJ. Spatio-temporal dynamics of adaptation in the human visual system: a high-density electrical mapping study. Eur J Neurosci 2015; 41:925-39. [PMID: 25688539 DOI: 10.1111/ejn.12849] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2014] [Accepted: 12/31/2014] [Indexed: 11/29/2022]
Abstract
When sensory inputs are presented serially, response amplitudes to stimulus repetitions generally decrease as a function of presentation rate, diminishing rapidly as inter-stimulus intervals (ISIs) fall below 1 s. This 'adaptation' is believed to represent mechanisms by which sensory systems reduce responsivity to consistent environmental inputs, freeing resources to respond to potentially more relevant inputs. While auditory adaptation functions have been relatively well characterized, considerably less is known about visual adaptation in humans. Here, high-density visual-evoked potentials (VEPs) were recorded while two paradigms were used to interrogate visual adaptation. The first presented stimulus pairs with varying ISIs, comparing VEP amplitude to the second stimulus with that of the first (paired-presentation). The second involved blocks of stimulation (N = 100) at various ISIs and comparison of VEP amplitude between blocks of differing ISIs (block-presentation). Robust VEP modulations were evident as a function of presentation rate in the block-paradigm, with strongest modulations in the 130-150 ms and 160-180 ms visual processing phases. In paired-presentations, with ISIs of just 200-300 ms, an enhancement of VEP was evident when comparing S2 with S1, with no significant effect of presentation rate. Importantly, in block-presentations, adaptation effects were statistically robust at the individual participant level. These data suggest that a more taxing block-presentation paradigm is better suited to engage visual adaptation mechanisms than a paired-presentation design. The increased sensitivity of the visual processing metric obtained in the block-paradigm has implications for the examination of visual processing deficits in clinical populations.
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Affiliation(s)
- Gizely N Andrade
- Departments of Pediatrics and Neuroscience, The Sheryl and Daniel R. Tishman Cognitive Neurophysiology Laboratory, Children's Evaluation and Rehabilitation Center (CERC), Albert Einstein College of Medicine, Van Etten Building - Wing 1C, 1225 Morris Park Avenue, Bronx, NY, 10461, USA; Departments of Psychology & Biology, The Graduate Center of the City University of New York, New York, NY, USA
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Thoma RJ, Long J, Monnig M, Yeo RA, Petropoulos H, Gasparovic C, Pommy J, Mullins PG. 1H-MRS glutamate level predicts auditory sensory gating in alcohol dependence: Preliminary results. NEUROPSYCHIATRIC ELECTROPHYSIOLOGY 2015; 1. [PMID: 34012554 PMCID: PMC8130891 DOI: 10.1186/s40810-015-0014-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Background: Impairment in auditory sensory gating (ASG) has been documented in alcohol dependence [1]. Likewise, it has been shown that ASG becomes abnormal during alcohol administration in otherwise healthy individuals [2]. Patterns of gating abnormality associated with alcohol use are likely associated with an alcohol responsive neurochemical like glutamate (Glu), particularly since it is well-established that alcohol affects NMDA receptors and that glutamatergic functioning is abnormal in both acute alcohol use and in alcohol dependence [3]. Hence, a link between Glu metabolite levels and ASG was hypothesized. It was first hypothesized that Glu and ASG abnormality would be found in groups with alcohol dependence. A second hypothesis was that across groups, greater Glu would predict reduced ASG. Methods: Groups were comprised of healthy, non-drinking controls (Controls, N = 4), individuals with current alcohol dependence (AUD-current, N = 6), and with alcohol dependence in remission for at least 1 year (AUD-remission, N = 6). Participants underwent a diagnostic assessment for alcohol consumption, MRI, 1H-MRS for in vivo assessment of Glu and other metabolites, and MEG scanning during a paired click protocol. ASG was computed as the ratio of the source strength of the 50 ms component in the event related field (ERF) to the second click in the pair divided by the source strength of the 50 ms component to the first click in the pair. Results: Univariate MANOVAs controlling for age and gender revealed a significant effect for group on Glu and ASG, such that ASG ratios were significantly elevated, implying weakened gating. Glu concentration was reduced in AUD-current relative to the other two groups. Further analysis revealed that when additionally controlling for the group effect, reduced Glu predicted increasing impairment in ASG. Conclusions: The overall results were consistent with the hypothesis that differences in Glu metabolite levels associated with alcohol dependence result in impaired ASG.
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Affiliation(s)
- Robert J Thoma
- Departments of Psychiatry and Psychology, University of New Mexico, Albuquerque, NM 87131, USA.,Mind Research Network, Albuquerque, 1100 Yale NE, Albuquerque, NM, USA
| | - Jason Long
- Departments of Psychiatry and Psychology, University of New Mexico, Albuquerque, NM 87131, USA
| | - Mollie Monnig
- Departments of Psychiatry and Psychology, University of New Mexico, Albuquerque, NM 87131, USA.,Center for Alcohol and Addiction Studies, Brown University, Box G-S121-5, Providence, RI 02912, USA
| | - Ronald A Yeo
- Departments of Psychiatry and Psychology, University of New Mexico, Albuquerque, NM 87131, USA
| | - Helen Petropoulos
- Departments of Psychiatry and Psychology, University of New Mexico, Albuquerque, NM 87131, USA
| | - Charles Gasparovic
- Departments of Psychiatry and Psychology, University of New Mexico, Albuquerque, NM 87131, USA
| | - Jessica Pommy
- Departments of Psychiatry and Psychology, University of New Mexico, Albuquerque, NM 87131, USA
| | - Paul G Mullins
- Bangor Imaging Unit, School of Psychology, Bangor University, Adeilad Brigantia, Penrallt Road, Bangor LL57 2ASGwynedd, UK
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Gjini K, Qazi A, Greenwald MK, Sandhu R, Gooding DC, Boutros NN. Relationships of behavioral measures of frontal lobe dysfunction with underlying electrophysiology in cocaine-dependent patients. Am J Addict 2014; 23:265-71. [PMID: 24724884 DOI: 10.1111/j.1521-0391.2014.12095.x] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2012] [Revised: 04/29/2013] [Accepted: 06/01/2013] [Indexed: 11/29/2022] Open
Abstract
BACKGROUND AND OBJECTIVES Despite evidence that frontal lobe functioning is impaired in cocaine-dependent individuals, relationships between behavioral measures of frontal dysfunction and electrophysiological measures of inhibition in cocaine use have not been explored. METHODS Using the Frontal Systems Behavior Scale (FrSBe), frontal dysfunction was assessed in a group of abstinent cocaine-dependent subjects (N = 49) and healthy controls (N = 32). Using transcranial magnetic stimulation (TMS) and evoked potential (EP)-based electrophysiological measures of inhibition, we assessed associations between these measures and FrSBe estimates of frontal dysfunction. RESULTS Patients had significantly higher FrSBe scores for executive dysfunction, disinhibition, and apathy than controls. Lower TMS-based resting motor thresholds (ie, hyperexcitability) were significantly associated with higher executive dysfunction scores in the patients. CONCLUSIONS AND SCIENTIFIC SIGNIFICANCE Relationships between FrSBe scores and TMS-based measures highlight neurophysiological aberrations underlying frontal lobe dysfunction in cocaine abusers. TMS and EP measures may be useful probes of the intermediary steps between frontal lobe dysfunction and addictive behavior.
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Affiliation(s)
- Klevest Gjini
- Department of Psychiatry and Behavioral Neurosciences, School of Medicine, Wayne State University, Detroit, Michigan
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Heckman PRA, Blokland A, Ramaekers J, Prickaerts J. PDE and cognitive processing: beyond the memory domain. Neurobiol Learn Mem 2014; 119:108-22. [PMID: 25464010 DOI: 10.1016/j.nlm.2014.10.011] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2014] [Revised: 10/29/2014] [Accepted: 10/30/2014] [Indexed: 01/01/2023]
Abstract
Phosphodiesterase inhibitors (PDE-Is) enhance cAMP and/or cGMP signaling via reducing the degradation of these cyclic nucleotides. Both cAMP and cGMP signaling are essential for a variety of cellular functions and exert their effects both pre- and post-synaptically. Either of these second messengers relays and amplifies incoming signals at receptors on the cell surface making them important elements in signal transduction cascades and essential in cellular signaling in a variety of cell functions including neurotransmitter release and neuroprotection. Consequently, these processes can be influenced by PDE-Is as they increase cAMP and/or cGMP concentrations. PDE-Is have been considered as possible therapeutic agents to treat impaired memory function linked to several brain disorders, including depression, schizophrenia and Alzheimer's disease (AD). This review will, however, focus on the possible role of phosphodiesterases (PDEs) in cognitive decline beyond the memory domain. Here we will discuss the involvement of PDEs on three related domains: attention, information filtering (sensory- and sensorimotor gating) and response inhibition (drug-induced hyperlocomotion). Currently, these are emerging cognitive domains in the field of PDE research. Here we discuss experimental studies and the potential beneficial effects of PDE-I drugs on these cognitive domains, as effects of PDE-Is on these domains could potentially influence effects on memory performance. Overall, PDE4 seems to be the most promising target for all domains discussed in this review.
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Affiliation(s)
- P R A Heckman
- Department of Psychiatry and Neuropsychology, School for Mental Health and Neuroscience, Maastricht University, 6200 MD Maastricht, The Netherlands; Department of Neuropsychology and Psychopharmacology, Maastricht University, 6200 MD Maastricht, The Netherlands
| | - A Blokland
- Department of Neuropsychology and Psychopharmacology, Maastricht University, 6200 MD Maastricht, The Netherlands
| | - J Ramaekers
- Department of Neuropsychology and Psychopharmacology, Maastricht University, 6200 MD Maastricht, The Netherlands
| | - J Prickaerts
- Department of Psychiatry and Neuropsychology, School for Mental Health and Neuroscience, Maastricht University, 6200 MD Maastricht, The Netherlands.
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Nathou C, Etard O, Simon G, Dollfus S. How do high- and low-frequency repetitive transcranial magnetic stimulations modulate the temporal cortex. Psychophysiology 2014; 52:192-8. [PMID: 25223883 DOI: 10.1111/psyp.12323] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2013] [Accepted: 07/30/2014] [Indexed: 11/27/2022]
Abstract
Few studies have examined the impact of repetitive transcranial magnetic stimulation (rTMS) on the cortical excitability of nonmotor cortices; current treatments often target the temporal or prefrontal cortex. We used auditory evoked potentials recorded in 24 healthy subjects to evaluate the neuromodulatory effects of low- and high-frequency rTMS in the temporal lobe. Both auditory evoked potential P50 amplitude, a marker of cortical excitability, and P50 ratio, a marker of sensory gating known to be impaired in patients with auditory verbal hallucinations, were compared before and after rTMS. We observed a similar effect after both stimulation frequencies, with a decrease in P50 amplitude and no significant effect on P50 ratio. Low- and high-frequency rTMS applied to the temporal lobe seemed to exert the same cortical neuromodulation effect, while auditory sensory gating may not be modulated by temporal rTMS.
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Affiliation(s)
- Clement Nathou
- CHU de Caen, Service de psychiatrie, Centre Esquirol, Caen, France; UCBN, UFR de Médecine, Caen, France; CNRS, UMR 6301, ISTCT, ISTS Group, GIP Cyceron, Caen, France
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Peters RM, Gjini K, Templin TN, Boutros NN. A statistical methodology to improve accuracy in differentiating schizophrenia patients from healthy controls. Psychiatry Res 2014; 216:333-9. [PMID: 24613007 DOI: 10.1016/j.psychres.2014.02.020] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/08/2013] [Revised: 02/06/2014] [Accepted: 02/09/2014] [Indexed: 11/29/2022]
Abstract
We present a methodology to statistically discriminate among univariate and multivariate indices to improve accuracy in differentiating schizophrenia patients from healthy controls. Electroencephalogram data from 71 subjects (37 controls/34 patients) were analyzed. Data included P300 event-related response amplitudes and latencies as well as amplitudes and sensory gating indices derived from the P50, N100, and P200 auditory-evoked responses resulting in 20 indices analyzed. Receiver operator characteristic (ROC) curve analyses identified significant univariate indices; these underwent principal component analysis (PCA). Logistic regression of PCA components created a multivariate composite used in the final ROC. Eleven univariate ROCs were significant with area under the curve (AUC) >0.50. PCA of these indices resulted in a three-factor solution accounting for 76.96% of the variance. The first factor was defined primarily by P200 and P300 amplitudes, the second by P50 ratio and difference scores, and the third by P300 latency. ROC analysis using the logistic regression composite resulted in an AUC of 0.793 (0.06), p<0.001 (CI=0.685-0.901). A composite score of 0.456 had a sensitivity of 0.829 (correctly identifying schizophrenia patients) and a specificity of 0.703 (correctly identifying healthy controls). Results demonstrated the usefulness of combined statistical techniques in creating a multivariate composite that improves diagnostic accuracy.
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Affiliation(s)
| | - Klevest Gjini
- Seton Brain and Spine Institute, Austin, TX 78701, USA
| | - Thomas N Templin
- College of Nursing, Wayne State University, Detroit, MI 48202, USA
| | - Nash N Boutros
- Department of Psychiatry and Neuroscience University of Missouri Kansas City, MO 64110, USA
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Cromwell HC, Atchley RM. Influence of emotional states on inhibitory gating: animals models to clinical neurophysiology. Behav Brain Res 2014; 276:67-75. [PMID: 24861710 DOI: 10.1016/j.bbr.2014.05.028] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2014] [Revised: 05/06/2014] [Accepted: 05/08/2014] [Indexed: 10/25/2022]
Abstract
Integrating research efforts using a cross-domain approach could redefine traditional constructs used in behavioral and clinical neuroscience by demonstrating that behavior and mental processes arise not from functional isolation but from integration. Our research group has been examining the interface between cognitive and emotional processes by studying inhibitory gating. Inhibitory gating can be measured via changes in behavior or neural signal processing. Sensorimotor gating of the startle response is a well-used measure. To study how emotion and cognition interact during startle modulation in the animal model, we examined ultrasonic vocalization (USV) emissions during acoustic startle and prepulse inhibition. We found high rates of USV emission during the sensorimotor gating paradigm and revealed links between prepulse inhibition (PPI) and USV emission that could reflect emotional and cognitive influences. Measuring inhibitory gating as P50 event-related potential suppression has also revealed possible connections between emotional states and cognitive processes. We have examined the single unit responses during the traditional gating paradigm and found that acute and chronic stress can alter gating of neural signals in regions such as amygdala, striatum and medial prefrontal cortex. Our findings point to the need for more cross-domain research on how shifting states of emotion can impact basic mechanisms of information processing. Results could inform clinical work with the development of tools that depend upon cross-domain communication, and enable a better understanding and evaluation of psychological impairment.
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Affiliation(s)
- Howard C Cromwell
- Department of Psychology and J.P. Scott Center for Neuroscience, Mind and Behavior at Bowling Green State University, Bowling Green, OH 43403, United States.
| | - Rachel M Atchley
- Department of Psychology and J.P. Scott Center for Neuroscience, Mind and Behavior at Bowling Green State University, Bowling Green, OH 43403, United States
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Ivleva EI, Moates AF, Hamm JP, Bernstein IH, O’Neill HB, Cole D, Clementz BA, Thaker GK, Tamminga CA. Smooth pursuit eye movement, prepulse inhibition, and auditory paired stimuli processing endophenotypes across the schizophrenia-bipolar disorder psychosis dimension. Schizophr Bull 2014; 40:642-52. [PMID: 23599252 PMCID: PMC3984505 DOI: 10.1093/schbul/sbt047] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
BACKGROUND This study examined smooth pursuit eye movement (SPEM), prepulse inhibition (PPI), and auditory event-related potentials (ERP) to paired stimuli as putative endophenotypes of psychosis across the schizophrenia-bipolar disorder dimension. METHODS Sixty-four schizophrenia probands (SZP), 40 psychotic bipolar I disorder probands (BDP), 31 relatives of SZP (SZR), 26 relatives of BDP (BDR), and 53 healthy controls (HC) were tested. Standard clinical characterization, SPEM, PPI, and ERP measures were administered. RESULTS There were no differences between either SZP and BDP or SZR and BDR on any of the SPEM, PPI, or ERP measure. Compared with HC, SZP and BDP had lower SPEM maintenance and predictive pursuit gain and ERP theta/alpha and beta magnitudes to the initial stimulus. PPI did not differ between the psychosis probands and HC. Compared with HC, SZR and BDR had lower predictive pursuit gain and ERP theta/alpha and beta magnitudes to the first stimulus with differences ranging from a significant to a trend level. Neither active symptoms severity nor concomitant medications were associated with neurophysiological outcomes. SPEM, PPI, and ERP scores had low intercorrelations. CONCLUSION These findings support SPEM predictive pursuit and lower frequency auditory ERP activity in a paired stimuli paradigm as putative endophenotypes of psychosis common to SZ and BD probands and relatives. PPI did not differ between the psychosis probands and HC. Future studies in larger scale psychosis family samples targeting putative psychosis endophenotypes and underlying molecular and genetic mediators may aid in the development of biology-based diagnostic definitions.
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Affiliation(s)
- Elena I. Ivleva
- Department of Psychiatry, University of Texas Southwestern Medical Center, Dallas, TX;,*To whom correspondence should be addressed; 6363 Forest Park Road, BL6.106, Dallas, TX 75390-8828, US; tel: 214-648-0843, fax: 214-648-5321, e-mail:
| | - Amanda F. Moates
- Department of Psychiatry, University of Texas Southwestern Medical Center, Dallas, TX
| | - Jordan P. Hamm
- Departments of Psychology and Neuroscience, BioImaging Research Center, University of Georgia, Athens, GA
| | - Ira H. Bernstein
- Department of Clinical Sciences, University of Texas Southwestern Medical Center, Dallas, TX
| | - Hugh B. O’Neill
- Department of Psychiatry, Maryland Psychiatric Research Center, University of Maryland School of Medicine, Baltimore, MD
| | - Darwynn Cole
- Department of Psychiatry, University of Texas Southwestern Medical Center, Dallas, TX
| | - Brett A. Clementz
- Departments of Psychology and Neuroscience, BioImaging Research Center, University of Georgia, Athens, GA
| | - Gunvant K. Thaker
- Department of Psychiatry, Maryland Psychiatric Research Center, University of Maryland School of Medicine, Baltimore, MD
| | - Carol A. Tamminga
- Department of Psychiatry, University of Texas Southwestern Medical Center, Dallas, TX
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Hallucinations and negative symptoms differentially revealed by frontal and temporal responses to speech in schizophrenia. Schizophr Res 2014; 155:39-44. [PMID: 24703528 DOI: 10.1016/j.schres.2014.03.007] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/24/2013] [Revised: 03/10/2014] [Accepted: 03/10/2014] [Indexed: 11/20/2022]
Abstract
BACKGROUND Auditory verbal hallucinations (AVH) in schizophrenia may arise because of aberrant speech perception. We used an electroencephalography method to examine the neural processes underlying speech perception in schizophrenic patients with hallucinations. METHODS Cortical event-related potentials (ERPs) were analyzed topographically (scalp potential and scalp current density (SCD) mapping) in response to the vowel /a/ using a passive paradigm in 26 patients with schizophrenia. RESULTS From the SCD distribution of the P1 peak, we showed that, whereas the hallucination score (PSYRATS) was negatively correlated with the amplitude of the frontal currents, the PANSS negative symptom score was negatively correlated with the amplitude of the temporal currents in patients with schizophrenia. CONCLUSIONS These results provide evidence that AVH and negative symptoms are associated with abnormal early processing of speech. Whereas AVH are related to decreased early frontal activation, negative symptoms are associated with a reduced early temporal response.
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Hamm JP, Ethridge LE, Boutros NN, Keshavan MS, Sweeney JA, Pearlson GD, Tamminga CA, Clementz BA. Diagnostic specificity and familiality of early versus late evoked potentials to auditory paired stimuli across the schizophrenia-bipolar psychosis spectrum. Psychophysiology 2014; 51:348-57. [PMID: 24660885 DOI: 10.1111/psyp.12185] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2013] [Accepted: 11/15/2013] [Indexed: 01/26/2023]
Abstract
Disrupted sensory processing is a core feature of psychotic disorders. Auditory paired stimuli (PS) evoke a complex neural response, but it is uncertain which aspects reflect shared and/or distinct liability for the most common severe psychoses, schizophrenia (SZ) and psychotic bipolar disorder (BDP). Evoked time-voltage/time-frequency domain responses quantified with EEG during a typical PS paradigm (S1-S2) were compared among proband groups (SZ [n = 232], BDP [181]), their relatives (SZrel [259], BDPrel [220]), and healthy participants (H [228]). Early S1-evoked responses were reduced in SZ and BDP, while later/S2 abnormalities showed SZ/SZrel and BDP/BDPrel specificity. Relatives' effects were absent/small despite significant familiality of the entire auditorineural response. This pattern suggests general and divergent biological pathways associated with psychosis, yet may reflect complications with conditioning solely on clinical phenomenology.
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Affiliation(s)
- Jordan P Hamm
- Department of Psychology, BioImaging Research Center, University of Georgia, Athens, Georgia, USA; Department of Neuroscience, BioImaging Research Center, University of Georgia, Athens, Georgia, USA
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Orekhova EV, Stroganova TA. Arousal and attention re-orienting in autism spectrum disorders: evidence from auditory event-related potentials. Front Hum Neurosci 2014; 8:34. [PMID: 24567709 PMCID: PMC3915101 DOI: 10.3389/fnhum.2014.00034] [Citation(s) in RCA: 63] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2013] [Accepted: 01/17/2014] [Indexed: 01/16/2023] Open
Abstract
The extended phenotype of autism spectrum disorders (ASD) includes a combination of arousal regulation problems, sensory modulation difficulties, and attention re-orienting deficit. A slow and inefficient re-orienting to stimuli that appear outside of the attended sensory stream is thought to be especially detrimental for social functioning. Event-related potentials (ERPs) and magnetic fields (ERFs) may help to reveal which processing stages underlying brain response to unattended but salient sensory event are affected in individuals with ASD. Previous research focusing on two sequential stages of the brain response-automatic detection of physical changes in auditory stream, indexed by mismatch negativity (MMN), and evaluation of stimulus novelty, indexed by P3a component,-found in individuals with ASD either increased, decreased, or normal processing of deviance and novelty. The review examines these apparently conflicting results, notes gaps in previous findings, and suggests a potentially unifying hypothesis relating the dampened responses to unattended sensory events to the deficit in rapid arousal process. Specifically, "sensory gating" studies focused on pre-attentive arousal consistently demonstrated that brain response to unattended and temporally novel sound in ASD is already affected at around 100 ms after stimulus onset. We hypothesize that abnormalities in nicotinic cholinergic arousal pathways, previously reported in individuals with ASD, may contribute to these ERP/ERF aberrations and result in attention re-orienting deficit. Such cholinergic dysfunction may be present in individuals with ASD early in life and can influence both sensory processing and attention re-orienting behavior. Identification of early neurophysiological biomarkers for cholinergic deficit would help to detect infants "at risk" who can potentially benefit from particular types of therapies or interventions.
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Affiliation(s)
- Elena V Orekhova
- MEG Centre, Moscow State University of Psychology and Education Moscow, Russia ; MedTech West, Sahlgrenska Academy Gothenburg, Sweden
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Galderisi S, Vignapiano A, Mucci A, Boutros NN. Physiological correlates of positive symptoms in schizophrenia. Curr Top Behav Neurosci 2014; 21:103-28. [PMID: 24920446 DOI: 10.1007/7854_2014_322] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
Patients with schizophrenia have been hypothesized to have a functional impairment in filtering irrelevant sensory information, which may result in positive symptoms such as hallucinations or delusions. Many evidences suggest that abnormalities in the event-related brain potentials (ERPs), resting state electroencephalography (EEG) and synchronized oscillatory activity of neurons may reflect core pathophysiological mechanisms of schizophrenia. Abnormalities in amplitude and latency of the ERPs reflecting aberrations in gating and difficulties in the detection of changes in auditory stimuli, as well as defects in stimuli evaluation and integration of information are common in patients with schizophrenia. This chapter highlights the findings of electrophysiological studies in schizophrenia dealing with early sensory perception and attention, automatic sensory detection of stimuli changes and cognitive evaluation and integration of information, relevant to the pathophysiological mechanisms underpinning hallucinations and delusions. Results of electrophysiological studies investigating the neural correlates of positive symptoms suggest aberrant intrinsic organization of functional brain networks.
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Affiliation(s)
- Silvana Galderisi
- Department of Psychiatry, University of Naples SUN, Largo Madonna delle Grazie, 80138, Naples, NA, Italy,
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Wang Y, Feng Y, Jia Y, Wang W, Xie Y, Guan Y, Zhong S, Zhu D, Huang L. Auditory M50 and M100 sensory gating deficits in bipolar disorder: a MEG study. J Affect Disord 2014; 152-154:131-8. [PMID: 24021957 DOI: 10.1016/j.jad.2013.08.010] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/10/2013] [Revised: 08/12/2013] [Accepted: 08/12/2013] [Indexed: 11/18/2022]
Abstract
OBJECTIVES Auditory sensory gating deficits have been reported in subjects with bipolar disorder, but the hemispheric and neuronal origins of this deficit are not well understood. Moreover, gating of the auditory evoked components reflecting early attentive stage of information processing has not been investigated in bipolar disorder. The objectives of this study were to investigate the right and left hemispheric auditory sensory gating of the M50 (preattentive processing) and M100 (early attentive processing) in patients diagnosed with bipolar I disorder by utilizing magnetoencephalography (MEG). METHODS Whole-head MEG data were acquired during the standard paired-click paradigm in 20 bipolar I disorder patients and 20 healthy controls. The M50 and the M100 responses were investigated, and dipole source localizations were also investigated. Sensory gating were determined by measuring the strength of the M50 and the M100 response to the second click divided by that of the first click (S2/S1). RESULTS In every subject, M50 and M100 dipolar sources localized to the left and right posterior portion of superior temporal gyrus (STG). Bipolar I disorder patients showed bilateral gating deficits in M50 and M100. The bilateral M50 S2 source strengths were significantly higher in the bipolar I disorder group compared to the control group. LIMITATIONS The sample size was relatively small. More studies with larger sample sizes are warranted. Bipolar subjects were taking a wide range of medications that could not be readily controlled for. CONCLUSIONS These findings suggest that bipolar I disorder patients have auditory gating deficits at both pre-attentive and early attentive levels, which might be related to STG structural abnormality.
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Affiliation(s)
- Ying Wang
- Medical Imaging Center, First Affiliated Hospital of Jinan University, Guangzhou 510630, China; Clinical Experimental Center, First Affiliated Hospital of Jinan University, Guangzhou 510630, China
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Vlcek P, Bob P, Raboch J. Sensory disturbances, inhibitory deficits, and the P50 wave in schizophrenia. Neuropsychiatr Dis Treat 2014; 10:1309-15. [PMID: 25075189 PMCID: PMC4106969 DOI: 10.2147/ndt.s64219] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/23/2023] Open
Abstract
Sensory gating disturbances in schizophrenia are often described as an inability to filter redundant sensory stimuli that typically manifest as inability to gate neuronal responses related to the P50 wave, characterizing a decreased ability of the brain to inhibit various responses to insignificant stimuli. It implicates various deficits of perceptual and attentional functions, and this inability to inhibit, or "gate", irrelevant sensory inputs leads to sensory and information overload that also may result in neuronal hyperexcitability related to disturbances of habituation mechanisms. These findings seem to be particularly important in the context of modern electrophysiological and neuroimaging data suggesting that the filtering deficits in schizophrenia are likely related to deficits in the integrity of connections between various brain areas. As a consequence, this brain disintegration produces disconnection of information, disrupted binding, and disintegration of consciousness that in terms of modern neuroscience could connect original Bleuler's concept of "split mind" with research of neural information integration.
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Affiliation(s)
- Premysl Vlcek
- Center for Neuropsychiatric Research of Traumatic Stress, Department of Psychiatry and UHSL, First Faculty of Medicine, Charles University, Prague, Czech Republic
| | - Petr Bob
- Center for Neuropsychiatric Research of Traumatic Stress, Department of Psychiatry and UHSL, First Faculty of Medicine, Charles University, Prague, Czech Republic ; Central European Institute of Technology (CEITEC), Masaryk University, Brno, Czech Republic
| | - Jiri Raboch
- Center for Neuropsychiatric Research of Traumatic Stress, Department of Psychiatry and UHSL, First Faculty of Medicine, Charles University, Prague, Czech Republic
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Gooding DC, Gjini K, Burroughs SA, Boutros NN. The association between psychosis proneness and sensory gating in cocaine-dependent patients and healthy controls. Psychiatry Res 2013; 210:1092-100. [PMID: 24064464 PMCID: PMC3840098 DOI: 10.1016/j.psychres.2013.08.049] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/23/2012] [Revised: 08/29/2013] [Accepted: 08/29/2013] [Indexed: 11/15/2022]
Abstract
This was a naturalistic study of 23 abstinent cocaine-dependent patients and 38 controls who were studied using a paired-stimulus paradigm to elicit three mid-latency auditory evoked responses (MLAERs), namely, the P50, N100, and P200. Sensory gating was defined as the ratio of the S2 amplitude to the S1 amplitude. Psychosis-proneness was assessed using four Chapman psychosis proneness scales measuring perceptual aberration, magical ideation, social anhedonia, and physical anhedonia. Omnibus correlations based upon the entire sample revealed significant and differential relationships between the MLAER components and psychosis-proneness. Social Anhedonia scale scores accounted for the largest proportion of variance in the P50 gating ratio, while Perceptual Aberration scores accounted for the largest proportion of variance in P200 gating. Psychosis proneness and sensory gating appear to be associated. In particular, poorer P50 gating is related to higher scores on the Social Anhedonia scale in healthy controls and across mixed samples of cocainede-pendent patients and controls. These findings hold significance for the further understanding of the relationship between deficient sensory gating ability and the propensity to developing psychotic symptoms in a vulnerable population like cocaine-dependent individuals.
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Affiliation(s)
- Diane C Gooding
- University of Wisconsin-Madison, Department of Psychology, 1202 West Johnson Street, Madison, WI 53706, United States; University of Wisconsin-Madison Department of Psychiatry, Madison, WI, United States.
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Thwaites SJ, Gogos A, Van den Buuse M. Schizophrenia-like disruptions of sensory gating by serotonin receptor stimulation in rats: Effect of MDMA, DOI and 8-OH-DPAT. Pharmacol Biochem Behav 2013; 112:71-7. [DOI: 10.1016/j.pbb.2013.09.016] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/27/2013] [Revised: 09/23/2013] [Accepted: 09/28/2013] [Indexed: 11/27/2022]
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50
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Gjini K, Boutros NN, Haddad L, Aikins D, Javanbakht A, Amirsadri A, Tancer ME. Evoked potential correlates of post-traumatic stress disorder in refugees with history of exposure to torture. J Psychiatr Res 2013; 47:1492-8. [PMID: 23835042 DOI: 10.1016/j.jpsychires.2013.06.007] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/01/2013] [Revised: 06/12/2013] [Accepted: 06/14/2013] [Indexed: 10/26/2022]
Abstract
The presence and magnitude of information processing deviations associated with Post-Traumatic Stress Disorder (PTSD) are far from being well-characterized. In this study we assessed the auditory and visually evoked cerebral responses in a group of Iraqi refugees who were exposed to torture and developed PTSD (N = 20), Iraqi refugees who had been exposed to similar trauma but did not develop PTSD (N = 20), and non-traumatized controls matched for age, gender, and ethnicity (N = 20). We utilized two paired-stimulus paradigms in auditory and visual sensory modalities, respectively. We found significantly smaller amplitudes of both the auditory P50 and the visual N75 responses in PTSD patients compared to controls, reflecting decreased response to simple sensory input during a relatively early phase of information processing (interval 50-75 ms post stimulus). In addition, deficient suppression of the P50/N75 response to repeating stimuli at this early stage in both modalities is indicative of difficulty in filtering out irrelevant sensory input. Among associations between electrophysiological and clinical measures, a significant positive correlation was found between dissociation score and P50 S1 amplitudes (p = 0.024), as well as stronger auditory P50 gating correlated with higher quality-of-life index scores (p = 0.013). In addition, smaller amplitudes of N150 visual evoked response to S1 showed a significant association with higher avoidance scores (p = 0.015). The results of this study highlight the importance of early automatic auditory and visual evoked responses in probing the information processing and neural mechanisms underlying symptomatology in PTSD.
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Affiliation(s)
- Klevest Gjini
- Department of Psychiatry and Behavioral Neurosciences, Wayne State University, School of Medicine, Clinical Electrophysiology Lab, Detroit, MI 48201, USA.
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