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Hua JPY, Cummings J, Roach BJ, Fryer SL, Loewy RL, Stuart BK, Ford JM, Vinogradov S, Mathalon DH. Rich-club connectivity and structural connectome organization in youth at clinical high-risk for psychosis and individuals with early illness schizophrenia. Schizophr Res 2023; 255:110-121. [PMID: 36989668 PMCID: PMC10705845 DOI: 10.1016/j.schres.2023.03.016] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/14/2022] [Revised: 11/07/2022] [Accepted: 03/08/2023] [Indexed: 03/31/2023]
Abstract
Brain dysconnectivity has been posited as a biological marker of schizophrenia. Emerging schizophrenia connectome research has focused on rich-club organization, a tendency for brain hubs to be highly-interconnected but disproportionately vulnerable to dysconnectivity. However, less is known about rich-club organization in individuals at clinical high-risk for psychosis (CHR-P) and how it compares with abnormalities early in schizophrenia (ESZ). Combining diffusion tensor imaging (DTI) and magnetic resonance imaging (MRI), we examined rich-club and global network organization in CHR-P (n = 41) and ESZ (n = 70) relative to healthy controls (HC; n = 74) after accounting for normal aging. To characterize rich-club regions, we examined rich-club MRI morphometry (thickness, surface area). We also examined connectome metric associations with symptom severity, antipsychotic dosage, and in CHR-P specifically, transition to a full-blown psychotic disorder. ESZ had fewer connections among rich-club regions (ps < .024) relative to HC and CHR-P, with this reduction specific to the rich-club even after accounting for other connections in ESZ relative to HC (ps < .048). There was also cortical thinning of rich-club regions in ESZ (ps < .013). In contrast, there was no strong evidence of global network organization differences among the three groups. Although connectome abnormalities were not present in CHR-P overall, CHR-P converters to psychosis (n = 9) had fewer connections among rich-club regions (ps < .037) and greater modularity (ps < .037) compared to CHR-P non-converters (n = 19). Lastly, symptom severity and antipsychotic dosage were not significantly associated with connectome metrics (ps < .012). Findings suggest that rich-club and connectome organization abnormalities are present early in schizophrenia and in CHR-P individuals who subsequently transition to psychosis.
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Affiliation(s)
- Jessica P Y Hua
- Sierra Pacific Mental Illness Research Education and Clinical Centers, San Francisco VA Medical Center and the University of California, San Francisco, CA, USA; San Francisco VA Medical Center, San Francisco, CA 94121, USA; Department of Psychiatry and Behavioral Sciences, University of California San Francisco, San Francisco, CA 94143, USA; Department of Psychological Sciences, University of Missouri, Columbia, MO 65211, USA
| | - Jennifer Cummings
- Department of Radiology and Biomedical Imaging, University of California San Francisco, San Francisco, CA 94143, USA; Department of Bioengineering and Therapeutic Sciences, University of California San Francisco, San Francisco, CA 94143, USA
| | - Brian J Roach
- San Francisco VA Medical Center, San Francisco, CA 94121, USA
| | - Susanna L Fryer
- San Francisco VA Medical Center, San Francisco, CA 94121, USA
| | - Rachel L Loewy
- Department of Psychiatry and Behavioral Sciences, University of California San Francisco, San Francisco, CA 94143, USA
| | - Barbara K Stuart
- Department of Psychiatry and Behavioral Sciences, University of California San Francisco, San Francisco, CA 94143, USA
| | - Judith M Ford
- San Francisco VA Medical Center, San Francisco, CA 94121, USA; Department of Psychiatry and Behavioral Sciences, University of California San Francisco, San Francisco, CA 94143, USA
| | - Sophia Vinogradov
- Department of Psychiatry and Behavioral Sciences, University of Minnesota, Minneapolis, MN 55455, USA
| | - Daniel H Mathalon
- San Francisco VA Medical Center, San Francisco, CA 94121, USA; Department of Psychiatry and Behavioral Sciences, University of California San Francisco, San Francisco, CA 94143, USA.
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2
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Associations between acceptance of the implausible bias, theory of mind and delusions in first-episode psychosis patients; A longitudinal study. Schizophr Res 2023; 254:27-34. [PMID: 36774695 DOI: 10.1016/j.schres.2023.02.001] [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: 12/01/2021] [Revised: 10/14/2022] [Accepted: 02/02/2023] [Indexed: 02/12/2023]
Abstract
Multiple different cognitive biases, among them the liberal acceptance (LA) bias, have been suggested to contribute to reality distortion in psychotic disorders. Earlier studies have been cross-sectional and considered a limited set of cognitive correlates of psychosis, thus the relationship between LA bias and psychosis remains poorly known. We studied a similar bias (acceptance of the implausible (AOI)) in 62 first-episode psychosis (FEP) patients and 62 control subjects, who watched movie scenes with varying degrees of realism and were asked to evaluate the probability of these events occurring in real life. We assessed theory of mind (ToM) performance using the Hinting task and delusion severity using Brief Psychiatric Rating Scale item 11. We correlated the magnitude of AOI with the severity of delusions and performance in the ToM task. Furthermore, we used 1-year follow-up data from 40 FEP patients and 40 control subjects to disentangle state vs trait-like characteristics of AOI. At baseline FEP patients expressed more AOI than control subjects, and the magnitude of AOI correlated positively with the severity of delusions and negatively with ToM performance. At the one-year follow-up, when most patients were in remission, patients still displayed increased AOI, which no longer correlated with delusions. These findings support the notion that the AOI bias could represent a trait rather than a state feature and support further studies to test the hypothesis that it could be one of the causal factors of psychotic disorders, possibly associated with ToM.
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Raucher-Chéné D, Lavigne KM, Lepage M. Episodic Memory and Schizophrenia: From Characterization of Relational Memory Impairments to Neuroimaging Biomarkers. Curr Top Behav Neurosci 2022; 63:115-136. [PMID: 35902545 DOI: 10.1007/7854_2022_379] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Episodic memory research in schizophrenia has a long history already which has clearly established significant impairments and strong associations with brain measures and functional outcome. The purpose of this chapter is not to make an exhaustive review of the recent literature but to highlight some relatively recent developments in the cognitive neuroscience field of episodic memory and schizophrenia. Hence, we present a contemporary view focusing specifically of relational memory which represents a form of episodic memory that refers to associations or binding among items or elements presented together. We describe the major tasks used and illustrate how their combination with brain imaging has: (1) favored the use of experimental memory tasks to isolate specific processes with specific neural correlates, (2) led to a distributed view of the neural correlates of memory impairments in schizophrenia where multiple regions are contributing, and (3) made possible the identification of fMRI biomarkers specific to episodic memory. We then briefly propose what we see as the next steps for memory research in schizophrenia so that the impact of this work can be maximized.
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Affiliation(s)
- Delphine Raucher-Chéné
- Cognition, Health, and Society Laboratory (EA 6291), University of Reims Champagne-Ardenne, Reims, France.,Academic Department of Psychiatry, University Hospital of Reims, EPSM Marne, Reims, France
| | - Katie M Lavigne
- Douglas Research Centre, Verdun, QC, Canada.,Department of Psychiatry, McGill University, Montréal, QC, Canada.,McGill Centre for Integrative Neuroscience, Montreal Neurological Institute, McGill University, Montreal, Canada
| | - Martin Lepage
- Douglas Research Centre, Verdun, QC, Canada. .,Department of Psychiatry, McGill University, Montréal, QC, Canada.
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Raucher-Chéné D, Lavigne KM, Makowski C, Lepage M. Altered Surface Area Covariance in the Mentalizing Network in Schizophrenia: Insight Into Theory of Mind Processing. BIOLOGICAL PSYCHIATRY. COGNITIVE NEUROSCIENCE AND NEUROIMAGING 2022; 7:706-715. [PMID: 32919946 DOI: 10.1016/j.bpsc.2020.06.020] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/27/2020] [Revised: 06/29/2020] [Accepted: 06/30/2020] [Indexed: 06/11/2023]
Abstract
BACKGROUND Theory of mind (ToM), the cognitive capacity to attribute mental states to self and others, is robustly affected in schizophrenia. The neural substrates of ToM impairment have been largely studied with functional imaging, but little is known about structural abnormalities. We compared structural covariance (between-subjects correlations of brain regional measures) of magnetic resonance imaging-based cortical surface area between patients with schizophrenia and healthy control subjects and between schizophrenia subgroups based on the patients' ToM ability to examine ToM-specific effects on structural covariance in schizophrenia. METHODS T1-weighted structural images were acquired on a 3T magnetic resonance imaging scanner, and ToM was assessed with the Hinting Task for 104 patients with schizophrenia and 69 healthy control subjects. The sum of surface area was computed for 12 regions of interest selected and compared between groups to examine structural covariance within the often reported mentalizing network: rostral and caudal middle frontal gyrus, inferior parietal lobule, precuneus, and middle and superior temporal gyrus. High and low ToM groups were defined using a median split on the Hinting Task. RESULTS Cortical surface contraction was observed in the schizophrenia group, predominantly in temporoparietal regions. Patients with schizophrenia also exhibited significantly stronger covariance between the right rostral middle frontal gyrus and the right superior temporal gyrus than control subjects (r = 4.015; p < .001). Direct comparisons between high and low ToM subgroups revealed stronger contralateral frontotemporal covariances in the low ToM group. CONCLUSIONS Our results provide evidence for structural changes underlying ToM impairments in schizophrenia that need to be confirmed to develop new therapeutic perspectives.
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Affiliation(s)
- Delphine Raucher-Chéné
- Douglas Mental Health University Institute, McGill University, Montreal, Quebec, Canada; Cognition, Health, and Society Laboratory EA 6291, University of Reims Champagne-Ardenne, Reims, France; Academic Department of Psychiatry, University Hospital of Reims, Etablissement Public de Santé Mentale de la Marne, Reims, France
| | - Katie M Lavigne
- Douglas Mental Health University Institute, McGill University, Montreal, Quebec, Canada; McGill Centre for Integrative Neuroscience, Montreal Neurological Institute, McGill University, Montreal, Quebec, Canada
| | - Carolina Makowski
- Center for Multimodal Imaging and Genetics, University of California, San Diego School of Medicine, La Jolla, California; Department of Radiology, University of California, San Diego School of Medicine, La Jolla, California
| | - Martin Lepage
- Douglas Mental Health University Institute, McGill University, Montreal, Quebec, Canada; Department of Psychiatry, McGill University, Montreal, Quebec, Canada.
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5
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Raucher-Chéné D, Thibaudeau E, Sauvé G, Lavigne KM, Lepage M. Understanding others as a mediator between verbal memory and negative symptoms in schizophrenia-spectrum disorder. J Psychiatr Res 2021; 143:429-435. [PMID: 34656875 DOI: 10.1016/j.jpsychires.2021.10.007] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/18/2021] [Revised: 10/05/2021] [Accepted: 10/10/2021] [Indexed: 11/17/2022]
Abstract
From the onset of schizophrenia, verbal memory (VM) deficits and negative symptoms are strongly associated, and both additively predict functional outcomes. Emotion recognition (ER) and theory of mind (ToM; the ability to infer others' mental states), two components of social cognition, are also particularly affected in schizophrenia. Explanatory models of negative symptoms have integrated these cognitive impairments as potential precursors and previous studies revealed relationships between ER and/or ToM and VM, as well as with negative symptoms, but the organization of these associations remains unclear. We aimed to determine whether impairments in VM and social cognition sequentially pave the way for negative symptoms in schizophrenia. To this end, we used mediation analyses. One hundred and forty participants with a diagnosis of schizophrenia or schizoaffective disorder were recruited. First, correlational analyses were conducted between our variables of interest. The mediating effect of social cognition between VM and negative symptoms was then examined using the PROCESS macro. Variables of interest were significantly correlated (r = |0.166| to |0.391|), except for ER and negative symptoms. Only the serial multiple mediation model with 2 mediators (ER followed by ToM) revealed a significant indirect effect of VM on negative symptoms (β = - 0.160, 95% CI = -.370 to -.004). This relationship was selective for expressive negative symptoms (e.g., blunted affect and alogia). This study illustrates the richness of the relationship between cognitive deficits and negative symptoms and provides additional information for the involvement of social cognition in negative symptoms' etiology.
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Affiliation(s)
- Delphine Raucher-Chéné
- Douglas Mental Health University Institute, Montreal, Canada; Department of Psychiatry, McGill University, Montreal, Canada; Cognition, Health, and Society Laboratory (EA 6291), University of Reims Champagne-Ardenne, Reims, France; Academic Department of Psychiatry, University Hospital of Reims, EPSM Marne, Reims, France
| | - Elisabeth Thibaudeau
- Douglas Mental Health University Institute, Montreal, Canada; Department of Psychiatry, McGill University, Montreal, Canada; Department of Education and Pedagogy, Université du Québec À Montréal, Canada
| | - Geneviève Sauvé
- Douglas Mental Health University Institute, Montreal, Canada; Department of Education and Pedagogy, Université du Québec À Montréal, Canada
| | - Katie M Lavigne
- Douglas Mental Health University Institute, Montreal, Canada; Department of Psychiatry, McGill University, Montreal, Canada; McGill Centre for Integrative Neuroscience, Montreal Neurological Institute, McGill University, Montreal, Canada
| | - Martin Lepage
- Douglas Mental Health University Institute, Montreal, Canada; Department of Psychiatry, McGill University, Montreal, Canada.
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Myznikov A, Zheltyakova M, Korotkov A, Kireev M, Masharipov R, Jagmurov OD, Habel U, Votinov M. Neuroanatomical Correlates of Social Intelligence Measured by the Guilford Test. Brain Topogr 2021; 34:337-347. [PMID: 33866460 PMCID: PMC8099826 DOI: 10.1007/s10548-021-00837-1] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2020] [Accepted: 03/30/2021] [Indexed: 02/07/2023]
Abstract
Social interactions are a crucial aspect of human behaviour. Numerous neurophysiological studies have focused on socio-cognitive processes associated with the so-called theory of mind-the ability to attribute mental states to oneself and others. Theory of mind is closely related to social intelligence defined as a set of abilities that facilitate effective social interactions. Social intelligence encompasses multiple theory of mind components and can be measured by the Four Factor Test of Social Intelligence (the Guilford-Sullivan test). However, it is unclear whether the differences in social intelligence are reflected in structural brain differences. During the experiment, 48 healthy right-handed individuals completed the Guilford-Sullivan test. T1-weighted structural MRI images were obtained for all participants. Voxel-based morphometry analysis was performed to reveal grey matter volume differences between the two groups (24 subjects in each)-with high social intelligence scores and with low social intelligence scores, respectively. Participants with high social intelligence scores had larger grey matter volumes of the bilateral caudate. The obtained results suggest the caudate nucleus involvement in the neural system of socio-cognitive processes, reflected by its structural characteristics.
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Affiliation(s)
- A Myznikov
- N.P. Bechtereva Institute of Human Brain Russian Academy of Science, Saint-Petersburg, Russia
| | - M Zheltyakova
- N.P. Bechtereva Institute of Human Brain Russian Academy of Science, Saint-Petersburg, Russia
| | - A Korotkov
- N.P. Bechtereva Institute of Human Brain Russian Academy of Science, Saint-Petersburg, Russia
| | - M Kireev
- N.P. Bechtereva Institute of Human Brain Russian Academy of Science, Saint-Petersburg, Russia
- Saint Petersburg State University, Saint-Petersburg, Russia
| | - R Masharipov
- N.P. Bechtereva Institute of Human Brain Russian Academy of Science, Saint-Petersburg, Russia
| | - O Dz Jagmurov
- N.P. Bechtereva Institute of Human Brain Russian Academy of Science, Saint-Petersburg, Russia
| | - U Habel
- Institute of Neuroscience and Medicine 10, Research Centre Jülich, Jülich, Germany
- Department of Psychiatry, Psychotherapy and Psychosomatics, Medical Faculty, RWTH Aachen University, Aachen, Germany
| | - M Votinov
- N.P. Bechtereva Institute of Human Brain Russian Academy of Science, Saint-Petersburg, Russia.
- Institute of Neuroscience and Medicine 10, Research Centre Jülich, Jülich, Germany.
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7
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García-Fernández L, Cabot-Ivorra N, Romero-Ferreiro V, Pérez-Martín J, Rodriguez-Jimenez R. Differences in theory of mind between early and chronic stages in schizophrenia. J Psychiatr Res 2020; 127:35-41. [PMID: 32460156 DOI: 10.1016/j.jpsychires.2020.05.009] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/27/2020] [Revised: 05/04/2020] [Accepted: 05/11/2020] [Indexed: 01/01/2023]
Abstract
The evolution of social cognition throughout the course of schizophrenia is unclear not being possible to state whether it remains stable from early stages to chronicity, or it changes as the disease develops. For this purpose, 90 patients with schizophrenia and 139 healthy controls have been compared establishing 4 different groups paired by age and gender: first episode of psychosis patients (FEP), young healthy controls (YHC), chronic patients with schizophrenia (CS) and adult healthy controls (AHC). Performance in Theory of Mind (ToM) has been assessed using The Hinting Task and The Reading the Mind in the Eyes Test (RMET). In the Hinting Task, when comparing patients with their respective control group, differences found between CS patients and their corresponding controls (p < .001) are much bigger (almost twice) than differences between FEP patients and young controls (p = .001). In fact, young and adult healthy controls did not significantly differ in their scores, while the CS group showed significant worse performance than the FEP group. In the Reading the Mind in the Eyes test (RMET), patients globally performed worse than controls (p < .001). However, the Cohort × Diagnosis interaction was not significant (p = .27). In this task, there were no differences between CS and FEP scores. In conclusion, data suggest poor performance in all phases of the disease with a probable worsening related to chronicity especially in the aspects of social cognition measured by the Hinting Task.
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Affiliation(s)
- Lorena García-Fernández
- Department of Clinical Medicine, Universidad Miguel Hernández, Edificio Muhammad Al-Shafra, Campus de San Juan, Ctra. de Valencia, Km 87, 03550, San Juan, Alicante, Spain; Department of Psychiatry, Hospital Universitario de San Juan, Alicante. Ctra. Nacional. 332, S/n, 03550, San Juan, Alicante, Spain; CIBERSAM (Biomedical Research Networking Centre in Mental Health), Spain.
| | - Nuria Cabot-Ivorra
- Doctoral School, Universidad Católica de Valencia San Vicente Mártir, C/ Guillem de Castro, 65 bajo, 46008, Valencia, Spain.
| | - Verónica Romero-Ferreiro
- CIBERSAM (Biomedical Research Networking Centre in Mental Health), Spain; Brain Mapping Unit, Instituto Pluridisciplinar, Complutense University of Madrid, Paseo Juan XXIII, 1, 28040, Madrid, Spain; Department of Psychiatry, Instituto de Investigación Sanitaria Hospital 12 de Octubre (imas 12), Av. Córdoba S/n, 28041, Madrid, Spain.
| | - Jorge Pérez-Martín
- Department of Psychiatry, Hospital Universitario de San Juan, Alicante. Ctra. Nacional. 332, S/n, 03550, San Juan, Alicante, Spain.
| | - Roberto Rodriguez-Jimenez
- CIBERSAM (Biomedical Research Networking Centre in Mental Health), Spain; Department of Psychiatry, Instituto de Investigación Sanitaria Hospital 12 de Octubre (imas 12), Av. Córdoba S/n, 28041, Madrid, Spain; CogPsy-Group. Universidad Complutense (UCM), Madrid, Spain.
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8
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Quidé Y, Wilhelmi C, Green MJ. Structural brain morphometry associated with theory of mind in bipolar disorder and schizophrenia. Psych J 2019; 9:234-246. [DOI: 10.1002/pchj.322] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2019] [Revised: 09/04/2019] [Accepted: 09/30/2019] [Indexed: 11/06/2022]
Affiliation(s)
- Yann Quidé
- School of Psychiatry University of New South Wales Sydney Australia
- Neuroscience Research Australia Randwick Australia
| | | | - Melissa J. Green
- School of Psychiatry University of New South Wales Sydney Australia
- Neuroscience Research Australia Randwick Australia
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Bartholomeusz CF, Ganella EP, Whittle S, Allott K, Thompson A, Abu-Akel A, Walter H, McGorry P, Killackey E, Pantelis C, Wood SJ. An fMRI study of theory of mind in individuals with first episode psychosis. Psychiatry Res Neuroimaging 2018; 281:1-11. [PMID: 30212786 DOI: 10.1016/j.pscychresns.2018.08.011] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/14/2018] [Revised: 08/16/2018] [Accepted: 08/16/2018] [Indexed: 12/19/2022]
Abstract
Theory of mind (ToM), the ability to infer one's own and others' mental states, is the social cognitive process shown to have the greatest impact on functional outcome in schizophrenia. It is not yet known if neural abnormalities underlying ToM present early, during the first episode of psychosis (FEP). Fourteen FEP participants and twenty-two healthy control participants, aged 15-25, were included in analyses. All participants had a 3T magnetic resonance imaging scan and completed a block-design picture-story attribution-of-intentions ToM fMRI task, and completed a battery of behavioral social cognitive measures including a ToM task. General linear model analyses were carried out. Post-hoc regression analyses were conducted to explore whether aberrant ToM-related activation in FEP participants was associated with symptomatology and global social and occupational functioning. FEP participants, when compared to healthy controls, had significantly less activity in the right temporoparietal junction, right orbitofrontal cortex and left middle prefrontal/inferior frontal cortex, when making social attributions. Aberrant ToM-related activation in the right temporoparietal junction was associated with severity of overall psychopathology, but not functional outcome. Specific regions of the social brain network, associated with ToM, are dysfunctional in young people with FEP. Future research should determine whether alteration of normal brain functioning in relation to ToM occurs before or during illness onset.
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Affiliation(s)
- Cali F Bartholomeusz
- Orygen, The National Centre of Excellence in Youth Mental Health, 35 Poplar Road, Parkville 3053, Victoria, Australia; The Centre for Youth Mental Health, The University of Melbourne, Victoria, Australia; Melbourne Neuropsychiatry Centre, Department of Psychiatry, The University of Melbourne, Victoria, Australia.
| | - Eleni P Ganella
- Orygen, The National Centre of Excellence in Youth Mental Health, 35 Poplar Road, Parkville 3053, Victoria, Australia; The Centre for Youth Mental Health, The University of Melbourne, Victoria, Australia; Melbourne Neuropsychiatry Centre, Department of Psychiatry, The University of Melbourne, Victoria, Australia
| | - Sarah Whittle
- Melbourne Neuropsychiatry Centre, Department of Psychiatry, The University of Melbourne, Victoria, Australia
| | - Kelly Allott
- Orygen, The National Centre of Excellence in Youth Mental Health, 35 Poplar Road, Parkville 3053, Victoria, Australia; The Centre for Youth Mental Health, The University of Melbourne, Victoria, Australia
| | - Andrew Thompson
- Division of Mental Health and Wellbeing, Warwick Medical School, University of Warwick, Coventry, United Kingdom
| | - Ahmad Abu-Akel
- Institute of Psychology, University of Lausanne, Lausanne, Switzerland
| | - Henrik Walter
- Division of Mind and Brain Research, Department of Psychiatry and Psychotherapy CCM, Charité - Berlin University of Medicine, corporate member of Free University of Berlin, Humboldt University of Berlin, and Berlin Institute of Health, Berlin, Germany
| | - Patrick McGorry
- Orygen, The National Centre of Excellence in Youth Mental Health, 35 Poplar Road, Parkville 3053, Victoria, Australia; The Centre for Youth Mental Health, The University of Melbourne, Victoria, Australia
| | - Eóin Killackey
- Orygen, The National Centre of Excellence in Youth Mental Health, 35 Poplar Road, Parkville 3053, Victoria, Australia; The Centre for Youth Mental Health, The University of Melbourne, Victoria, Australia
| | - Christos Pantelis
- Melbourne Neuropsychiatry Centre, Department of Psychiatry, The University of Melbourne, Victoria, Australia; Centre for Neural Engineering (CfNE), Department of Electrical and Electronic Engineering, University of Melbourne, Carlton South, Victoria, Australia; Florey Institute for Neuroscience & Mental Health, Parkville, Victoria, Australia
| | - Stephen J Wood
- Orygen, The National Centre of Excellence in Youth Mental Health, 35 Poplar Road, Parkville 3053, Victoria, Australia; The Centre for Youth Mental Health, The University of Melbourne, Victoria, Australia; School of Psychology, University of Birmingham, Birmingham, United Kingdom
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10
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Cacciotti-Saija C, Langdon R, Ward PB, Hickie IB, Guastella AJ. Clinical symptoms predict concurrent social and global functioning in an early psychosis sample. Early Interv Psychiatry 2018; 12:177-184. [PMID: 26626426 DOI: 10.1111/eip.12295] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/18/2015] [Accepted: 10/22/2015] [Indexed: 11/30/2022]
Abstract
AIM Although well established in chronic schizophrenia, the key determinants of functioning remain unknown during the early phase of a psychotic disorder. The aim of this study was to comprehensively examine the social cognitive, basic neurocognitive and clinical predictors of concurrent social functioning and global functioning in an early psychosis sample. METHODS This study examined the relationship between social cognition, basic neurocognition and clinical symptoms with concurrent functioning in 51 early psychosis individuals. Assessments included a range of self-report, observational and clinician-rated measures of cognitive, symptom severity and functioning domains. RESULTS Results revealed a significant association between self-reported social function and lower levels of both social interaction anxiety and negative psychotic symptoms. A significant association was also observed between lower levels of negative psychotic symptoms and observed social functioning. Lastly, results demonstrated a significant association between reduced negative psychotic symptoms and clinician-rated global functioning. CONCLUSIONS Clinical domains such as negative symptoms and social interaction anxiety significantly contribute to an optimal model predicting outcome during the early phase of a psychotic disorder. These clinical features may also provide useful markers of an individual's capacity for social participation. Clinical implications include the need for early targeted intervention to address social anxiety and negative psychotic symptoms to facilitate optimum patient outcome.
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Affiliation(s)
| | - Robyn Langdon
- ARC Centre of Excellence in Cognition and Its Disorders (CCD), Macquarie University, Sydney, New South Wales, Australia
| | - Philip B Ward
- Schizophrenia Research Unit, South Western Sydney Local Health District, University of New South Wales, Sydney, New South Wales, Australia
| | - Ian B Hickie
- Brain and Mind Centre, The University of Sydney, Sydney, New South Wales, Australia
| | - Adam J Guastella
- Brain and Mind Centre, The University of Sydney, Sydney, New South Wales, Australia
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Pina-Camacho L, Parellada M, Kyriakopoulos M. Autism spectrum disorder and schizophrenia: boundaries and uncertainties. BJPSYCH ADVANCES 2018. [DOI: 10.1192/apt.bp.115.014720] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
SummaryAutism and schizophrenia were placed in different diagnostic categories in DSM-III, having previously been considered as related diagnostic entities. New evidence suggests that these disorders show clinical and cognitive deficit overlaps and shared neurobiological characteristics. Furthermore, children presenting with both autism spectrum disorder (ASD) and psychotic experiences may represent a subgroup of ASD more closely linked to psychosis. The study of ASD and childhood schizophrenia, and their clinical boundaries and overlapping pathophysiological characteristics, may clarify their relationship and lead to more effective interventions. This article discusses the relationship through a critical review of current and historical dilemmas surrounding the phenomenology and pathophysiology of these disorders. It provides a framework for working with children and young people with mixed clinical presentations, illustrated by three brief fictional case vignettes.
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12
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Maat A, van Haren NEM, Bartholomeusz CF, Kahn RS, Cahn W. Emotion recognition and theory of mind are related to gray matter volume of the prefrontal cortex in schizophrenia. Eur Neuropsychopharmacol 2016; 26:255-264. [PMID: 26711688 DOI: 10.1016/j.euroneuro.2015.12.013] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/27/2015] [Revised: 11/23/2015] [Accepted: 12/01/2015] [Indexed: 11/17/2022]
Abstract
Investigations of social cognition in schizophrenia have demonstrated consistent impairments compared to healthy controls. Functional imaging studies in schizophrenia patients and healthy controls have revealed that social cognitive processing depends critically on the amygdala and the prefrontal cortex (PFC). However, the relationship between social cognition and structural brain abnormalities in these regions in schizophrenia patients is less well understood. Measures of facial emotion recognition and theory of mind (ToM), two key social cognitive abilities, as well as face perception and IQ, were assessed in 166 patients with schizophrenia and 134 healthy controls. MRI brain scans were acquired. Automated parcellation of the brain to determine gray matter volume of the amygdala and the superior, middle, inferior and orbital PFC was performed. Between-group analyses showed poorer recognition of angry faces and ToM performance, and decreased amygdala and PFC gray matter volumes in schizophrenia patients as compared to healthy controls. Moreover, in schizophrenia patients, recognition of angry faces was associated with inferior PFC gray matter volume, particularly the pars triangularis (p=0.006), with poor performance being related to reduced pars triangularis gray matter volume. In addition, ToM ability was related to PFC gray matter volume, particularly middle PFC (p=0.001), in that poor ToM skills in schizophrenia patients were associated with reduced middle PFC gray matter volume. In conclusion, reduced PFC, but not amygdala, gray matter volume is associated with social cognitive deficits in schizophrenia.
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Affiliation(s)
- Arija Maat
- Department of Psychiatry, Waterland Ziekenhuis, Waterlandlaan 250, 1441 RN Purmerend, The Netherlands
| | - Neeltje E M van Haren
- Department of Psychiatry, University Medical Center Utrecht - Brain Center Rudolf Magnus, Huispostnummer A 00.241, Postbus 85500, 3508 GA Utrecht, The Netherlands
| | - Cali F Bartholomeusz
- Melbourne Neuropsychiatry Center, Department of Psychiatry, The University of Melbourne and Melbourne Health, 161 Barry Street, Carlton South, Victoria 3053, Australia
| | - René S Kahn
- Department of Psychiatry, University Medical Center Utrecht - Brain Center Rudolf Magnus, Huispostnummer A 00.241, Postbus 85500, 3508 GA Utrecht, The Netherlands
| | - Wiepke Cahn
- Department of Psychiatry, University Medical Center Utrecht - Brain Center Rudolf Magnus, Huispostnummer A 00.241, Postbus 85500, 3508 GA Utrecht, The Netherlands.
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13
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Bartholomeusz CF, Ganella EP, Labuschagne I, Bousman C, Pantelis C. Effects of oxytocin and genetic variants on brain and behaviour: Implications for treatment in schizophrenia. Schizophr Res 2015; 168:614-27. [PMID: 26123171 DOI: 10.1016/j.schres.2015.06.007] [Citation(s) in RCA: 43] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/19/2015] [Revised: 05/25/2015] [Accepted: 06/07/2015] [Indexed: 12/13/2022]
Abstract
Impairments in social cognition and poor social functioning are core features of schizophrenia-spectrum disorders. In recent years, there has been a move towards developing new treatment strategies that specifically target social cognitive and social behavioural deficits. Oxytocin (OXT) is one such strategy that has gained increasing attention. There is a strong rationale for studying OXT in psychosis, from both an evolutionary perspective and neurodevelopmental-cognitive model of schizophrenia. Thus, the aim of this review was to critique and examine the observational and clinical oxytocin trial literature in schizophrenia-spectrum disorders. A handful of clinical trials suggest that OXT treatment may be beneficial for remediating social cognitive impairments, psychiatric symptoms, and improving social outcomes. However, inconsistencies exist in this literature, which may be explained by individual differences in the underlying neural response to OXT treatment and/or variation in the oxytocin and oxytocin receptor genes. Therefore, we additionally reviewed the evidence for structural and functional neural intermediate phenotypes in humans that link genetic variants to social behaviour/thinking, and discuss the implications of such interactions in the context of dysfunctional brain networks in schizophrenia. Factors that pose challenges for future OXT clinical research include the impact of age, sex, and ancestry, task-specific effects, bioavailability and pharmacokinetics, as well as neurotransmitter and drug interactions. While initial findings from OXT single dose/clinical trial studies are promising, more interdisciplinary research in both healthy and psychiatric populations is needed before determining whether OXT is a viable treatment option/adjunct for addressing poor illness outcomes in psychotic disorders.
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Affiliation(s)
- Cali F Bartholomeusz
- Orygen, The National Centre of Excellence in Youth Mental Health and the Centre for Youth Mental Health, The University of Melbourne, Parkville, Victoria, Australia; Melbourne Neuropsychiatry Centre, Department of Psychiatry, The University of Melbourne & Melbourne Health, Carlton South, Victoria, Australia.
| | - Eleni P Ganella
- Orygen, The National Centre of Excellence in Youth Mental Health and the Centre for Youth Mental Health, The University of Melbourne, Parkville, Victoria, Australia; Melbourne Neuropsychiatry Centre, Department of Psychiatry, The University of Melbourne & Melbourne Health, Carlton South, Victoria, Australia
| | - Izelle Labuschagne
- School of Psychology, Australian Catholic University, Fitzroy, Victoria, Australia
| | - Chad Bousman
- Melbourne Neuropsychiatry Centre, Department of Psychiatry, The University of Melbourne & Melbourne Health, Carlton South, Victoria, Australia; Florey Institute for Neuroscience and Mental Health, Parkville, Victoria, Australia
| | - Christos Pantelis
- Melbourne Neuropsychiatry Centre, Department of Psychiatry, The University of Melbourne & Melbourne Health, Carlton South, Victoria, Australia; Florey Institute for Neuroscience and Mental Health, Parkville, Victoria, Australia
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14
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Tseng CEJ, Chien YL, Liu CM, Wang HLS, Hwu HG, Tseng WYI. Altered cortical structures and tract integrity of the mirror neuron system in association with symptoms of schizophrenia. Psychiatry Res 2015; 231:286-91. [PMID: 25659475 DOI: 10.1016/j.pscychresns.2015.01.010] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/06/2014] [Revised: 10/17/2014] [Accepted: 01/11/2015] [Indexed: 11/26/2022]
Abstract
The mirror neuron system (MNS) may be implicated in schizophrenia. This study investigated MNS structures, including the pars opercularis (Pop), the supramarginal gyrus (SMg), the third branch of the superior longitudinal fasciculus, and callosal fibers interconnecting bilateral Pop (CC-Pop) and SMg (CC-SMg), and clarified their relationships with positive and negative symptoms of schizophrenia. Participants comprised 32 schizophrenia patients and 32 matched controls who received T1-weighted structural magnetic resonance imaging (MRI, T1WI) and diffusion spectrum imaging (DSI). The cortical measures were computed from the T1WI data. Tract integrity was assessed using a tractography-based analysis of the generalized fractional anisotropy (GFA) derived from the DSI data. Pearson׳s correlations and multiple linear regression analysis were used to investigate the associations between MNS structures and positive and negative symptom scores of schizophrenia. Cortical thickness in bilateral Pop and SMg were significantly thinner and mean GFA of CC-Pop was significantly decreased in patients. Negative symptoms were significantly correlated with left SMg volume, and positive symptoms were significantly correlated with right SMg thickness. Multiple linear regression analysis showed left SMg volume to be the strongest contributor to the negative symptoms. The association between left SMg volume and negative symptoms may reflect the degree of social cognition impairment in schizophrenia.
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Affiliation(s)
- Chieh-En Jane Tseng
- Center for Optoelectronic Medicine, National Taiwan University College of Medicine, Taipei, Taiwan
| | - Yi-Ling Chien
- Department of Psychiatry, National Taiwan University Hospital, Taipei, Taiwan
| | - Chih-Min Liu
- Department of Psychiatry, National Taiwan University Hospital, Taipei, Taiwan
| | - Hsiao-Lan Sharon Wang
- Center for Optoelectronic Medicine, National Taiwan University College of Medicine, Taipei, Taiwan
| | - Hai-Gwo Hwu
- Department of Psychiatry, National Taiwan University Hospital, Taipei, Taiwan; Graduate Institute of Brain and Mind Sciences, National Taiwan University College of Medicine, Taipei, Taiwan.
| | - Wen-Yih Isaac Tseng
- Center for Optoelectronic Medicine, National Taiwan University College of Medicine, Taipei, Taiwan; Graduate Institute of Brain and Mind Sciences, National Taiwan University College of Medicine, Taipei, Taiwan; Department of Medical Imaging, National Taiwan University Hospital, Taipei, Taiwan; Molecular Imaging Center, National Taiwan University, Taipei, Taiwan.
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15
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Mirror neuron dysfunction in schizophrenia and its functional implications: a systematic review. Schizophr Res 2014; 160:9-19. [PMID: 25468183 PMCID: PMC6284797 DOI: 10.1016/j.schres.2014.10.040] [Citation(s) in RCA: 64] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/01/2014] [Revised: 09/19/2014] [Accepted: 10/28/2014] [Indexed: 12/25/2022]
Abstract
Dysfunctional mirror neuron activity (MNA) has been posited to underlie diverse symptoms of schizophrenia (e.g., ego-boundary disturbances, negative symptoms, social cognition impairments and catatonic symptoms). In this paper, we systematically review studies that have empirically compared putative MNA in schizophrenia patients and healthy subjects using different neurophysiological probes. Majority of the studies (n=9) reported reduced MNA in patients. Two each reported either increased MNA or mixed (both increased and decreased) results, while only one study reported normal findings. Reduced MNA was associated with greater negative symptoms and theory of mind deficits. The neurophysiological technique, task paradigms used, specific brain regions studied and laterality did not influence these findings. Further, we propose an overarching model to understand the heterogeneous symptom dimensions of schizophrenia, in which an inherent mirror system deficit underlying persistent negative symptoms, social cognition impairments and self-monitoring deficits triggers a pathological metaplastic reorganization of this system resulting in aberrant excessive MNA and the phasic catatonic symptoms, affective instability and hallucinations. Despite being preliminary in nature, evidence of abnormal MNA in schizophrenia reported necessitates more detailed investigation. Future research directions of using this model within the Research Domain Criteria framework of the National Institute of Mental Health are discussed.
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Rigucci S, Rossi-Espagnet C, Ferracuti S, De Carolis A, Corigliano V, Carducci F, Mancinelli I, Cicone F, Tatarelli R, Bozzao A, Girardi P, Comparelli A. Anatomical substrates of cognitive and clinical dimensions in first episode schizophrenia. Acta Psychiatr Scand 2013; 128:261-70. [PMID: 23216145 DOI: 10.1111/acps.12051] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 10/26/2012] [Indexed: 11/29/2022]
Abstract
OBJECTIVE To explore gray (GM) and white matter (WM) abnormalities and the relationships with neuropsychopathology in first-episode schizophrenia (FES). METHOD Nineteen patients with first episode of non-affective psychosis and 18 controls underwent a magnetic resonance voxel-based morphometry. Additionally, WM fractional anisotropy (FA) was calculated. For correlative analysis, symptoms and neuropsychological performances were scored by PANSS and by a comprehensive neuropsychological assessment respectively. RESULTS Patients showed significantly decreased volume of left temporal lobe and disarray of all major WM tracts. Disorganized PANSS factor was inversely related to left cerebellar GM volume (corrected P = 0.03) and to WM FA of the left cerebellum, inferior fronto-occipital fasciculi (IFOF), and inferior longitudinal fasciculi (corrected P < 0.05). PANSS negative factor was inversely related to FA in the IFOF and superior longitudinal fasciculi (corrected P < 0.05). Impairment in facial emotion identification showed associations with temporo-occipital GM volume decrease (corrected P = 0.003) and WM disarray of superior and middle temporal gyri, anterior thalamic radiation, and superior longitudinal fasciculi (corrected P < 0.05). Speed of processing and visual memory correlated with WM abnormalities in fronto-temporal tracts. CONCLUSION These results confirm how the structural development of key brain regions is related to neuropsychopathological dysfunction in FES, consistently with a neurodevelopmentally derived misconnection syndrome.
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Affiliation(s)
- S Rigucci
- Unit of Psychiatry, Sant'Andrea Hospital, Department of Neurosciences, Mental Health and Sensory Organs (Ne.S.M.O.S.), Faculty of Medicine and Psychology, Sapienza University of Rome, Rome, Italy
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17
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McCormick LM, Brumm MC, Beadle JN, Paradiso S, Yamada T, Andreasen N. Mirror neuron function, psychosis, and empathy in schizophrenia. Psychiatry Res 2012; 201:233-9. [PMID: 22510432 PMCID: PMC3545445 DOI: 10.1016/j.pscychresns.2012.01.004] [Citation(s) in RCA: 88] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/26/2011] [Revised: 01/07/2012] [Accepted: 01/09/2012] [Indexed: 11/25/2022]
Abstract
Processing of social and emotional information has been shown to be disturbed in schizophrenia. The biological underpinnings of these abnormalities may be explained by an abnormally functioning mirror neuron system. Yet the relationship between mirror neuron system activity in schizophrenia, as measured using an electroencephalography (EEG) paradigm, and socio-emotional functioning has not been assessed. The present research measured empathy and mirror neuron activity using an established EEG paradigm assessing the integrity of the Mu rhythm (8-13Hz) suppression over the sensorimotor cortex during observed and actual hand movement in 16 schizophrenia-spectrum disorder (SSD) participants (n=8 actively psychotic and n=8 in residual illness phase) and 16 age- and gender-matched healthy comparison participants. Actively psychotic SSD participants showed significantly greater mu suppression over the sensorimotor cortex of the left hemisphere than residual phase SSD and healthy comparison individuals. The latter two groups showed similar levels of mu suppression. Greater left-sided mu suppression was positively correlated with psychotic symptoms (i.e., greater mu suppression/mirror neuron activity was highest among subjects with the greater severity of psychotic symptoms). SSD subjects tended to have significantly higher levels of Personal Distress (as measured by the Interpersonal Reactivity Index) than healthy participants. The present study suggests that abnormal mirror neuron activity may exist among patients with schizophrenia during the active (psychotic) phase of the illness, and correlates with severity of psychosis.
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Affiliation(s)
- Laurie M. McCormick
- Department of Psychiatry, University of Iowa Carver College of Medicine, Iowa City, IA, USA
,Corresponding author. Department of Psychiatry, Psychiatric Iowa Neuroimaging Consortium, Roy J. and Lucille A. Carver College of Medicine, University of Iowa Hospitals and Clinics, 200 Hawkins Drive, W278 GH, Iowa City, IA 52242-1057, USA. Tel.: +1 319 384 7136; fax: +1 319 384 5532.
| | - Michael C. Brumm
- Department of Psychiatry, University of Iowa Carver College of Medicine, Iowa City, IA, USA
| | - Janelle N. Beadle
- Department of Psychiatry, University of Iowa Carver College of Medicine, Iowa City, IA, USA
| | - Sergio Paradiso
- Department of Psychiatry, University of Iowa Carver College of Medicine, Iowa City, IA, USA
| | - Thoru Yamada
- Department of Neurology, University of Iowa Carver College of Medicine, Iowa City, IA, USA
| | - Nancy Andreasen
- Department of Psychiatry, University of Iowa Carver College of Medicine, Iowa City, IA, USA
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18
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Brunet-Gouet E, Achim AM, Vistoli D, Passerieux C, Hardy-Baylé MC, Jackson PL. The study of social cognition with neuroimaging methods as a means to explore future directions of deficit evaluation in schizophrenia? Psychiatry Res 2011; 190:23-31. [PMID: 21185085 DOI: 10.1016/j.psychres.2010.11.029] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/20/2010] [Revised: 11/12/2010] [Accepted: 11/27/2010] [Indexed: 11/27/2022]
Abstract
This article discusses the important advances in a recent field of science dealing with the brain processes implicated in understanding social situations and interacting with others. Many behavioral studies on schizophrenia have shown the impairment of these processes and their preferential relation with disorganization and negative syndromes. Brain imaging is a powerful method to identify brain systems participating in these processes in healthy subjects and will be used increasingly to study mental disorders such as schizophrenia. A few preliminary studies have opened this field of research and allowed for the drawing of some limited conclusions. We emphasize the importance of developing an integrated neurocognitive framework to account for the multifaceted nature of social cognition deficits in schizophrenia. Inspired by contemporary models of empathy and social cognition that identify different components such as shared representation, mentalizing, self/other distinction, we show how schizophrenia affects these components at the behavioral and functional levels. We also outline the interest of this model to understand putative abnormalities of contextual integration within the area of mentalization. Finally, we discuss how specialized measures of brain functions during the performance of these precisely defined mental processes might be used as outcome predictors.
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Affiliation(s)
- Eric Brunet-Gouet
- EA 4047, Université de Versailles Saint-Quentin, Service de Psychiatrie Adulte, Centre Hospitalier de Versailles, Fondation FondaMental, 177 route de Versailles, 78150 Le Chesnay, France.
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Van den Stock J, de Jong SJ, Hodiamont PPG, de Gelder B. Perceiving emotions from bodily expressions and multisensory integration of emotion cues in schizophrenia. Soc Neurosci 2011; 6:537-47. [DOI: 10.1080/17470919.2011.568790] [Citation(s) in RCA: 38] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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20
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Thompson AD, Bartholomeusz C, Yung AR. Social cognition deficits and the 'ultra high risk' for psychosis population: a review of literature. Early Interv Psychiatry 2011; 5:192-202. [PMID: 21726422 DOI: 10.1111/j.1751-7893.2011.00275.x] [Citation(s) in RCA: 55] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
AIM A number of risk factors for developing a psychotic disorder have been investigated in the 'ultra high risk' (UHR) population, including neurocognitive abilities, social functioning and, more recently, social cognition. We aimed to review the literature on social cognition in the UHR population. METHODS Literature was restricted to English articles and identified using Pubmed, Medline, PsychINFO and CINAHLplus, as well as the reference lists of published studies and reviews. Search terms included social cognition, theory of mind, emotion recognition, attributional style, social knowledge, social perception, 'at risk mental state', psychosis prodrome 'clinical high risk' and 'ultra high risk'. Inclusion criteria were an outcome measure of a social cognition task and an UHR population defined by a structured validated instrument. RESULTS Seven original research articles met the inclusion criteria, one of which was a conference abstract. One of the two studies that assessed theory of mind, two of the four studies that assessed emotion recognition and both the two studies that assessed social perception/knowledge found significant deficits in UHR patients. The single study that assessed attributional bias also reported differences in UHR patients compared with healthy controls. CONCLUSIONS There is limited published literature on social cognitive performance in the UHR population. Despite this, deficits in certain social cognitive abilities do appear to be present, but further research with more reliable cross-cultural measures is needed. The characterization of social cognitive deficits in the UHR populations may aid in the identification of potential markers for development of a subsequent psychotic disorder, as well as targets for early intervention.
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Affiliation(s)
- Andrew D Thompson
- Orygen Youth Health and Research Centre, Centre for Adolescent Mental Health, Victoria, Australia.
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21
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Keshavan MS, Eack SM, Wojtalik JA, Prasad KMR, Francis AN, Bhojraj TS, Greenwald DP, Hogarty SS. A broad cortical reserve accelerates response to cognitive enhancement therapy in early course schizophrenia. Schizophr Res 2011; 130:123-9. [PMID: 21645997 PMCID: PMC3209759 DOI: 10.1016/j.schres.2011.05.001] [Citation(s) in RCA: 71] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/08/2011] [Revised: 04/28/2011] [Accepted: 05/01/2011] [Indexed: 01/31/2023]
Abstract
OBJECTIVES Cognitive rehabilitation can improve cognition in schizophrenia and prevent disability. It is unknown, however, whether a greater neurobiologic reserve, as measured by cortical volumes, will predict a favorable response to rehabilitation. We investigated this question in early course schizophrenia patients treated with Cognitive Enhancement Therapy (CET). METHODS Outpatients in the early course of schizophrenia or schizoaffective disorder were randomly assigned to CET (n=29) or an Enriched Supportive Therapy control (n=21) and treated for two years. Cortical surface area and gray matter volume data were collected before treatment using structural magnetic resonance imaging. Neurocognition and social cognition were assessed before, and after one and two years of treatment. Moderator analyses examined the impact of pre-treatment cortical surface area and gray matter volume on differential neurocognitive and social-cognitive response to CET. RESULTS Pre-treatment, whole brain cortical surface area and gray matter volume significantly moderated the effects of CET on social cognition, but not neurocognition. Greater neurobiologic reserve predicted a rapid social-cognitive response to CET in the first year of treatment; patients with less neurobiologic reserve achieved a comparable social-cognitive response by the second year. While nearly every regional measurement significantly contributed to this accelerated social-cognitive treatment response, effects were the strongest in the temporal cortex. CONCLUSIONS A broad cortical surface area and gray matter reserve is associated with an accelerated social-cognitive response to CET in early schizophrenia, yet the benefits of cognitive rehabilitation are achieved in those with less initial cognitive resources after a longer duration of treatment.
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Affiliation(s)
- Matcheri S Keshavan
- Beth Israel Deaconess Medical Center and Harvard Medical School, Boston, MA 02215, USA.
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Catalucci A, Mazza M, Ciutti E, Caulo M, Pollice R, Roncone R, Casacchia M, Di Salle F, Gallucci M. Neuronal Basis of Haedonic Appraisal in Early Onset Schizophrenia: fMRI Investigation. Neuroradiol J 2011; 24:264-70. [DOI: 10.1177/197140091102400216] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2010] [Accepted: 01/03/2011] [Indexed: 11/16/2022] Open
Abstract
The most important symptoms associated with schizophrenia are affective flattening, decreased expression of emotions, anhedonia and social isolation. The purpose of the present study was to investigate the neural response to disgusting and pleasant visual stimuli in healthy subjects and in patients with first-episode schizophrenia. Twelve subjects in the first episode of schizophrenia (DSM-IV-R, APA, 2000) with a normal IQ and 12 healthy volunteers selected for age and education underwent functional magnetic resonance imaging (fMRI) during observation of pleasant and disgusting visual stimuli. Analysis showed that in healthy subjects, the prefrontal cortex and limbic areas are activated in response to pleasant and disgusting visual stimuli, whereas this does not occur in subjects with schizophrenia since the first episode of illness.
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Affiliation(s)
- A. Catalucci
- Department of Neuroradiology, “S. Salvatore” Hospital, University of L'Aquila; L'Aquila, Italy
| | - M. Mazza
- Department of Health Science, University of L'Aquila; L'Aquila, Italy
| | - E. Ciutti
- Department of Radiology, University of L'Aquila; L'Aquila, Italy
| | - M. Caulo
- Institute for Advanced Biomedical Technologies, University of Chieti; Chieti, Italy
| | - R. Pollice
- Department of Health Science, University of L'Aquila; L'Aquila, Italy
| | - R. Roncone
- Department of Health Science, University of L'Aquila; L'Aquila, Italy
| | - M. Casacchia
- Department of Health Science, University of L'Aquila; L'Aquila, Italy
| | - F. Di Salle
- Faculty of Psychology and Neuroscience, University of Maastricht; Maastricht, The Netherlands
| | - M. Gallucci
- Department of Neuroradiology, “S. Salvatore” Hospital, University of L'Aquila; L'Aquila, Italy
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23
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King BH, Lord C. Is schizophrenia on the autism spectrum? Brain Res 2010; 1380:34-41. [PMID: 21078305 DOI: 10.1016/j.brainres.2010.11.031] [Citation(s) in RCA: 167] [Impact Index Per Article: 11.9] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2010] [Revised: 10/31/2010] [Accepted: 11/07/2010] [Indexed: 12/31/2022]
Abstract
With the ongoing consideration of the diagnostic criteria for mental disorders that is active in the Diagnostic and Statistical Manual of Mental Disorders (DSM-V) and International Classification of Diseases (ICD-11) revision processes, it is timely to review the phenomenological overlap between autism and schizophrenia. These disorders have at various times been regarded alternatively as closely related and as non-overlapping and incompatible. Nevertheless, there are several reports in the literature that have described individuals with both autism and schizophrenia, and the broader phenotypes of these disorders clearly intersect. Recent studies reveal theory of mind deficits in both disorders, and mirror neuron impairments also appear to be shared. There also may be similar connectivity deficits emerging in functional imaging studies, and both disorders share several genetic signals that are being identified through detection of copy number variants. Taken together, these data suggest that it may be time to revisit the possibility that these disorders are related.
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Affiliation(s)
- Bryan H King
- University of Washington and Seattle Children's Autism Center, Seattle, WA 98105, USA.
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Montreuil T, Bodnar M, Bertrand MC, Malla AK, Joober R, Lepage M. Social cognitive markers of short-term clinical outcome in first-episode psychosis. ACTA ACUST UNITED AC 2010; 4:105-14. [PMID: 20643633 DOI: 10.3371/csrp.4.2.2] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
OBJECTIVE In psychotic disorders, impairments in cognition have been associated with both clinical and functional outcome, while deficits in social cognition have been associated with functional outcome. As an extension to a recent report on neurocognition and short-term clinical outcome in first-episode psychosis (FEP), the current study explored whether social cognitive deficits could also identify poor short-term clinical outcome among FEP patients. METHODS We defined the social-cognition domain based on the scores from the Hinting Task and the Four Factor Tests of Social Intelligence. Data were collected in 45 FEP patients and 26 healthy controls. The patients were divided into good- and poor-outcome groups based on clinical data at six months following initiation of treatment. Social cognition was compared among 27 poor-outcome, 18 good-outcome, and 26 healthy-control participants. RESULTS Outcome groups significantly differed in the social cognition domain (z-scores: poor outcome=-2.0 [SD=1.4]; good outcome=-1.0 [SD=1.0]; p=0.005), with both groups scoring significantly lower than the control group (p<0.003). Moreover, outcome groups differed significantly only on the Cartoon Predictions subtest (z-scores: poor outcome=-2.7 [SD=2.7]; good outcome=-0.7 [SD=1.8]; p=0.001) among the five subtests used. CONCLUSIONS Overall, social cognition appears to be compromised in all FEP patients compared to healthy controls. More interestingly, significant differences in social cognitive impairments exist between good and poor short-term clinical outcome groups, with the largest effect found in the Cartoon Predictions subtest.
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Affiliation(s)
- Tina Montreuil
- Prevention and Early Intervention Program for Psychoses (PEPP-Montreal), Douglas Mental Health University Institute, Montreal, Canada
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Abstract
Emotional facial expressions evoke rapid, involuntary, and covert facial reactions in the perceiver that are consistent with the emotional valence of the observed expression. These responses are believed to be an important low-level mechanism contributing to the experience of empathy, which some have argued rely on a simulation mechanism subserved by the human mirror neuron system (MNS). Because schizophrenia is associated with pervasive social cognitive difficulties which have been linked to structural abnormalities in the MNS network, the aim of the present study was to provide the first assessment of how rapid facial mimicry reactions (within 1000 ms poststimulus onset) are affected in schizophrenia. Activity in the corrugator supercilii and zygomaticus major muscle regions was quantified using electromyography while individuals with schizophrenia (n = 25) and controls (n = 25) viewed images of happy and angry facial expressions. In contrast to controls, individuals with schizophrenia demonstrated atypical facial mimicry reactions which were not associated with any clinical features of the disorder. These data provide evidence for a low-level disruption that may be contributing to empathizing deficits in schizophrenia and are discussed in relation to neuropsychological models of empathy and schizophrenia.
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An MRI study of the superior temporal subregions in first-episode patients with various psychotic disorders. Schizophr Res 2009; 113:158-66. [PMID: 19615864 DOI: 10.1016/j.schres.2009.06.016] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/11/2009] [Revised: 06/15/2009] [Accepted: 06/22/2009] [Indexed: 11/23/2022]
Abstract
Morphologic abnormalities of the superior temporal gyrus (STG) have been reported in schizophrenia, but have not been extensively studied in other psychotic disorders such as affective psychosis. In the present study, magnetic resonance imaging was used to examine the volumes of the STG and its subregions [planum polare (PP), Heschl gyrus (HG), planum temporale (PT), rostral STG, and caudal STG] in 162 first-episode patients with various psychotic disorders [46 schizophrenia (31 schizophrenia and 15 schizoaffective disorder), 57 schizophreniform disorder, 34 affective psychosis, and 25 other psychoses] and 62 age- and sex-matched healthy controls. The first-episode schizophrenia patients had significantly less gray matter in HG, PT, and caudal STG bilaterally compared with all other groups, but there was no difference between the controls and affective psychosis, schizophreniform disorder, or other psychoses for any STG subregion. The STG white matter volume did not differ between groups. Our findings indicate that morphologic abnormalities of the STG gray matter are specific to schizophrenia among various psychotic disorders, implicating its role in the underlying pathophysiology of schizophrenia.
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