Fronto-temporal dysfunction in schizophrenia: A selective review.
- Authors
- John, John P
- Year
- 2009
- Journal
- Indian journal of psychiatry
- PMID
- 19881045
- DOI
- 10.4103/0019-5545.55084
- PMCID
- PMC2772233
Schizophrenia is conceptualized as a disorder of aberrant neurodevelopment, with evident stigmata such as minor physical anomalies (MPA), neurological soft signs (NSS), and abnormalities of brain structure and function, proposed as disease endophenotypes. We have examined the neurobiology of schizophrenia using neurodevelopmental markers, structural MRI (sMRI), EEG spectral power, and coherence as well as neuropsychological testing in neuroleptic-naïve, recent-onset schizophrenia (NRS) subjects. It has been our focus to link the positive and negative symptom dimensions of schizophrenia with their underlying neural correlates specifically reflecting fronto-temporal circuitry dysfunction. We found that MPAs and NSSs constituted independent neurodevelopmental markers of schizophrenia and would afford greater predictive validity when used as a composite endophenotype. In an exploratory factor analytic study of the dimensionality of psychopathology, we noted that the symptoms segregated into three dimensions, viz., positive, negative, and disorganization, even in NRS subjects. Executive function tests as well as EEG spectral power and coherence studies revealed that the symptom dimensions of schizophrenia could be linked to specific neural correlates. In an attempt to study the relationship between the symptom dimensions and brain structure and function using MRI, we have proposed neuroanatomical definitions with cytoarchitectonic meaning for parcellation of the prefrontal sub-divisions. Using sMRI, we have found specific corpus callosal abnormalities that possibly link the temporo-parietal association cortices with the positive symptom dimension. Recently, we also found evidence for neurodevelopmental deviance in schizophrenia possibly involving the frontal pole (FP)-driven cortical network, in a sMRI study linking FP volume and total brain volume with age in NRS subjects and age-, gender- and education-matched healthy subjects. Overall, our findings highlight the potential significance of linking the homogeneous symptom dimensions of schizophrenia with dysfunctional connectivity in the fronto-temporal region.
Comparative spectral power head maps generated using the mean relative weighted power values at 30 scalp locations in schizophrenia (n = 28), healthy subjects (n = 25), positive symptom sub-group (n = 10), and negative symptom sub-group (n = 9): (a) delta power; (b) theta power; (c) alpha1 power; (d) alpha2 power. The maps were generated using the “griddata (v4)” method on MATLAB version 5.3.1.
| # | Section | Preview |
|---|---|---|
| 0 | INTRODUCTION | Frontal and temporal lobes have received the maximum attention of researchers working in the area of… |
| 1 | INTRODUCTION | which link the sub-divisions of the PFC with the striatum, pallidum, substantia nigra pars… |
| 2 | IS SCHIZOPHRENIA A DISORDER INVOLVING FRONTO-TEMPORAL DYSFUNCTION? | The PFC is a heterogeneous region comprising several areas that are distinct at the… |
| 3 | IS SCHIZOPHRENIA A DISORDER INVOLVING FRONTO-TEMPORAL DYSFUNCTION? | dysfunction observed in the group of conditions which we collectively refer to as schizophrenia. The… |
| 4 | OVERLAP BETWEEN PREFRONTAL AND TEMPORAL BEHAVIORAL SYNDROMES AND SYMPTOM DIMENSIONS OF SCHIZOPHRENIA — Temporo-limbic syndromes | The temporolimbic system theory of schizophrenia that links abnormalities of the medial temporal… |
| 5 | OVERLAP BETWEEN PREFRONTAL AND TEMPORAL BEHAVIORAL SYNDROMES AND SYMPTOM DIMENSIONS OF SCHIZOPHRENIA — Temporo-limbic syndromes | Lesions involving the medial temporal lobe (e.g. herpes simplex encephalitis, medial temporal lobe… |
| 6 | OVERLAP BETWEEN PREFRONTAL AND TEMPORAL BEHAVIORAL SYNDROMES AND SYMPTOM DIMENSIONS OF SCHIZOPHRENIA — Temporo-limbic syndromes | Schizophrenia is a phenotypically heterogeneous condition with varying presentations ranging from… |
| 7 | OVERLAP BETWEEN PREFRONTAL AND TEMPORAL BEHAVIORAL SYNDROMES AND SYMPTOM DIMENSIONS OF SCHIZOPHRENIA — Temporo-limbic syndromes | I detail here the research that we have carried out at the National Institute of Mental Health and… |
| 8 | DIMENSIONS OF PSYCHOPATHOLOGY IN NEUROLEPTIC-NAÏVE PATIENTS WITH RECENT-ONSET SCHIZOPHRENIA | Almost all the studies done on chronic medicated schizophrenia patients using the Scale for the… |
| 9 | DIMENSIONS OF PSYCHOPATHOLOGY IN NEUROLEPTIC-NAÏVE PATIENTS WITH RECENT-ONSET SCHIZOPHRENIA | and Kaiser normalization. Three components with eigen value>1 were extracted, viz., negative… |
| 10 | DIMENSIONS OF PSYCHOPATHOLOGY IN NEUROLEPTIC-NAÏVE PATIENTS WITH RECENT-ONSET SCHIZOPHRENIA — Relationship between symptom dimensions of schizophrenia and executive dysfunction | Generalized neuropsychological deficits as well as region- specific impairments localizable to the… |
| 11 | DIMENSIONS OF PSYCHOPATHOLOGY IN NEUROLEPTIC-NAÏVE PATIENTS WITH RECENT-ONSET SCHIZOPHRENIA — Relationship between symptom dimensions of schizophrenia and executive dysfunction | impairment of performance on any of the frontal lobe tests administered. Disorganization dimension… |
| 12 | DIMENSIONS OF PSYCHOPATHOLOGY IN NEUROLEPTIC-NAÏVE PATIENTS WITH RECENT-ONSET SCHIZOPHRENIA — EEG spectral profiles of positive and negative symptom sub-groups in neuroleptic-naïve patients with recent-onset schizophrenia | Quantitative electroencephalogram abnormalities have been frequently reported in schizophrenia.[33]… |
| 13 | DIMENSIONS OF PSYCHOPATHOLOGY IN NEUROLEPTIC-NAÏVE PATIENTS WITH RECENT-ONSET SCHIZOPHRENIA — EEG spectral profiles of positive and negative symptom sub-groups in neuroleptic-naïve patients with recent-onset schizophrenia | The higher alpha1 power noted in the resting state in the PS subgroup can be inferred to indicate… |
| 14 | DIMENSIONS OF PSYCHOPATHOLOGY IN NEUROLEPTIC-NAÏVE PATIENTS WITH RECENT-ONSET SCHIZOPHRENIA — EEG spectral profiles of positive and negative symptom sub-groups in neuroleptic-naïve patients with recent-onset schizophrenia | A limitation of the above study was the relatively small sample size of the PS (n=10) and NS (n=9)… |
| 15 | DIMENSIONS OF PSYCHOPATHOLOGY IN NEUROLEPTIC-NAÏVE PATIENTS WITH RECENT-ONSET SCHIZOPHRENIA — Relationship between EEG alpha coherence and symptom dimensions of schizophrenia | EEG spectral coherence analysis provides a non-invasive approach for studying cortico-cortical… |
| 16 | DIMENSIONS OF PSYCHOPATHOLOGY IN NEUROLEPTIC-NAÏVE PATIENTS WITH RECENT-ONSET SCHIZOPHRENIA — Relationship between EEG alpha coherence and symptom dimensions of schizophrenia | We examined the relationship between the three symptom dimensions and EEG alpha coherence in 37… |
| 17 | DIMENSIONS OF PSYCHOPATHOLOGY IN NEUROLEPTIC-NAÏVE PATIENTS WITH RECENT-ONSET SCHIZOPHRENIA — Predictive validity of neurodevelopmental markers (MPAs and NSS) as a composite endophenotype of schizophrenia and its relationship with symptom dimensions | Schizophrenia is conceptualized as a neurodevelopmental disorder[43] with manifest anomalies of… |
| 18 | DIMENSIONS OF PSYCHOPATHOLOGY IN NEUROLEPTIC-NAÏVE PATIENTS WITH RECENT-ONSET SCHIZOPHRENIA — Predictive validity of neurodevelopmental markers (MPAs and NSS) as a composite endophenotype of schizophrenia and its relationship with symptom dimensions | MPA and NSS in combination may prove to be a more robust endophenotype of schizophrenia, providing a… |
| 19 | DIMENSIONS OF PSYCHOPATHOLOGY IN NEUROLEPTIC-NAÏVE PATIENTS WITH RECENT-ONSET SCHIZOPHRENIA — Predictive validity of neurodevelopmental markers (MPAs and NSS) as a composite endophenotype of schizophrenia and its relationship with symptom dimensions | of MPAs predicted higher positive symptoms, negative symptoms, general psychopathology, as well as… |
No entities extracted from this document yet.
No uploaded files.
In this knowledge base
External
| Title | Authors | Journal | Year | Link |
|---|---|---|---|---|
| Cognitive dysfunction and its relationship with psychopathology and quality of life in patients with schizophrenia: a protocol for a cross sectional study | Longkumer I et al. | — | 2024 | — |
| Imaging-genomic spatial-modality attentive fusion for studying neuropsychiatric disorders. | Rahaman MA et al. | — | 2024 | → |
| The covariant structural and functional neuro-correlates of cognitive impairments in patients with end-stage renal diseases. | Liu Y et al. | — | 2024 | → |
| Exploration of the role of emotional expression of treatment-resistant schizophrenia patients having followed virtual reality therapy: a content analysis. | Hudon A et al. | — | 2023 | → |
| Evidence that the frontal pole has a significant role in the pathophysiology of schizophrenia. | Snelleksz M et al. | — | 2022 | → |
| Joint structural-functional magnetic resonance imaging features are associated with diagnosis and real-world functioning in patients with schizophrenia. | Antonucci LA et al. | — | 2022 | → |
| Examination of the Prefrontal Cortex Hemodynamic Responses to the Fist-Edge-Palm Task in Naïve Subjects Using Functional Near-Infrared Spectroscopy. | Kobayashi S et al. | — | 2021 | → |
| Roles of the ventral hippocampus and medial prefrontal cortex in spatial reversal learning and attentional set-shifting. | Cernotova D et al. | — | 2021 | → |
| Random Forest Classification of Alcohol Use Disorder Using fMRI Functional Connectivity, Neuropsychological Functioning, and Impulsivity Measures. | Kamarajan C et al. | — | 2020 | → |
| Increased and Decreased Superficial White Matter Structural Connectivity in Schizophrenia and Bipolar Disorder. | Ji E et al. | — | 2019 | → |
| Mean deviation based identification of activated voxels from time-series fMRI data of schizophrenia patients. | Chatterjee I | — | 2018 | → |
| Effects of aripiprazole versus risperidone on brain activation during planning and social-emotional evaluation in schizophrenia: A single-blind randomized exploratory study. | Liemburg EJ et al. | — | 2017 | → |
| Task and resting-state fMRI studies in first-episode schizophrenia: A systematic review. | Mwansisya TE et al. | — | 2017 | → |
| Advances in Electrophysiological Research. | Kamarajan C et al. | — | 2015 | → |
| The neuroanatomical basis of panic disorder and social phobia in schizophrenia: a voxel based morphometric study. | Picado M et al. | — | 2015 | → |
| Amplitude of low-frequency fluctuations in bipolar disorder: a resting state fMRI study. | Xu K et al. | — | 2014 | → |
| Effects of eye dominance (left vs. right) and cannabis use on intermanual coordination and negative symptoms in schizophrenia patients. | Gorynia I et al. | — | 2014 | → |
| Positive symptoms and water diffusivity of the prefrontal and temporal cortices in schizophrenia patients: a pilot study. | Park JY et al. | — | 2014 | → |
| Structural and functional brain alterations in end stage renal disease patients on routine hemodialysis: a voxel-based morphometry and resting state functional connectivity study. | Qiu Y et al. | — | 2014 | → |
| Coherence, phase differences, phase shift, and phase lock in EEG/ERP analyses. | Thatcher RW | — | 2012 | → |
| Dysplastic cortical formation in a patient with schizophrenia. | Thimmaiah R et al. | — | 2012 | → |
| Interhemispheric hypoconnectivity in schizophrenia: fiber integrity and volume differences of the corpus callosum in patients and unaffected relatives. | Knöchel C et al. | — | 2012 | → |
| Inter-relationship of plasma markers of oxidative stress and thyroid hormones in schizophrenics. | Akiibinu MO et al. | — | 2012 | → |
| The reduction of superoxide dismutase activity is associated with the severity of neurological soft signs in patients with schizophrenia. | Raffa M et al. | — | 2012 | → |
| Effects of handedness (left vs right) and cannabis abuse on intermanual coordination and negative symptoms in schizophrenic patients of the paranoid type. | Gorynia I et al. | — | 2011 | → |
| Indian Journal of Psychiatry and psychiatric research in India: Past, Present and Future. | Singh AR | — | 2010 | → |
| Prodromal research: Public health initiatives for prevention of schizophrenia. | Shrivastava A | — | 2010 | → |