Brain Electrical Activity Mapping (BEAM) in Schizophrenic Patients

Morihisa, John M.

doi:10.1001/archpsyc.1983.01790060017002

Cited by 240 publications

(79 citation statements)

References 44 publications

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“…In our study, the beta excess was primarily observed over frontal regions of the brain, which confirms the results of Clarke et al [36]. Increased beta activity has been interpreted as reflecting elevated cortical activity [57], and has also been linked with sympathetic system activation [58]. Also, in an fMRI study [59] as well as in a SPECT study [60], more activity was found in the anterior cingulate of ADHD subjects compared to controls.…”

Section: Discussionsupporting

confidence: 91%

Is Excessive Electroencephalography Beta Activity Associated with Delinquent Behavior in Men with Attention-Deficit Hyperactivity Disorder Symptomatology?

Meier¹,

Perrig²,

Koenig³

2014

Neuropsychobiology

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Background/Aims: The attention-deficit/hyperactivity disorder (ADHD) shows an increased prevalence in delinquents compared to the normal population. In recent studies, a subgroup of subjects with ADHD as well as a subgroup of delinquents displayed excessive electroencephalography (EEG) beta activity, which has been associated with antisocial behavior in ADHD children. We investigated whether delinquent behavior in adults with ADHD symptomatology is related to excessive beta activity. Methods: We compared the resting state EEGs (eyes open/closed) of delinquent and nondelinquent subjects with ADHD symptoms and those of a control group regarding EEG power spectra and topography. Results: Delinquents with ADHD symptomatology showed more beta power at frontal, central and parietal brain regions than nondelinquents with ADHD symptoms. Conclusion: Excessive beta power may thus represent a risk factor for delinquent behavior in adults with ADHD symptomatology. The awareness of such a risk factor may be helpful in the assessment of the risk for delinquent behavior in a psychiatric context and may provide a neurobiological background for therapeutic interventions. © 2014 S. Karger AG, Basel

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Section: Discussionsupporting

confidence: 91%

Is Excessive Electroencephalography Beta Activity Associated with Delinquent Behavior in Men with Attention-Deficit Hyperactivity Disorder Symptomatology?

Meier¹,

Perrig²,

Koenig³

2014

Neuropsychobiology

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“…For example, treatment responsive patients tended to have more fast activity and a lesser increase in slow activity as compared to treatment non-responsive patients (45). Other studies found differences between paranoid and hebephrenic patients (32), medicated and un-medicated patients (46), and patients with and without enlargement of lateral ventricles (37). Moreover, a lack of standardized methodology, including reporting the means and standard deviations, characterizes the literature.…”

Section: Nomentioning

confidence: 99%

The status of spectral EEG abnormality as a diagnostic test for schizophrenia

Boutros

Arfken

Galderisi³

et al. 2008

Schizophrenia Research

267

222

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Objective-A literature review was conducted to ascertain whether or not EEG spectral abnormalities are consistent enough to warrant additional effort towards developing them into a clinical diagnostic test for schizophrenia.Methods-Fifty three papers met criteria for inclusion into the review and 15 were included in a meta-analysis of the degree of significance of EEG deviations as compared to healthy controls. Studies were classified based on a 4-step approach based on guidelines for evaluating the clinical usefulness of a diagnostic test.Results-Our review and meta-analysis revealed that most of the abnormalities are replicated in the expected directions with the most consistent results related to the increased preponderance of slow rhythms in schizophrenia patients. This effect remained consistent in un-medicated patients. Only a small number of studies provided data on the sensitivity and specificity of the findings in differentiating among the psychiatric disorders that frequently appear on the same differential diagnostic list as schizophrenia (step 3 studies). No multicenter studies using standardized assessment criteria were found (step 4 studies). Conclusions-AdditionalStep 3 and Step 4 studies are needed to draw conclusions on the usefulness of EEG spectral abnormalities as a diagnostic test for schizophrenia

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“…Alternatively, earlier EEG studies in schizophrenia focused primarily on lower frequencies and found substantial evidence of abnormalities. Increased pre-stimulus theta-and delta-band activity have consistently been observed in schizophrenia, occurring; 1) both locally and among distant electrodes; 2) regardless of medication history, and 3) in both first-episode and chronic patients (Morihisa et al, 1983, Morstyn et al, 1983, Sponheim et al, 1994. Converging evidence from magnetic resonance imaging studies supports that the default network in schizophrenia tends to be overactive (Fehr et al, 2003, Harrison et al, 2007.…”

Section: Event-related Spectral Perturbations (Ersp) Abnormalities Inmentioning

confidence: 99%