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.jpg): Failed to open stream: No such file or directory in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 117 Curr+Opin+Psychiatry
2016 ; 29
(3
): 202-10
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Gamma band oscillations: a key to understanding schizophrenia symptoms and neural
circuit abnormalities
#MMPMID26900672
McNally JM
; McCarley RW
Curr Opin Psychiatry
2016[May]; 29
(3
): 202-10
PMID26900672
show ga
PURPOSE OF REVIEW: We review our current understanding of abnormal ? band
oscillations in schizophrenia, their association with symptoms and the underlying
cortical circuit abnormality, with a particular focus on the role of fast-spiking
parvalbumin gamma-aminobutyric acid (GABA) neurons in the disease state. RECENT
FINDINGS: Clinical electrophysiological studies of schizophrenia patients and
pharmacological models of the disorder show an increase in spontaneous ? band
activity (not stimulus-evoked) measures. These findings provide a crucial link
between preclinical and clinical work examining the role of ? band activity in
schizophrenia. MRI-based experiments measuring cortical GABA provides evidence
supporting impaired GABAergic neurotransmission in schizophrenia patients, which
is correlated with ? band activity level. Several studies suggest that
stimulation of the cortical circuitry, directly or via subcortical structures,
has the potential to modulate cortical ? activity, and improve cognitive
function. SUMMARY: Abnormal ? band activity is observed in patients with
schizophrenia and disease models in animals, and is suggested to underlie the
psychosis and cognitive/perceptual deficits. Convergent evidence from both
clinical and preclinical studies suggest the central factor in ? band
abnormalities is impaired GABAergic neurotransmission, particularly in a subclass
of neurons which express parvalbumin. Rescue of ? band abnormalities presents an
intriguing option for therapeutic intervention.