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@ARTICLE{Gandal:201866,
author = {Gandal, Michael J. and Edgar, J. Christopher and Klook,
Kerstin and Siegel, Steven J.},
title = {{G}amma synchrony: {T}owards a translational biomarker for
the treatment-resistant symptoms of schizophrenia},
journal = {Neuropharmacology},
volume = {62},
number = {3},
issn = {0028-3908},
address = {Amsterdam [u.a.]},
publisher = {Elsevier Science},
reportid = {FZJ-2015-04160},
pages = {1504 - 1518},
year = {2012},
abstract = {The lack of efficacy for antipsychotics with respect to
negative symptoms and cognitive deficits is a significant
obstacle for the treatment of schizophrenia. Developing new
drugs to target these symptoms requires appropriate neural
biomarkers that can be investigated in model organisms, be
used to track treatment response, and provide insight into
pathophysiological disease mechanisms. A growing body of
evidence indicates that neural oscillations in the gamma
frequency range (30–80 Hz) are disturbed in schizophrenia.
Gamma synchrony has been shown to mediate a host of sensory
and cognitive functions, including perceptual encoding,
selective attention, salience, and working memory –
neurocognitive processes that are dysfunctional in
schizophrenia and largely refractory to treatment. This
review summarizes the current state of clinical literature
with respect to gamma-band responses (GBRs) in
schizophrenia, focusing on resting and auditory paradigms.
Next, preclinical studies of schizophrenia that have
investigated gamma-band activity are reviewed to gain
insight into neural mechanisms associated with these
deficits. We conclude that abnormalities in gamma synchrony
are ubiquitous in schizophrenia and likely reflect an
elevation in baseline cortical gamma synchrony (‘noise’)
coupled with reduced stimulus-evoked GBRs (‘signal’).
Such a model likely reflects hippocampal and cortical
dysfunction, as well as reduced glutamatergic signaling with
downstream GABAergic deficits, but is probably less
influenced by dopaminergic abnormalities implicated in
schizophrenia. Finally, we propose that analogous
signal-to-noise deficits in the flow of cortical information
in preclinical models are useful targets for the development
of new drugs that target the treatment-resistant symptoms of
schizophrenia.},
cin = {INM-2},
ddc = {610},
cid = {I:(DE-Juel1)INM-2-20090406},
pnm = {331 - Signalling Pathways and Mechanisms in the Nervous
System (POF2-331)},
pid = {G:(DE-HGF)POF2-331},
typ = {PUB:(DE-HGF)16 / PUB:(DE-HGF)36},
UT = {WOS:000300533800034},
pubmed = {pmid:21349276},
doi = {10.1016/j.neuropharm.2011.02.007},
url = {https://juser.fz-juelich.de/record/201866},
}