Increased resting-state gamma-band connectivity in first-episode schizophrenia

C Andreou, G Nolte, G Leicht, N Polomac… - Schizophrenia …, 2015 - academic.oup.com
Background: Schizophrenia has long been suggested to represent a disorder with prominent
neural dysconnectivity. Gamma-band oscillations are highly relevant in this context, due …

Resting-state connectivity in the prodromal phase of schizophrenia: insights from EEG microstates

…, PL Faber, G Leicht, D Schoettle, N Polomac… - Schizophrenia …, 2014 - Elsevier
Introduction Resting-state EEG microstates are thought to reflect the momentary local states
and interactions of distributed neural networks in the brain. Several changes in resting-state …

Resting-state theta-band connectivity and verbal memory in schizophrenia and in the high-risk state

C Andreou, G Leicht, G Nolte, N Polomac, S Moritz… - Schizophrenia …, 2015 - Elsevier
Background Disturbed functional connectivity is assumed to underlie neurocognitive deficits
in patients with schizophrenia. As neurocognitive deficits are already present in the high-risk …

[HTML][HTML] Sequential implementation of DSC-MR perfusion and dynamic [18F]FET PET allows efficient differentiation of glioma progression from treatment-related …

E Steidl, KJ Langen, SA Hmeidan, N Polomac… - European journal of …, 2021 - Springer
Sequential implementation of DSC-MR perfusion and dynamic [18F]FET PET allows efficient
differentiation of glioma progression from treatment-related changes | European Journal of …

EEG-informed fMRI reveals a disturbed gamma-band–specific network in subjects at high risk for psychosis

G Leicht, S Vauth, N Polomac, C Andreou… - Schizophrenia …, 2016 - academic.oup.com
Objectives. Abnormalities of oscillatory gamma activity are supposed to reflect a core
pathophysiological mechanism underlying cognitive disturbances in schizophrenia. The auditory …

Conscious auditory perception related to long-range synchrony of gamma oscillations

S Steinmann, G Leicht, M Ertl, C Andreou, N Polomac… - Neuroimage, 2014 - Elsevier
While the role of synchronized oscillatory activity in the gamma-band frequency range for
conscious perception is well established in the visual domain, there is limited evidence …

Neural mechanisms of placebo anxiolysis

B Meyer, KSL Yuen, M Ertl, N Polomac… - Journal of …, 2015 - Soc Neuroscience
The beneficial effects of placebo treatments on fear and anxiety (placebo anxiolysis) are
well known from clinical practice, and there is strong evidence indicating a contribution of …

[HTML][HTML] Frequency drift in MR spectroscopy at 3T

…, R Peeters, SJ Peltier, U Pilatus, N Polomac… - NeuroImage, 2021 - Elsevier
Purpose Heating of gradient coils and passive shim components is a common cause of
instability in the B 0 field, especially when gradient intensive sequences are used. The aim of the …

Glutamatergic deficit and schizophrenia-like negative symptoms: new evidence from ketamine-induced mismatch negativity alterations in healthy male humans

…, G Leicht, S Curic, S Steinmann, N Polomac… - Journal of Psychiatry and …, 2017 - jpn.ca
Background: Targeting the N-methyl-d-aspartate receptor (NMDAR) is a major translational
approach for treating negative symptoms of schizophrenia. Ketamine comprehensively …

Reduced auditory evoked gamma band response and cognitive processing deficits in first episode schizophrenia

G Leicht, C Andreou, N Polomac, C Lanig… - The World Journal of …, 2015 - Taylor & Francis
Objectives. Gamma-band oscillations (eg, the early auditory evoked gamma-band response,
aeGBR) have been suggested to mediate cognitive and perceptual processes by driving …