Publications de Guillaume Sierro

Electrophysiological correlates of visual backward masking in high schizotypic personality traits participants

Michael Herzog, Christine Mohr, Maya Roinishvili, Ophélie Gladys Favrod, Guillaume Sierro

Visual backward masking is strongly deteriorated in patients with schizophrenia. Masking deficits are associated with strongly reduced amplitudes of the global field power in the EEG. Healthy participants who scored high in cognitive disorganization (a sch ...

Elsevier2017

EEG Correlates of Backward Masking in Schizotypy

Michael Herzog, Ophélie Gladys Favrod, Christine Mohr, Maya Roinishvili, Guillaume Sierro

Visual deficits are well documented in schizophrenia, especially in backward masking. In our task a Vernier is followed by a blank inter-stimulus interval (ISI) and then a grating mask. Observers indicate the direction of the Vernier offset (left vs right) ...

2016

Electrophysiological Correlates of Visual Backward Masking in Schizotypy

Michael Herzog, Christine Mohr, Ophélie Gladys Favrod, Guillaume Sierro

Visual deficits are well documented in schizophrenia. For example, a Vernier is followed by a blank inter-stimulus interval (ISI) and then a grating mask. Observers indicate the direction of the Vernier offset (left vs right). Patients need ISIs that are 1 ...

2016

Gender differences in visual perception

Michael Herzog, Christine Mohr, Albulena Jashari-Shaqiri, Maya Roinishvili, Guillaume Sierro

Association for Research in Vision and Ophthalmology2016

Electrophysiological correlates of backward masking in students scoring high in cognitive disorganization

Michael Herzog, Ophélie Gladys Favrod, Christine Mohr, Maya Roinishvili, Guillaume Sierro

Association for Research in Vision and Ophthalmology2016

Does chronic nicotine consumption influence visual backward masking in schizophrenia and schizotypy?

Michael Herzog, Christine Mohr, Albulena Jashari-Shaqiri, Maya Roinishvili, Guillaume Sierro

Nicotine consumption is higher for people within the schizophrenia spectrum compared to controls. This observation supports the self-medication hypothesis, that nicotine relives symptoms in, for example, schizophrenia patients. We tested whether performanc ...

2015

Visual backward masking deficits in schizotypy are observed in late but not early onset nicotine smokers

Michael Herzog, Christine Mohr, Guillaume Sierro, Géraldine Beaud

Visual backward masking (VBM) is a potential endophenotype for schizophrenia. Relative VBM deficits were also observed in high as compared to low scorers in one schizotypal subdimension (cognitive disorganisation, CogDis; Cappe et al., 2012). VBM deficits ...

2014

Sex moderates the relationship between cognitive disorganisation and visual backward masking: potential implications for an endophenotype of schizophrenia

Michael Herzog, Christine Mohr, Guillaume Sierro

Schizophrenia is a severe mental disorder that impairs individuals’ life, often chronically and from early adulthood on. There is a search for endophenotypes, i.e. stable markers of the genetic underpinnings of the disease. Visual backward masking (VBM) is ...

2012