Publications de Albulena Jashari-Shaqiri

Visual masking deficits in schizophrenia: a view into the genetics of the disease through an endophenotype

Michael Herzog, Jacques Fellay, Flavia Aurelia Shoko Hodel, Albulena Jashari-Shaqiri, Janir Nuno Ramos Antunes Da Cruz

Schizophrenia is a severe psychiatric disorder determined by a complex mixture of genetic and environmental factors. To better understand the contributions of human genetic variations to schizophrenia, we performed a genome-wide association study (GWAS) of ...

2022

Neural Compensation Mechanisms of Siblings of Schizophrenia Patients as Revealed by High-Density EEG

Michael Herzog, Maya Roinishvili, Ophélie Gladys Favrod, Patricia Figueiredo, Albulena Jashari-Shaqiri, Janir Nuno Ramos Antunes Da Cruz

Visual backward masking (VBM) deficits are candidate endophenotypes of schizophrenia indexing genetic liability of the disorder. In VBM, a target is followed by a mask that deteriorates target perception. Schizophrenia patients and, to a lesser extent, the ...

2020

The Individual Structure of Visual Space

Michael Herzog, Gregory Francis, Aline Françoise Cretenoud, Lukasz Grzeczkowski, Albulena Jashari-Shaqiri

SAGE PUBLICATIONS LTD2019

No Evidence for a Common Factor Underlying Visual Abilities in Healthy Older People

Michael Herzog, Aaron Michael Clarke, Aline Françoise Cretenoud, Albulena Jashari-Shaqiri

The world's population is aging at an increasing rate. Even in the absence of neurodegenerative disorders, healthy aging affects perception and cognition. In the context of cognition, common factors are well established. Much less is known about common fac ...

AMER PSYCHOLOGICAL ASSOC2019

Perception of Visual Illusions Is Intact in Schizophrenia

Michael Herzog, Fred Mast, Maya Roinishvili, Lukasz Grzeczkowski, Albulena Jashari-Shaqiri

SAGE PUBLICATIONS LTD2019

Schizophrenia patients using atypical medication perform better in visual tasks than patients using typical medication

Michael Herzog, Maya Roinishvili, Albulena Jashari-Shaqiri

Schizophrenia (SCZ) patients show deficits in many domains, including cognition and perception. However, results are often mixed. One reason for mixed results may be differences in medication. Very little is known about the role of medication in visual pro ...

2019

Is the perception of illusions abnormal in schizophrenia?

Michael Herzog, Fred Mast, Maya Roinishvili, Lukasz Grzeczkowski, Albulena Jashari-Shaqiri

There seems to be no common factor for visual perception, i.e., performance in visual tasks correlates only weakly with each other. Similar results were found with visual illusions. One may expect common visual factors for individuals suffering from pathol ...

2018

Sex-related differences in vision are heterogeneous

Michael Herzog, Maya Roinishvili, Lukasz Grzeczkowski, Christine Mohr, Albulena Jashari-Shaqiri

Nature Research2018

Statistical Learning Impairments as a Consequence of Stroke

Albulena Jashari-Shaqiri

Statistical learning is the implicit learning of the contingencies between sequential stimuli, typically from mere exposure. It is present from infancy onward, and plays a role in functions from language learning to selective attention. Despite these obser ...

2018

Perception of visual illusions is intact in schizophrenia

Michael Herzog, Fred Mast, Maya Roinishvili, Lukasz Grzeczkowski, Albulena Jashari-Shaqiri

There seems to be no common factor for visual perception because performance levels in many visual tasks correlate only weakly with each other. Similar results were found with visual illusions. However, one may expect common visual factors for individuals ...

2018

The individual structure of visual space

Michael Herzog, Gregory Francis, Aline Françoise Cretenoud, Lukasz Grzeczkowski, Albulena Jashari-Shaqiri

Common factors are ubiquitous. First, we show that, however in vision, correlations of performance in similar paradigms are low even though test-retest reliability is high. Second, one might expect that correlations increase with increasing age because of ...

2018

Rethinking Body Ownership in Schizophrenia: Experimental and Meta-analytical Approaches Show no Evidence for Deficits

Michael Herzog, Olaf Blanke, Maya Roinishvili, Ophélie Gladys Favrod, Mariia Kaliuzhna, Roy Salomon, Albulena Jashari-Shaqiri

Schizophrenia is a severe psychiatric disorder, in which patients experience an abnormal sense of self. While deficits in sensorimotor self-representation (agency) are well docu- mented in schizophrenia, less is known about other aspects of bodily self-rep ...

Oxford University Press2018

Electrophysiological correlates of visual backward masking in first-episode psychosis

Michael Herzog, Maya Roinishvili, Ophélie Gladys Favrod, Albulena Jashari-Shaqiri, Janir Nuno Ramos Antunes Da Cruz

Schizophrenia is a heterogeneous disorder and among other symptoms, patients have important visual impairments. Visual paradigms are therefore important tools to investigate the mechanisms of schizophrenia. We have previously shown that visual backward mas ...

2017

Visual backward masking and the schizophrenia spectrum: EEG correlates

Michael Herzog, Maya Roinishvili, Ophélie Gladys Favrod, Albulena Jashari-Shaqiri, Janir Nuno Ramos Antunes Da Cruz

Schizophrenia is a heterogeneous disease strongly influenced by genetic factors. We have previously shown that visual backward masking (VBM) is a very sensitive endophenotype of schizophrenia (Chkonia et al., 2010). Importantly, not only patients but also ...

2017

A factorial approach in aging research

Michael Herzog, Aaron Michael Clarke, Albulena Jashari-Shaqiri

The population of developed countries is aging at an ever increasing rate. Even in the absence of neurodegenerative diseases, aging affects perceptual and cognitive functions that are crucial for everyday life. The effects of healthy aging on cognitive abi ...

2017

Neural correlates of visual backward masking in psychosis

Michael Herzog, Maya Roinishvili, Ophélie Gladys Favrod, Christine Mohr, Albulena Jashari-Shaqiri, Janir Nuno Ramos Antunes Da Cruz

In visual backward masking (VBM), a target is followed by a mask, which deteriorates performance on the target. Schizophrenia and first episodes patients show strong behavioral deficits, reflected in strongly reduced amplitudes of the EEG as compared to co ...

2017

Multi-factorial approach in aging research

Michael Herzog, Aaron Michael Clarke, Albulena Jashari-Shaqiri

Aging affects all kinds of human functions including perception and cognition. In most perceptual studies, one paradigm is tested and it is usually found that older participants perform worse than younger participants. Implicitly, these results are taken a ...

2017

Multi-factorial approach in aging research

Michael Herzog, Aaron Michael Clarke, Albulena Jashari-Shaqiri

The developed world is aging faster than ever before. Even in the absence of neurodegenerative disease, aging affects all kinds of human functions including perception and cognition. In most perceptual studies, one paradigm is tested and it is usually foun ...

2017

Gender differences in visual perception

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

Association for Research in Vision and Ophthalmology2016

Gender differences in visual perception

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

Gender differences are well established in cognition and somato-sensation, but there are almost no studies on gender differences in visual perception. One reason is that sample size is often small because effect sizes are large. Small samples are not well ...

2016