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Probing and modulating inter-areal coupling in the cortical visual motion processing pathway with non-invasive brain stimulation

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Two lectures about representing scientific communities by data visualization

Dario Rodighiero

These lectures present a research that investigates the representation of communities, and the way to foster their understanding by different audiences. Communities are complex multidimensional entities intrinsically difficult to represent synthetically ...

2016

Visual impairments in schizophrenia

Michael Herzog, Maya Roinishvili

The obvious symptoms of schizophrenia are hallucinations, delusions, and cognitive dysfunctions. However, schizophrenia patients have many other abnormalities, including visual impairments. Visual paradigms are versatile tools of schizophrenia research bec ...

2016

Local versus global and retinotopic versus non-retinotopic motion processing in schizophrenia

Michael Herzog, Maya Roinishvili, Marc Michael Lauffs

Schizophrenia impairs cognitive function as much as perception. For example, patients perceive global motion in random dot kinematograms less strongly, because the integration of the dots into a single Gestalt is complex (e.g., Chen, Nakayama, Levy, Matthy ...

2016

Visual gravity contributes to subjective first-person perspective

Olaf Blanke, Bruno Herbelin, Andrea Serino, Christian Pfeiffer, Petr Grivaz

A fundamental component of conscious experience involves a first-person perspective (1PP), characterized by the experience of being a subject and of being directed at the world. Extending earlier work on multisensory perceptual mechanisms of 1PP, we here a ...

Oxford Univ Press2016

Device, System, and Method for Robot-Controlled Induction of the Feeling of Human Presence

Olaf Blanke, Giulio Rognini, Masayuki Hara

A method for inducing the feeling of a presence (FoP) in a subject by using a master-slave robotic system, the method including the steps of altering a visual perception of a surrounding environment of the subject, connecting the subject with a robotic mas ...

2016

An overview of quantitative approaches in Gestalt perception

Michael Herzog

Gestalt psychology is often criticized as lacking quantitative measurements and precise mathematical models. While this is true of the early Gestalt school, today there are many quantitative approaches in Gestalt perception and the special issue of Vision ...

Elsevier2016

Crowding and shape representations

Michael Herzog, Aaron Michael Clarke, Mauro Manassi

In crowding, target perception deteriorates when flanking elements are added. Crowding is traditionally characterized by target-flanker interactions which are (1) deleterious, (2) spatially confined within Bouma’s window, and (3) feature specific. Here, we ...

Sage Publications Ltd2015

Retinal prostheses: progress toward the next generation implants

Diego Ghezzi

In the last decade, various clinical trials proved the capability of visual prostheses, in particular retinal implants, to restore a useful form of vision. These encouraging results promoted the emerging of several strategies for neuronal stimulation aimin ...

Frontiers Research Foundation2015

Vision in clutter

Vitaly Chicherov

Perception of a visual target can strongly deteriorate in the presence of flanking elements (crowding). Crowding is the main limiting factor in reading and a major contributor to poor vision in amblyopia. In crowding, elements appear jumbled and thus are h ...

EPFL2015

Contour erasure and filling-in: Old simulations account for most new observations

Gregory Francis

Three recent studies used similar stimulus sequences to investigate mechanisms for brightness perception. Anstis and Greenlee (2014) demonstrated that adaptation to a flickering black and white outline erased the visibility of a subsequent target shape def ...

Pion Ltd2015