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Towards everyday brain-computer interfacing through decoding visual cognition

Publications associées (106)

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Quantifying target conspicuity in contextual modulation by visual search

Michael Herzog, Bilge Sayim

Contextual elements can strongly modulate visual performance. For example, performance deteriorates when a vernier is flanked by neighboring lines. On a neural level, such contextual modulation is often explained by local spatial interactions such as later ...

Association for Research in Vision and Ophthalmology2011

A decision theoretic approach to motion saliency in computer animations

Mahmut Sami Arpa

We describe a model to calculate saliency of objects due to their motions. In a decision-theoretic fashion, perceptually significant objects inside a scene are detected. The work is based on psychological studies and findings on motion perception. By consi ...

Springer2011

The neural correlates of the shine-through effect

Michael Herzog, Gijs Plomp, Yvonne Evelina Thunell

Shine-through occurs when a briefly presented vernier stimulus is followed by a grating consisting of 25 lines: the vernier appears brighter, longer, wider, and superimposed on the grating. However, vernier offset discrimination is strongly impeded if two ...

2011

Activelets: Wavelets for sparse representation of hemodynamic responses

Michaël Unser, Dimitri Nestor Alice Van De Ville, Ildar Khalidov, François Lazeyras

We propose a new framework to extract the activity-related component in the BOLD functional magnetic resonance imaging (fMRI) signal. As opposed to traditional fMRI signal analysis techniques, we do not impose any prior knowledge of the event timing. Inste ...

Elsevier2011

Attention modulates spatio-temporal grouping

Michael Herzog

Dynamic stimuli are ubiquitous in natural viewing conditions implying that grouping operations need to operate, not only in space, but also jointly in space and time. Moreover, in natural viewing, attention plays an important role in controlling how resour ...

Elsevier2011

When transcranial magnetic stimulation (TMS) modulates feature integration

Michael Herzog, Johannes Rüter

How the brain integrates visual information across time into coherent percepts is an open question. Here, we presented two verniers with opposite offset directions one after the other. A vernier consists of two vertical bars that are horizontally offset. W ...

Wiley-Blackwell2010

Brain Decoding Of Fmri Connectivity Graphs Using Decision Tree Ensembles

Dimitri Nestor Alice Van De Ville, Jonas Richiardi

Functional connectivity analysis of fMRI data can reveal synchronized activity between anatomically distinct brain regions. Here, we exploit the characteristic connectivity graphs of task and resting epochs to perform classification between these condition ...

Ieee Service Center, 445 Hoes Lane, Po Box 1331, Piscataway, Nj 08855-1331 Usa2010

Decoding of attention deployment

Michael Herzog, Gijs Plomp, Yvonne Evelina Thunell

Attending to an object can strongly modulate the neural processing of this object. Using average EEG, it was shown that small differences in the focus of attention yield large and long lasting changes in brain dynamics (Plomp et al, 2009). Here, we show th ...

2010

Feature-based activation and suppression during binocular rivalry

Marcus Leonardus Vergeer

In the past decade, effects of pattern coherence have indicated that perception during binocular rivalry does not result solely from reciprocal inhibitory competition between monocular channels. In this study we were interested in feature selectivity both ...

Elsevier2010

Contextual modulation in human vision

Toni Saarela

The processing and perception of visual stimuli are greatly dependent on the context in which those stimuli are presented. While this is not always (and indeed is probably not "supposed" to be) evident when viewing real-world scenes, the abundance of conte ...

EPFL2009