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Michael Herzog

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Publications associées (436)

How color, regularity, and good Gestalt determine backward masking

Michael Herzog, Bilge Sayim, Mauro Manassi

The strength of visual backward masking depends on the stimulus onset asynchrony (SOA) between target and mask. Recently, it was shown that the conjoint spatial layout of target and mask is as crucial as SOA. Particularly, masking strength depends on wheth ...

Association for Research in Vision and Ophthalmology2014

Visual crowding illustrates the inadequacy of local vs. global and feedforward vs. feedback distinctions in modeling visual perception

Michael Herzog, Gregory Francis, Aaron Michael Clarke

Experimentalists tend to classify models of visual perception as being either local or global, and involving either feedforward or feedback processing. We argue that these distinctions are not as helpful as they might appear, and we illustrate these issues ...

Frontiers Media2014

Small effects of smoking on visual spatiotemporal processing

Michael Herzog

Nicotine is an important stimulant that is involved in modulating many neuronal processes, including those related to vision. Nicotine is also thought to play a key role in schizophrenia: A genetic variation of the cholinergic nicotine receptor gene, alpha ...

Nature Publishing Group2014

Neural correlates of visual crowding

Michael Herzog, Gijs Plomp, Vitaly Chicherov

In visual crowding, target discrimination strongly deteriorates when flanking elements are added. We have recently shown that crowding cannot be explained by simple low-level interactions and that grouping is a key component instead. We presented a vernier ...

Elsevier2014

The trail making test as a screening instrument for driving performance in older drivers; a translational research

Michael Herzog, Isabel Cardoso, Paul Vaucher, Daniela Herzig

Background: In many countries, primary care physicians determine whether or not older drivers are fit to drive. Little, however, is known regarding the effects of cognitive decline on driving performance and the means to detect it. This study explores to w ...

BioMed Central2014

Two primes priming: Does feature integration occur before response activation?

Michael Herzog, Frank Scharnowski, Thomas Schmidt, Julianne Grainger

Responses to a target can be sped up or slowed down by a congruent or incongruent prime, respectively. Even though presentations are rapid, the prime and the target are thought to activate motor responses in strict sequence, with prime activation preceding ...

Association for Research in Vision and Ophthalmology2013

Does spatio-temporal filtering account for nonretinotopic motion perception? Comment on Pooresmaeili, Cicchini, Morrone, and Burr (2012)

Michael Herzog, Marc Repnow, Aaron Michael Clarke

Association for Research in Vision and Ophthalmology2013

Crowding of crowding leads to uncrowding

Michael Herzog, Bilge Sayim, Mauro Manassi

In crowding, target discrimination is impaired by flanking elements. What happens if a target is neighbored by flankers A and in addition by further flankers B? According to pooling models, crowding is the consequence of averaging features of target and fl ...

2013

Self-motion perception training: thresholds improve in the light but not in the dark

Michael Herzog, Fred Mast

We investigated perceptual learning in self-motion perception. Blindfolded participants were displaced leftward or rightward by means of a motion platform and asked to indicate the direction of motion. A total of eleven participants underwent 3,360 practic ...

Springer2013

Association of the Nicotinic Receptor α7 Subunit Gene (CHRNA7) with Schizophrenia and Visual Backward Masking

Michael Herzog, Maya Roinishvili

2013

How vision works: The physiological mechanisms behind what we see

Michael Herzog

Pion Ltd2013

The neural correlates of non-retinotopic motion integration as revealed by high-density EEG

Michael Herzog, Yvonne Evelina Thunell, Gijs Plomp

Under normal viewing conditions, due to the motion of objects and to eye movements, the retinotopic representation of the environment constantly changes. Yet we perceive the world as stable, and we easily keep track of moving objects. Here, we investigated ...

2013

Electrophysiological correlates of suppression and facilitation in crowding

Michael Herzog, Vitaly Chicherov

In crowding, neighboring elements deteriorate performance on a target. The neural mechanisms of crowding are largely unknown. We have recently shown that the N1 component of the EEG is suppressed during crowding. It is difficult to disentangle the processi ...

Pion Ltd2013

The neural correlates of non-retinotopic processing in human visual cortex: a 7T fMRI study

Michael Herzog, Yvonne Evelina Thunell, Wietske Van der Zwaag, Gijs Plomp

Under normal viewing conditions, due to e.g. the motion of objects, the retinotopic representation of the environment constantly changes. Yet we perceive the world as stable and we easily keep track of moving objects, indicating the presence of non-retinot ...

Association for Research in Vision and Ophthalmology2013

When crowding of crowding leads to uncrowding

Michael Herzog, Bilge Sayim, Mauro Manassi

In object recognition, features are thought to be processed in a hierarchical fashion from low-level analysis (edges and lines) to complex figural processing (shapes and objects). Here, we show that figural processing determines low-level processing. Verni ...

Association for Research in Vision and Ophthalmology2013

An LCD tachistoscope with submillisecond precision

Michael Herzog, Marc Repnow

Tachistoscopes allow brief visual stimulation delivery, which is crucial for experiments in which subliminal presentation is required. Up to now, tachistoscopes have had shortcomings with respect to timing accuracy, reliability, and flexibility of use. Her ...

2013

Crowding and grouping: how much time is needed to process good Gestalt?

Michael Herzog, Mauro Manassi

In crowding, perception of a target is deteriorated by flanking elements. Crowding is usually explained by pooling models where target and flanker signals are averaged. We show here that crowding is rather determined by grouping and good Gestalt. We determ ...

2013

Schizophrenia and visual backward masking: a general deficit of target enhancement

Michael Herzog, Maya Roinishvili

The obvious symptoms of schizophrenia are of cognitive and psychopathological nature. However, schizophrenia affects also visual processing which becomes particularly evident when stimuli are presented for short durations and are followed by a masking stim ...

Frontiers Media2013

Visual masking deficits in healthy and schizophrenic women

Michael Herzog, Maya Roinishvili

Schizophrenic patients have serious visual masking deficits which are likely related to the genetic underpinnings of the disease because also unaffected relatives of the patients show masking deficits. We presented a left/right offset vernier followed by a ...

2013

Electrophysiological Evidence for Ventral Stream Deficits in Schizophrenia Patients

Michael Herzog, Gijs Plomp, Maya Roinishvili

Schizophrenic patients suffer from many deficits including visual, attentional, and cognitive ones. Visual deficits are of particular interest because they are at the fore-end of information processing and can provide clear examples of interactions between ...

Oxford Univ Press2013

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