Publication
Long-lasting visual integration of form, motion, and color as revealed by visual masking
Publications associées (34)
Automatic grouping of regular structures
Michael Herzog, Frank Scharnowski
To cope with the continuously incoming stream of input, the visual system has to group information across space and time. Usually, spatial and temporal grouping are investigated separately. However, recent findings revealed that these two grouping mechanis ...
Association for Research in Vision and Ophthalmology2010Functional specialization and dynamic resource allocation in visual cortex
We studied the spatiotemporal characteristics of cortical activity in early visual areas and the fusiform gyri (FG) by means of magnetoencephalography (MEG). Subjects performed a visual classification task, in which letters and visually similar pseudolette ...
Wiley-Blackwell2010Early visual processing deficits in the elderly: anterior increases and posterior decreases of electrical source activity
Michael Herzog, Maya Roinishvili, Gijs Plomp
We compared temporal processing in elderly and young controls using EEG and electrical neuroimaging. Subjects discriminated the offset direction of Vernier stimuli in four conditions: Vernier only, mask only, Vernier immediately followed by a mask, and Ver ...
2010Long-lasting modulation of feature integration by transcranial magnetic stimulation
Michael Herzog, Frank Scharnowski, Johannes Rüter
The human brain analyzes a visual object first by basic feature detectors. On the objects way to a conscious percept, these features are integrated in subsequent stages of the visual hierarchy. The time course of this feature integration is largely unknown ...
Association for Research in Vision and Ophthalmology2009Transcranial magnetic stimulation (TMS) of early visual but not frontal cortices reveals a feature memory of substantial duration
Michael Herzog, Frank Scharnowski, Johannes Rüter, Nicole Lironi
Objective: How the brain achieves integration of temporally dispersed information is one of the enigmas in the neurosciences. By combining feature fusion with transcranial magnetic stimulation (TMS), we show that individual visual features are stored for s ...
2008Virtual lesion of ventral premotor cortex impairs visual perception of biomechanically possible but not impossible actions
Single-pulse transcranial magnetic stimulation (TMS) studies show that action observation facilitates the onlooker's cortico-spinal system supporting the notion of motor mirroring. Repetitive transcranial magnetic stimulation (rTMS) over ventral premotor c ...
2008Early Category-Specific Cortical Activation Revealed by Visual Stimulus Inversion
Visual categorization may already start within the first 100-ms after stimulus onset, in contrast with the long-held view that during this early stage all complex stimuli are processed equally and that category-specific cortical activation occurs only at l ...
Public Library of Science2008How TMS and stimulus off/on signals modulate feature integration
Michael Herzog, Frank Scharnowski, Johannes Rüter
When a right offset vernier is immediately followed by a left offset vernier (or vice versa), only one vernier is perceived. Feature fusion has occurred. In feature fusion, observers cannot resolve the two verniers individually. Subjects perform at chance ...
Association for Research in Vision and Ophthalmology2008Transcranial Magnetic Stimulation of Early Visual Cortex Reveals a Window of Integration of Substantial Duration.
Michael Herzog, Frank Scharnowski, Johannes Rüter
How the brain achieves integration of temporally dispersed information is one of the enigmas in the neurosciences. By combining feature fusion with transcranial magnetic stimulation (TMS), we show that individual visual features are independently stored fo ...
2007Intact feature fusion in schizophrenic patients
How the various features of an object are bound to a unified percept is one of the most fundamental problems the human brain has to solve. Whereas healthy observers usually do not reveal binding errors, it has been proposed that schizophrenic patients suff ...
Springer Verlag2004