A5069178578- Visual perception and processing mechanisms
- Neural and Behavioral Psychology Studies
- Transcranial Magnetic Stimulation Studies
- Neural dynamics and brain function
- LGBTQ Health, Identity, and Policy
- Spatial Neglect and Hemispheric Dysfunction
- Visual Attention and Saliency Detection
- Vestibular and auditory disorders
- Sexuality, Behavior, and Technology
- EEG and Brain-Computer Interfaces
- Memory and Neural Mechanisms
- Intimate Partner and Family Violence
- Organ Donation and Transplantation
- Ophthalmology and Visual Impairment Studies
- Olfactory and Sensory Function Studies
- Spatial Cognition and Navigation
- Gaze Tracking and Assistive Technology
- Marriage and Sexual Relationships
- Neurological Disorders and Treatments
- Sexual Assault and Victimization Studies
- Color perception and design
- Retinal Development and Disorders
- Advanced Neuroimaging Techniques and Applications
- Multisensory perception and integration
- Obsessive-Compulsive Spectrum Disorders
Charité - Universitätsmedizin Berlin
2012-2025
Brooklyn College
2020-2024
City University of New York
2020-2024
Stony Brook University
2022-2024
Centre for Cosmology and Particle Physics Phenomenology
2022
University of Southern Denmark
2022
State University of New York
2022
Ludwig-Maximilians-Universität München
1988-2018
German Medical Association
2018
Humboldt-Universität zu Berlin
1996-2011
Covertly directing visual attention toward a spatial location in the absence of stimulation enhances future processing at attended position. The neuronal correlates these shifts involve modulation “baseline” activity early areas, presumably through top-down control from higher-order attentional systems. We used electroencephalography to study largely unknown relationship between modulations and behavioral outcome an orienting paradigm. Covert visuospatial either left or right peripheral...
Culham, Jody C., Stephan A. Brandt, Patrick Cavanagh, Nancy G. Kanwisher, Anders M. Dale, and Roger B. H. Tootell. Cortical fMRI activation produced by attentive tracking of moving targets. J. Neurophysiol. 80: 2657–2670, 1998. Attention can be used to keep track items, particularly when there are multiple targets interest that cannot all followed with eye movements. Functional magnetic resonance imaging (fMRI) was investigate cortical regions involved in tracking. flattening techniques...
Abstract In nine naïve subjects eye movements were recorded while viewed and visualized four irregularly-checkered diagrams. Scanpaths, defined as repetitive sequences of fixations saccades found during visual imagery viewing. Positions distributed according to the spatial arrangement subfeatures in For a particular imagined diagrammatic picture, closely correlated with viewing same picture. Thus are not random but reflect content scene. The question is discussed whether scanpath play...
Attending a certain region in space enhances activity visual areas retinotopically mapped to this region; stimuli presented are preferentially processed. The zoom lens model of attention proposes that the attended can be adjusted size and predicts tradeoff between its processing efficiency because limited capacities. By means event-related functional magnetic resonance imaging, we analyzed neural multiple as function an field region, which was defined by spatial cue stimulus. After cueing,...
Understanding processes performed by an intact visual cortex as the basis for developing methods that enhance or restore perception is of great interest to both researchers and medical practitioners. Here, we explore whether contrast sensitivity, a main function primary (V1), can be improved in healthy subjects repetitive, noninvasive anodal transcranial direct current stimulation (tDCS). Contrast was measured via threshold perimetry directly before after intervention (tDCS sham stimulation)...
Any attempt to restore visual functions in blind subjects with pregeniculate lesions provokes the question of extent which deafferented cortex is still able generate conscious experience. As a simple approach assessing activation cortex, can be asked report subjective light sensations (phosphenes) elicited by focal transcranial magnetic stimulation (TMS) over occiput. We hypothesized that such induction phosphenes used as an indicator residual function and studied 35 registered after partial...
Intimate partner violence (IPV) is prevalent among young gay and bisexual men (YGBM) associated with physical mental health problems, as well deleterious psychosocial conditions. Most previous studies of IPV YGBM have been quantitative in nature not examined the numerous subtypes IPV, chronicity experiences, how manifested context these same-sex relationships. Thus, a qualitative approach may be useful exploring multidimensional understudied experiences. The present study sought to (a)...
We investigated contour processing and figure-ground detection within human retinotopic areas using event-related functional magnetic resonance imaging (fMRI) in 6 healthy naïve subjects. A figure (6 degrees side length) was created by a 2nd-order texture contour. An independent demanding foveal letter-discrimination task prevented subjects from noticing this more peripheral stimulus. The subdivided our stimulus into ground. Using localizers mapping stimuli we were able to subdivide each...
With the present study we investigated cue-induced preparation in a Simon task and measured electroencephalogram functional magnetic resonance imaging (fMRI) data two within-subjects sessions. Cues informed either about upcoming (1) spatial stimulus-response compatibility (rule cues), or (2) stimulus location (position (3) were non-informative. Only rule cues allowed anticipating condition. Position anticipation of but not its Rule elicited fastest most accurate performance for both...