Research Topics
| S PollmannSummaryAffiliation: Max Planck Institute of Cognitive Neuroscience Country: Germany Publications
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Detail Information
Publications
The role of the corpus callosum in visual orienting: importance of interhemispheric visual transferS Pollmann
Max Planck Institute of Cognitive Neuroscience, Leipzig, Germany
Neuropsychologia 36:763-74. 1998..B. is not. The data suggest that the reversal of the contralateral distractor asymmetry in L.B. is due to the disruption of ipsilateral visual input to the right hemisphere...- Splenial lesions lead to supramodal target detection deficitsS Pollmann
Day Clinic of Cognitive Neurology, University of Leipzig, Leipzig, Germany
Neuropsychology 18:710-8. 2004..After splenial lesions, these signals may not reach the contralateral hemisphere, leading to supramodal deficits in target detection, especially under distracting conditions... - Separating distractor rejection and target detection in posterior parietal cortex--an event-related fMRI study of visual markingS Pollmann
Day Clinic of Cognitive Neurology, University of Leipzig, Liebigstrasse 22a, D 04103 Leipzig, Germany
Neuroimage 18:310-23. 2003..The study provides evidence for the functional segregration of brain regions within the posterior parietal lobe... - Left and right occipital cortices differ in their response to spatial cueingStefan Pollmann
Cognitive Neurology, AG Experimental Neuropsychology, University of Leipzig, Liebigstrasse 22a, D 04103 Leipzig, Germany
Neuroimage 18:273-83. 2003.... - Dichotic listening in patients with splenial and nonsplenial callosal lesionsStefan Pollmann
Day Clinic of Cognitive Neurology, University of Leipzig and Max Planck Institute of Cognitive Neuroscience, Germany
Neuropsychology 16:56-64. 2002..However, further studies should investigate whether callosal fibers between primary and secondary auditory cortices, or between higher level multimodal cortices, are vital for the detection of left ear targets in dichotic listening... - Extinction-like effects in normals: independence of localization and response selectionS Pollmann
Max Planck Institute of Cognitive Neuroscience, Leipzig, Germany
Brain Cogn 44:324-41. 2000..In contradistinction to our previous results, low-salience distractors had no effect on pop-out target search. This showed that explicit spatial localization demands lead to low-salience distractor interference on pop-out search... - Dissociation of memory retrieval and search processes: an event-related fMRI studyS Pollmann
Max Planck Institute of Cognitive Neuroscience, D 04103 Leipzig, Germany
Microsc Res Tech 51:29-38. 2000..All areas with cue-associated BOLD onset, suggesting involvement in retrieval, showed prolonged BOLD activation, suggesting that they also support maintenance of the retrieved information... - Object working memory and visuospatial processing: functional neuroanatomy analyzed by event-related fMRIS Pollmann
Max Planck Institute of Cognitive Neuroscience, Leipzig, Germany
Exp Brain Res 133:12-22. 2000..Selective delay activation was observed anterior to the FEF and in the ascending part of the IPS. Right dorsolateral prefrontal cortex was involved in goal-directed visual search, but showed no delay activity... - Redundancy gains for visual search after complete commissurotomyS Pollmann
Department of Neurology, Max Planck Institute of Cognitive Neuroscience, Leipzig, Germany
Neuropsychology 13:246-58. 1999..The authors suggest that the enhancement of the bilateral RTE comes about by neural coactivation, which is especially pronounced when the slower hemisphere elicits the response... - A fronto-posterior network involved in visual dimension changesS Pollmann
Max Planck Institute of Cognitive Neuroscience, Leipzig, Germany
J Cogn Neurosci 12:480-94. 2000..This pattern suggests control of cross-dimensional attention shifts by the frontopolar cortex, modulating visual cortical processing by increased activation in higher-tier visual areas and suppression of activation in lower-tier areas... - Event-related fMRI: comparison of conditions with varying BOLD overlapS Pollmann
Max Planck Institute of Cognitive Neuroscience, Leipzig, Germany
Hum Brain Mapp 9:26-37. 2000..In the present study, task-related increases in the BOLD response were detected equally well with substantial BOLD overlap as with mostly nonoverlapping BOLD responses... - ERP and fMRI correlates of endogenous and exogenous focusing of visual-spatial attentionE Natale
Day Clinic of Cognitive Neurology, University of Leipzig, Leipzig, Germany
Eur J Neurosci 23:2511-21. 2006..In contrast, the effects of those changes, resulting in a modulation of activation in visual occipital areas, are indexed by P1... - Prefrontal cortex activation in task switching: an event-related fMRI studyA Dove
Max Planck Institute of Cognitive Neuroscience, Stephanstr 1a, D 04103, Leipzig, Germany
Brain Res Cogn Brain Res 9:103-9. 2000..However, the results also showed that this region is neither the only region involved in task switching nor a region specifically involved in task switching... - Switching between dimensions, locations, and responses: the role of the left frontopolar cortexS Pollmann
Day Clinic of Cognitive Neurology and Max Planck Institute of Cognitive Neuroscience, University of Leipzig, Leipzig, D 04103, Germany
Neuroimage 14:S118-24. 2001..Further experiments will have to show whether LFPC is actively involved in the reallocation of attentional resources or whether it rather has a monitoring function... - Top-down controlled visual dimension weighting: an event-related fMRI studyR Weidner
Department of Experimental Psychology, University of Leipzig, Leipzig, Germany
Cereb Cortex 12:318-28. 2002.... - Covert reorienting and inhibition of return: an event-related fMRI studyJöran Lepsien
Max Planck Institute of Cognitive Neuroscience, Leipzig, Germany
J Cogn Neurosci 14:127-44. 2002..Pre-SEF and pre-FEF areas were involved both in covert reorienting and IOR. The supramarginal gyri were bilaterally involved in IOR, with the right supramarginal gyrus additionally involved in covert reorienting... - The neural basis of the bilateral distribution advantageStefan Pollmann
University of Leipzig, Day Clinic of Cognitive Neurology, Liebigstr 22a, 04103 Leipzig, Germany
Exp Brain Res 153:322-33. 2003.... - Neural basis of redundancy effects in visual object categorizationJulia Reinholz
Day Clinic of Cognitive Neurology, University of Leipzig, Leipzig, Germany
Neurosci Lett 412:123-8. 2007..e. in the Fusiform Face Area (FFA) for pictures of faces and in the Parahippocampal Place Areas (PPAs) for pictures of buildings. These results suggest an involvement of visual object-selective areas in the behavioral redundancy gain... - Auditory target detection in dichotic listening involves the orbitofrontal and hippocampal paralimbic beltsStefan Pollmann
University of Leipzig, Day Clinic of Cognitive Neurology, Germany
Cereb Cortex 14:903-13. 2004..The data show the importance of the orbitofrontal and hippocampal paralimbic belts for auditory stimulus decision processes based on ambivalent sensory information... - Differential activation of object-selective visual areas by passive viewing of pictures and wordsJulia Reinholz
Day Clinic of Cognitive Neurology, University of Leipzig, Germany
Brain Res Cogn Brain Res 24:702-14. 2005..Taken together, these results show that names of pictures do not automatically activate the corresponding object-selective areas... - Anterior prefrontal cortex contributions to attention controlStefan Pollmann
University Hospital Leipzig, Day Clinic of Cognitive Neurology, Germany
Exp Psychol 51:270-8. 2004..This process may occur in the absence of awareness and may support visual dimension weighting by inhibition of the old relevant dimension in favor of the new dimension... - Perception modulates auditory cortex activationStefan Pollmann
Department of Experimental Psychology, Otto von Guericke University Magdeburg, Magdeburg, Germany
Neuroreport 17:1779-82. 2006..This shows that activity at the earliest stage of cortical auditory processing reflects subjective perceptual decisions. Whether this activation is driven by bottom-up or top-down factors remains to be investigated... - Interhemispheric resource sharing: decreasing benefits with increasing processing efficiencyMarianne Maertens
Day Clinic of Cognitive Neurology, University Clinic Leipzig, Leipzig, Germany
Brain Cogn 58:183-92. 2005..Thus, the size of the BDA is determined by both, processing efficiency and task complexity... - Shift of activity from attention to motor-related brain areas during visual learningStefan Pollmann
Department of Experimental Psychology, Otto von Guericke University, Postbox 4120, 39016 Magdeburg, Germany
Nat Neurosci 8:1494-6. 2005.... - Selective and interactive neural correlates of visual dimension changes and response changesStefan Pollmann
Department of Experimental Psychology, University of Magdeburg, Germany
Neuroimage 30:254-65. 2006.... - fMRI reveals a common neural substrate of illusory and real contours in V1 after perceptual learningMarianne Maertens
Otto von Guericke University, Magdeburg, Germany
J Cogn Neurosci 17:1553-64. 2005..The behavioral specificity of the learning effects supports an involvement of V1 in perceptual learning, and not in unspecific attentional effects... - Division of labor between the hemispheres for complex but not simple tasks: an implemented connectionist modelPadraic Monaghan
Institute for Adaptive and Neural Computation, Division of Informatics, University of Edinburgh, Scotland
J Exp Psychol Gen 132:379-99. 2003..The authors show that relating computational models to behavioral and imaging data proves fruitful for understanding hemispheric processing and generating testable hypotheses... - Determining subprocesses of visual feature search with reaction time modelsGisela Müller-Plath
Max Planck Institute of Cognitive Neuroscience, Leipzig, Germany
Psychol Res 67:80-105. 2003..The model provides an explanation for the strong variation in the slope of reaction time functions, which is not based on an explicit distinction between parallel and serial search processes... - Illusory contours do not pass through the "blind spot"Marianne Maertens
New York University, NY, USA
J Cogn Neurosci 19:91-101. 2007..The current results substantiate the assumption that neural activity in area V1 is closely related to our phenomenal experience of illusory contours in particular, and to the construction of our subjective percepts in general...