Klapötke, Susan

[["dc.bibliographiccitation.firstpage","197"],["dc.bibliographiccitation.journal","NeuroImage"],["dc.bibliographiccitation.lastpage","208"],["dc.bibliographiccitation.volume","64"],["dc.contributor.author","Krüger, Daniel"],["dc.contributor.author","Klapötke, Susan"],["dc.contributor.author","Bode, Stefan"],["dc.contributor.author","Mattler, Uwe"],["dc.date.accessioned","2017-09-07T11:51:36Z"],["dc.date.available","2017-09-07T11:51:36Z"],["dc.date.issued","2012"],["dc.description.abstract","The inverse priming paradigm can be considered one example which demonstrates the operation of control processes in the absence of conscious experience of the inducing stimuli. Inverse priming is generated by a prime that is followed by a mask and a subsequent imperative target stimulus. With “relevant” masks that are composed of the superposition of both prime alternatives, the inverse priming effect is typically larger than with “irrelevant” masks that are free of task-relevant features. We used functional magnetic resonance imaging (fMRI) to examine the neural substrates that are involved in the generation of inverse priming effects with relevant and irrelevant masks. We found a network of brain areas that is accessible to unconscious primes, including supplementary motor area (SMA), anterior insula, middle cingulate cortex, and supramarginal gyrus. Activation of these brain areas were involved in inverse priming when relevant masks were used. With irrelevant masks, however, only SMA activation was involved in inverse priming effects. Activation in SMA correlated with inverse priming effects of individual participants on reaction time, indicating that this brain area reflects the size of inverse priming effects on the behavioral level. Findings are most consistent with the view that a basic inhibitory mechanism contributes to inverse priming with either type of mask and additional processes contribute to the effect with relevant masks. This study provides new evidence showing that cognitive control operations in the human cortex take account of task relevant stimulus information even if this information is not consciously perceived."],["dc.identifier.doi","10.1016/j.neuroimage.2012.09.018"],["dc.identifier.gro","3151008"],["dc.identifier.pmid","22989624"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/7817"],["dc.language.iso","en"],["dc.notes.status","final"],["dc.relation.issn","1053-8119"],["dc.title","Neural correlates of control operations in inverse priming with relevant and irrelevant masks"],["dc.type","journal_article"],["dc.type.internalPublication","unknown"],["dc.type.peerReviewed","yes"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","882"],["dc.bibliographiccitation.issue","3"],["dc.bibliographiccitation.journal","Consciousness and Cognition"],["dc.bibliographiccitation.lastpage","900"],["dc.bibliographiccitation.volume","20"],["dc.contributor.author","Klapötke, Susan"],["dc.contributor.author","Krüger, Daniel"],["dc.contributor.author","Mattler, Uwe"],["dc.date.accessioned","2017-09-07T11:51:37Z"],["dc.date.available","2017-09-07T11:51:37Z"],["dc.date.issued","2011"],["dc.description.abstract","Visual stimuli that are made invisible by a following mask can nonetheless affect motor responses. To localize the origin of these target priming effects we used the psychological refractory period paradigm. Participants classified tones as high or low, and responded to the position of a visual target that was preceded by a prime. The stimulus onset asynchrony (SOA) between both tasks varied. In Experiment 1 the tone task was followed by the position task and SOA dependent target priming effects were observed. When the visual position task preceded the tone task in Experiment 2, with short SOA the priming effect propagated entirely to the tone task yielding faster responses to tones on visually congruent trials and delayed responses to tones on visually incongruent trials. Together, results suggest that target priming effects arise from processing before and at the level of the central bottleneck such as sensory analysis and response selection."],["dc.identifier.doi","10.1016/j.concog.2011.04.008"],["dc.identifier.gro","3151015"],["dc.identifier.pmid","21570320"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/7825"],["dc.language.iso","en"],["dc.notes.status","final"],["dc.relation.issn","1053-8100"],["dc.subject","Reaction time; Priming; Information processing; Consciousness"],["dc.title","A PRP-study to determine the locus of target priming effects"],["dc.type","journal_article"],["dc.type.internalPublication","unknown"],["dc.type.peerReviewed","yes"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","656"],["dc.bibliographiccitation.issue","2"],["dc.bibliographiccitation.journal","Consciousness and Cognition"],["dc.bibliographiccitation.lastpage","666"],["dc.bibliographiccitation.volume","19"],["dc.contributor.author","Albrecht, Thorsten"],["dc.contributor.author","Klapötke, Susan"],["dc.contributor.author","Mattler, Uwe"],["dc.date.accessioned","2017-09-07T11:51:37Z"],["dc.date.available","2017-09-07T11:51:37Z"],["dc.date.issued","2009"],["dc.description.abstract","In vision research metacontrast masking is a widely used technique to reduce the visibility of a stimulus. Typically, studies attempt to reveal general principles that apply to a large majority of participants and tend to omit possible individual differences. The neural plasticity of the visual system, however, entails the potential capability for individual differences in the way observers perform perceptual tasks. We report a case of perceptual learning in a metacontrast masking task that leads to the enhancement of two types of adult human observers despite identical learning conditions. In a priming task both types of observers exhibited the same priming effects, which were insensitive to learning. Findings suggest that visual processing of target stimuli in the metacontrast masking task is based on neural levels with sufficient plasticity to enable the development of two types of observers, which do not contribute to processing of target stimuli in the priming task."],["dc.identifier.doi","10.1016/j.concog.2009.12.002"],["dc.identifier.gro","3151014"],["dc.identifier.pmid","20044281"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/7824"],["dc.language.iso","en"],["dc.notes.status","final"],["dc.relation.issn","1053-8100"],["dc.title","Individual differences in metacontrast masking are enhanced by perceptual learning"],["dc.type","journal_article"],["dc.type.internalPublication","unknown"],["dc.type.peerReviewed","yes"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","866"],["dc.bibliographiccitation.issue","3"],["dc.bibliographiccitation.journal","Consciousness and Cognition"],["dc.bibliographiccitation.lastpage","881"],["dc.bibliographiccitation.volume","20"],["dc.contributor.author","Krüger, Daniel"],["dc.contributor.author","Klapötke, Susan"],["dc.contributor.author","Mattler, Uwe"],["dc.date.accessioned","2017-09-07T11:51:36Z"],["dc.date.available","2017-09-07T11:51:36Z"],["dc.date.issued","2010"],["dc.description.abstract","Visual stimuli (primes) that are made invisible by masking can affect motor responses to a subsequent target stimulus. When a prime is followed by a mask which is followed by a target stimulus, an inverse priming effect (or negative compatibility effect) has been found: Responses are slow and frequently incorrect when prime and target stimuli are congruent, but fast and accurate when prime and target stimuli are incongruent. To functionally localize the origins of inverse priming effects, we applied the psychological refractory period (PRP-) paradigm which distinguishes a perceptual level, a central bottleneck, and a level of motor execution. Two dual-task experiments were run with the PRP-paradigm to localize the inverse priming effect relative to the central bottleneck. Together, results of the Effect-Absorption and the Effect-Propagation Procedure suggest that inverse priming effects are generated by perceptual mechanisms. We suggest two perceptual mechanisms as the source of inverse priming effects."],["dc.identifier.doi","10.1016/j.concog.2010.09.014"],["dc.identifier.gro","3151007"],["dc.identifier.pmid","20947385"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/7816"],["dc.language.iso","en"],["dc.notes.status","final"],["dc.relation.issn","1053-8100"],["dc.subject","Priming Masking Consciousness Inhibition"],["dc.title","PRP-paradigm provides evidence for a perceptual origin of the negative compatibility effect"],["dc.type","journal_article"],["dc.type.internalPublication","unknown"],["dc.type.peerReviewed","no"],["dspace.entity.type","Publication"]]