Albrecht, Thorsten

[["dc.bibliographiccitation.firstpage","672"],["dc.bibliographiccitation.issue","2"],["dc.bibliographiccitation.journal","Consciousness and Cognition"],["dc.bibliographiccitation.lastpage","673"],["dc.bibliographiccitation.volume","19"],["dc.contributor.author","Albrecht, Thorsten"],["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","In this issue of Consciousness and Cognition, Bachmann (2010) comments on our study (Albrecht, Klapötke, & Mattler, 2010), which revealed two groups of observers with qualitative individual differences in metacontrast masking that are enhanced by perceptual learning. We are pleased that our study receives this attention and even more about Bachmann’s extremely positive comments. In this invited reply we argue that observers seem to be similar only at the beginning of the experiment but they have no choice as to which group to join. Findings strongly recommend to look at the data of individual subjects."],["dc.identifier.doi","10.1016/j.concog.2010.03.010"],["dc.identifier.gro","3151009"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/7818"],["dc.language.iso","en"],["dc.notes.status","final"],["dc.relation.issn","1053-8100"],["dc.title","Individual differences in metacontrast masking: A call for caution when interpreting group data"],["dc.type","journal_article"],["dc.type.internalPublication","unknown"],["dc.type.peerReviewed","yes"],["dspace.entity.type","Publication"]]

[["dc.contributor.author","Berndt, Mareen"],["dc.contributor.author","Mattler, U."],["dc.contributor.author","Albrecht, T."],["dc.date.accessioned","2019-03-14T10:20:10Z"],["dc.date.available","2019-03-14T10:20:10Z"],["dc.date.issued","2013"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/57676"],["dc.language.iso","de"],["dc.notes.status","final"],["dc.relation.conference","46. Herbsttreffen Experimentelle Kognitionspsychologie (HExKoP)"],["dc.relation.date","2013-11-22"],["dc.relation.eventlocation","Göttingen"],["dc.title","Einfluss der Präsentationsdauern von Zielreiz und Maske auf das Auftreten interindividueller Unterschiede bei der Metakontastmaskierung"],["dc.type","lecture"],["dc.type.internalPublication","unknown"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","17"],["dc.bibliographiccitation.journal","Perception"],["dc.bibliographiccitation.lastpage","18"],["dc.bibliographiccitation.volume","38"],["dc.contributor.author","Albrecht, Thorsten"],["dc.contributor.author","Mattler, Uwe"],["dc.date.accessioned","2018-03-02T09:53:57Z"],["dc.date.available","2018-03-02T09:53:57Z"],["dc.date.issued","2009"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/12743"],["dc.language.iso","en"],["dc.notes.status","final"],["dc.title","How do we look at the world? Perceptual learning creates two kinds of observers"],["dc.type","journal_article"],["dc.type.internalPublication","unknown"],["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.contributor.author","Berndt, Mareen"],["dc.contributor.author","Mattler, U."],["dc.contributor.author","Albrecht, T."],["dc.date.accessioned","2019-03-14T10:27:22Z"],["dc.date.available","2019-03-14T10:27:22Z"],["dc.date.issued","2016"],["dc.description.abstract","By analyzing individual data, Albrecht and colleagues found qualitative inter-individual differences in studies with metacontrast masking, appearing in phenomenological perception as well as in discrimination performance (Albrecht & Mattler, 2012a, 2012b). They used the metacontrast paradigm, where two stimuli are presented sequentially and the visibility of the first stimulus (target) is reduced due to the appearance of the second stimulus (mask). The visibility is a function of the stimulus-onset-asynchrony (SOA). Participants differ in that respect whether the visibility of the target increases with increasing SOA (type A) or whether it is U-shaped (type B). These differences in the objective performance correlate with differences in the phenomenological experience (apparent motion vs. negative afterimage) as well as in the response criteria. A first ERP study also indicated differences in the sensory neural processing. This study aims to clarify whether these neural differences reflect either a different intentional attention on experimental stimuli (top-down) or a different bottom-up processing. For this, participants attended two sessions. In the first session metacontrast stimuli were presented but they had to focus the fixation point and detect an occasionally appearing color change (condition “without attention”). The experimental design in the second session was identical to the first, but participants had to focus their attention on the metacontrast stimuli and to discriminate the shape of the target (condition “with attention”). We expect to find group differences between type A and type B participants in the condition “with attention” and replicate data of the first ERP study. Finding these differences in the condition “without attention” as well would indicate a bottom-up processing; no differences would indicate a different top-down processing."],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/57677"],["dc.language.iso","en"],["dc.notes.status","final"],["dc.relation.conference","58. Conference of Experimental Psychologists (TeaP)"],["dc.relation.date","2016"],["dc.relation.eventlocation","Heidelberg"],["dc.title","The Role of Attention in Processing of Visual Stimuli in Metacontrast Masking"],["dc.type","lecture"],["dc.type.internalPublication","unknown"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","1222"],["dc.bibliographiccitation.issue","3"],["dc.bibliographiccitation.journal","Consciousness and Cognition"],["dc.bibliographiccitation.lastpage","1231"],["dc.bibliographiccitation.volume","21"],["dc.contributor.author","Albrecht, Thorsten"],["dc.contributor.author","Mattler, Uwe"],["dc.date.accessioned","2017-09-07T11:51:37Z"],["dc.date.available","2017-09-07T11:51:37Z"],["dc.date.issued","2012"],["dc.description.abstract","In metacontrast masking target visibility is modulated by the time until a masking stimulus appears. The effect of this temporal delay differs across participants in such a way that individual human observers’ performance shows distinguishable types of masking functions which remain largely unchanged for months. Here we examined whether individual differences in masking functions depend on different response criteria in addition to differences in discrimination sensitivity. To this end we reanalyzed previously published data and conducted a new experiment for further data analyses. Our analyses demonstrate that a distinction of masking functions based on the type of masking stimulus is superior to a distinction based on the target–mask congruency. Individually different masking functions are based on individual differences in discrimination sensitivities and in response criteria. Results suggest that individual differences in metacontrast masking result from individually different criterion contents."],["dc.identifier.doi","10.1016/j.concog.2012.04.006"],["dc.identifier.gro","3151017"],["dc.identifier.pmid","22579496"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/7827"],["dc.language.iso","en"],["dc.notes.status","final"],["dc.relation.issn","1053-8100"],["dc.title","Individual differences in metacontrast masking regarding sensitivity and response bias"],["dc.type","journal_article"],["dc.type.internalPublication","unknown"],["dc.type.peerReviewed","yes"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","1"],["dc.bibliographiccitation.issue","5"],["dc.bibliographiccitation.journal","Journal of Vision"],["dc.bibliographiccitation.lastpage","24"],["dc.bibliographiccitation.volume","12"],["dc.contributor.author","Albrecht, Thorsten"],["dc.contributor.author","Mattler, Uwe"],["dc.date.accessioned","2017-09-07T11:51:39Z"],["dc.date.available","2017-09-07T11:51:39Z"],["dc.date.issued","2012"],["dc.description.abstract","When participants discriminate stimuli that are masked by a following stimulus via metacontrast masking, stable individually different masking functions have been found despite identical stimulation conditions.In the present study, in one group of observers objective performance increased with increasing target-mask stimulus onset asynchrony (SOA), whereas in another group performance decreased with increasing SOA. In addition, a group of overachievers showed ceiling effects whereas a group of underachievers hardly exceeded chance levels of performance irrespective of SOA. The differences between observers' objective measures of performance correspond to differences in participants' phenomenological reports of subjective experience. This indicates that participants differ in their access to specific perceptual cues that they use spontaneously to solve the task. When we instructed participants to use only one specific cue, the instructed cue determined participants' objective performance considerably in two experiments. Nevertheless, masking functions remained similar with and without the cued instruction, and the effect of cues depended on the initial masking function of individuals. Findings suggest that individuals with different masking functions differ also in terms of phenomenology, used cues, and response strategy. The relation between subjective experience, reported usage of perceptual cues, and objective performance in the metacontrast masking task deserves further investigation."],["dc.identifier.doi","10.1167/12.5.5"],["dc.identifier.gro","3151030"],["dc.identifier.pmid","22637706"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/7842"],["dc.language.iso","en"],["dc.notes.status","final"],["dc.relation.issn","1534-7362"],["dc.title","Individual differences in subjective experience and objective performance in metacontrast masking"],["dc.type","journal_article"],["dc.type.internalPublication","unknown"],["dc.type.peerReviewed","yes"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","62"],["dc.bibliographiccitation.journal","Perception"],["dc.bibliographiccitation.lastpage","62"],["dc.bibliographiccitation.volume","42"],["dc.contributor.author","Albrecht, Thorsten"],["dc.contributor.author","Krueger, D."],["dc.contributor.author","Mattler, Uwe"],["dc.date.accessioned","2018-03-01T12:19:28Z"],["dc.date.available","2018-03-01T12:19:28Z"],["dc.date.issued","2013"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/12724"],["dc.language.iso","en"],["dc.notes.status","final"],["dc.relation.issn","0301-0066"],["dc.title","Individual differences in metacontrast masking are reflected by activation of distinct fronto-parietal networks"],["dc.type","journal_article"],["dc.type.internalPublication","unknown"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","S89"],["dc.bibliographiccitation.journal","Psychophysiology"],["dc.bibliographiccitation.lastpage","S90"],["dc.bibliographiccitation.volume","46"],["dc.contributor.author","Albrecht, Thorsten"],["dc.contributor.author","Mattler, Uwe"],["dc.date.accessioned","2018-11-07T11:25:27Z"],["dc.date.available","2018-11-07T11:25:27Z"],["dc.date.issued","2009"],["dc.identifier.isi","000269744700501"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/56623"],["dc.notes.status","zu prüfen"],["dc.notes.submitter","Najko"],["dc.publisher","Wiley-blackwell Publishing, Inc"],["dc.publisher.place","Malden"],["dc.relation.conference","49th Annual Meeting of the Society-for-Psychophysiological-Research"],["dc.relation.eventlocation","Berlin, GERMANY"],["dc.relation.issn","0048-5772"],["dc.title","PERCEPTUAL CUES MODULATE RESPONSE CUE EFFECTS ON FRONTAL N200 AMPLITUDE AND RESPONSE ACTIVATION"],["dc.type","conference_abstract"],["dc.type.internalPublication","yes"],["dc.type.peerReviewed","yes"],["dc.type.status","published"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","162"],["dc.bibliographiccitation.journal","Consciousness and cognition"],["dc.bibliographiccitation.lastpage","180"],["dc.bibliographiccitation.volume","42"],["dc.contributor.author","Albrecht, Thorsten"],["dc.contributor.author","Mattler, Uwe"],["dc.date.accessioned","2018-03-01T10:49:39Z"],["dc.date.available","2018-03-01T10:49:39Z"],["dc.date.issued","2016"],["dc.description.abstract","Metacontrast masking occurs when a mask follows a target stimulus in close spatial proximity. Target visibility varies with stimulus onset asynchrony (SOA) between target and mask in individually different ways leading to different masking functions with corresponding phenomenological reports. We used individual differences to determine the processes that underlie metacontrast masking. We assessed individual masking functions in a masked target discrimination task using different masking conditions and applied factor-analytical techniques on measures of sensitivity. Results yielded two latent variables that (1) contribute to performance with short and long SOA, respectively, (2) relate to specific stimulus features, and (3) differentially correlate with specific subjective percepts. We propose that each latent variable reflects a specific process. Two additional processes may contribute to performance with short and long SOAs, respectively. Discrimination performance in metacontrast masking results from individually different weightings of two to four processes, each of which contributes to specific subjective percepts."],["dc.identifier.doi","10.1016/j.concog.2016.03.006"],["dc.identifier.pmid","27010825"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/12721"],["dc.language.iso","en"],["dc.notes.status","final"],["dc.relation.eissn","1090-2376"],["dc.title","Individually different weighting of multiple processes underlies effects of metacontrast masking"],["dc.type","journal_article"],["dc.type.internalPublication","unknown"],["dspace.entity.type","Publication"]]