Alle Publikationen
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2016
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(2016): Recollection reduces unitised familiarity effect. In: Memory (Hove, England) 24 (4), S. 535-547. DOI: 10.1080/09658211.2015.1021258
DOI: http://www.ncbi.nlm.nih.gov/pubmed/25793354 Abstract: Two types of encoding tasks have been employed in previous research to investigate the beneficial effect of unitisation on familiarity-based associative recognition (unitised familiarity effect), namely the compound task and the interactive imagery task. Here we show how these two tasks could differentially engage subsequent recollection-based associative recognition and consequently lead to the turn-on or turn-off of the unitised familiarity effect. In the compound task, participants studied unrelated word pairs as newly learned compounds. In the interactive imagery task, participants studied the same word pairs as interactive images. An associative recognition task was used in combination with the Remember/Know procedure to measure recollection-based and familiarity-based associative recognition. The results showed that the unitised familiarity effect was present in the compound task but was absent in the interactive imagery task. A comparison of the compound and the interactive imagery task revealed a dramatic increase in recollection-based associative recognition for the interactive imagery task. These results suggest that unitisation could benefit familiarity-based associative recognition; however, this effect will be eliminated when the memory trace formed is easily accessed by strong recollection without the need for a familiarity assessment. zitiert von 5
2015
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(2015): An Information-Based Approach to Consciousness. Mental State Decoding. DOI: 10.15502/9783958570276
DOI: https://doi.org/10.15502/9783958570276 Abstract: The debate on the neural correlates of visual consciousness often focuses on the question of which additional processing has to happen for a visual representation to enter consciousness. However, a related question that has only rarely been addressed is which brain regions directly encode specific contents of consciousness. The search for these core neural correlates of contents of consciousness (NCCCs) requires establishing a mapping between sensory experiences and population measures of brain activity in specific brain regions. One approach for establishing this mapping is multivariate decoding. Using this technique, several properties of NCCCs have been investigated. Masking studies have revealed that information about sensory stimuli can be decoded from the primary visual cortex, even if the stimuli cannot be consciously identified by a subject. This suggests that information that does not reach awareness can be encapsulated in early visual stages of processing. Visual imagery representations and veridical perception share similar neural representations in higher-level visual regions, suggesting that these regions are directly related to the encoding of conscious visual experience. But population signals in these higher-level visual regions cannot be the sole carriers of visual experiences because they are invariant to low-level visual features. We found no evidence for increased encoding of sensory information in the prefrontal cortex when a stimulus reaches awareness. In general, we found no role of the prefrontal cortex in encoding sensory experiences at all. However, the improved discrimination of sensory information during perceptual learning could be explained by an improved read-out by the prefrontal cortex. One possible implication is that prefrontal cortical regions do not participate in the encoding of sensory features per se. Instead they may be relevant in making decisions about sensory features, without exhibiting a re-representation of sensory information.
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(2015): Developmental social robotics. An applied perspective. In: International Journal of Social Robotics 7 (4), S. 417-420. DOI: 10.1007/s12369-015-0312-0
DOI: https://doi.org/10.1007/s12369-015-0312-0 Abstract: This article provides an overview of the special issue on developmental social robotics. The aim of this special issue is not to contribute in the understanding of fundamental process of social development. The focus is to identify and address some of the important milestones, steps, and building blocks of development of social intelligence, and how to adapt, extend and apply them into robotics by identifying as well as addressing the underlying research and development (R&D) challenges when combination of such blocks should be functioning together. The special issue consists of high quality research papers along three broader categories: (i) Methodologies for embodiment of some basic social developmental blocks (ii) User perception, evaluation and design guidelines for social embodiment of robots with some basic social developmental blocks (iii) Potential societal applications of social robots embodied with some of the social developmental blocks. This special issue has touched an important aspect of developmental robotics: the applied side in the domain of social robotics. The special issue incorporates a balance of high quality research papers on embodiment mechanisms, evaluations, design guidelines and applications of some of the fundamental building blocks and capabilities constituting the development of social intelligence. (PsycINFO Database Record (c) 2016 APA, all rights reserved)
2011
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(2011): Understanding the Link Between Spatial Distance and Social Distance. In: Social Psychology 42 (3), S. 185-192. DOI: 10.1027/1864-9335/a000062
Abstract: Why do people use spatial language to describe social relationships? In particular, to what extent do they anchor their thoughts about friendship in terms of space? Three experiments used drawing and estimation tasks to further explore the conceptual structure of social distance using friendship as a manipulation. In all three experiments, participants read short narratives and then drew what they imagined happened during the narrative and estimated passing time. Overall, the results of these exploratory studies suggest that the conceptual structure of friendship is linked to thought about space in terms of path drawing. Results are discussed in light of social distance and intercharacter interaction. zitiert von 33
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