| 1. |
- Balkenius, Christian, et al.
(författare)
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Basic Visual Reflexes for a Humanoid Robot
- 2021
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Ingår i: Proceedings of the 16'th SweCog Conference. - 1653-2325. - 9789198366785 ; 2021:2, s. 19-21
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Konferensbidrag (refereegranskat)
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| 2. |
- Eck, Julia, et al.
(författare)
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Instant disembodiment of virtual body parts
- 2022
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Ingår i: Attention, Perception & Psychophysics. - : Springer Nature. - 1943-3921 .- 1943-393X. ; 84:8, s. 2725-2740
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Tidskriftsartikel (refereegranskat)abstract
- Evidence from multisensory body illusions suggests that body representations may be malleable, for instance, by embodyingexternal objects. However, adjusting body representations to current task demands also implies that external objects becomedisembodied from the body representation if they are no longer required. In the current web-based study, we induced theembodiment of a two-dimensional (2D) virtual hand that could be controlled by active movements of a computer mouse or ona touchpad. Following initial embodiment, we probed for disembodiment by comparing two conditions: Participants eithercontinued moving the virtual hand or they stopped moving and kept the hand still. Based on theoretical accounts that conceptualizebody representations as a set of multisensory bindings, we expected gradual disembodiment of the virtual hand if the bodyrepresentations are no longer updated through correlated visuomotor signals. In contrast to our prediction, the virtual hand wasinstantly disembodied as soon as participants stopped moving it. This result was replicated in two follow-up experiments. Theobserved instantaneous disembodiment might suggest that humans are sensitive to the rapid changes that characterize action andbody in virtual environments, and hence adjust corresponding body representations particularly swiftly.
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| 3. |
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| 4. |
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From a praxis perspective: Being and becoming a doctoral supervisor : (JPHE Special Issue)
- 2023
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Samlingsverk (redaktörskap) (refereegranskat)abstract
- This special issue brings together a unique collection of papers on doctoral supervision, including work from researchers both outside the pedagogy discipline as well as those centred within it. The contributions include research on factors that contribute to supervisor stress, professional learning programs for supervisors, advising ancestry, gender and power in supervision, and the formation of supervisors more generally.
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| 5. |
- Kalckert, Andreas
(författare)
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Moving a rubber hand : the sense of ownership and agency in bodily self-recognition
- 2014
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Doktorsavhandling (övrigt vetenskapligt/konstnärligt)abstract
- Most of us take for granted that our body is our body. One typically experiences one’s body as something belonging just to oneself, as something that can only be “me”. However, this poses a fundamental problem in philosophy and psychology: how do we know that the body is our own? It has been suggested that two distinct experiences of our own body help us recognize it as such: the sense of ownership, that is the experience that a limb is part of one’s body, and the sense of agency, that is the experience of being able to voluntarily control limb movement. In the present thesis we introduce a new version of the classical rubber hand illusion that is based on finger movements instead of stroking and systematically investigate how ownership and agency contributes to bodily self-recognition. To induce “the moving rubber hand illusion” participants control the movements of the index finger of a right wooden model hand in full view by moving their own right index finger, which is hidden from view. The illusion is quantified subjectively with visual analogue rating scales and behaviourally as changes in manually indicated sensed hand position (“proprioceptive drift”). In 9 separate experiments involving a total of 352 healthy volunteers we first characterized the basic constrains of the illusion. Secondly, we examined the relationship of ownership and agency. And finally, investigate a possible relationship between the illusion and individual differences in delusion proneness (using Peter’s Delusion Inventory). Our results show that synchronized movements of the model’s index finger and the participant’s index can trigger a strong illusory feeling of ownership of the model hand and robust experience of agency. The moving rubber hand illusion is similarly strong as the classical version, and follows similar temporal, spatial and anatomical rules. Asynchronous seen and felt finger movements, a too great distance between the real and model hands (≥27 cm), or the model placed in an anatomically implausible position abolishes the ownership-illusion. We also found that ownership and agency can be dissociated. Unlike ownership, agency can be experienced for the model hand when it is when placed in an anatomically implausible position. And ownership can be experienced irrespective of the hand moving actively or passively, so with or without agency. Furthermore only ownership, but not agency ratings correlate with the proprioceptive drift. Finally, we observed that delusion prone-individuals tend to give generally higher overall ratings on agency, when they experience the hand moved passively. Collectively, these observations advance our understanding of how ownership and agency contribute to bodily self-recognition. Ownership and agency constitute different processes: Integration of spatio-temporally congruent signals from moving limbs determine the sense of ownership and a match of movement intentions and feedback determines the sense of agency. These results offer new ways to study bodily self-recognition both at the behavioural and neural level.
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| 6. |
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| 7. |
- Nilsson, Martin, et al.
(författare)
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Region‐of‐interest analysis approaches in neuroimaging studies of body ownership : An activation likelihood estimation meta‐analysis
- 2021
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Ingår i: European Journal of Neuroscience. - : John Wiley & Sons. - 0953-816X .- 1460-9568. ; 54:11, s. 7974-7988
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Tidskriftsartikel (refereegranskat)abstract
- How do we feel that we own our body? By manipulating the integration of multisensory signals and creating the illusory experience of owning external body parts and entire bodies, researchers have investigated the neurofunctional correlates of body ownership. Recent attempts to synthesize the neuroimaging literature of body ownership through meta-analysis have shown partly inconsistent results. A large proportion of functional magnetic resonance imaging (fMRI) findings on body ownership include analyses based on regions of interest (ROIs). This approach can produce inflated findings when results are synthesized in meta-analyses. We conducted a systematic search of the fMRI literature of ownership of body parts and entire bodies. Three activation likelihood estimation (ALE) meta-analyses were conducted, testing the impact of including ROI-based findings. When both whole-brain and ROI-based results were included, frontal and posterior parietal multisensory areas were associated with body ownership. When only ROI-based results were included, larger areas of the frontal and posterior parietal cortices and the middle occipital gyrus were associated with body ownership. A whole-brain meta-analysis, excluding ROI-based results, found no significant convergence of activation across the brain. These findings highlight the difficulty of quantitatively synthesizing a neuroimaging field where a large part of the literature is based on findings from ROI-based analyses. We discuss these findings in the light of current practices within this field of research and highlight current problems of meta-analytic approaches of body ownership. We recommend the sharing of unthresholded data as a means to facilitate future meta-analyses of the neuroimaging literature of body ownership.
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| 8. |
- Pfister, Roland, et al.
(författare)
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How to lose a hand : Sensory updating drives disembodiment
- 2021
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Ingår i: Psychonomic Bulletin & Review. - : Springer Nature. - 1069-9384 .- 1531-5320. ; 28:3, s. 827-833
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Tidskriftsartikel (refereegranskat)abstract
- Body representations are readily expanded based on sensorimotor experience. A dynamic view of body representations, however, holds that these representations cannot only be expanded but that they can also be narrowed down by disembodying elements of the body representation that are no longer warranted. Here we induced illusory ownership in terms of a moving rubber hand illusion and studied the maintenance of this illusion across different conditions. We observed ownership experience to decrease gradually unless participants continued to receive confirmatory multisensory input. Moreover, a single instance of multisensory mismatch – a hammer striking the rubber hand but not the real hand – triggered substantial and immediate disembodiment. Together, these findings support and extend previous theoretical efforts to model body representations through basic mechanisms of multisensory integration. They further support an updating model suggesting that embodied entities fade from the body representation if they are not refreshed continuously.
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| 9. |
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Proceedings of the 16th SweCog Conference
- 2021
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Proceedings (redaktörskap) (refereegranskat)abstract
- We welcome you to the 16’th SweCog conference! After the 2020 meeting had to be cancelled, due to the unusual circumstances of facing a worldwide pandemic, we look forward to finally meet again, although the pandemic makes us meet virtually and not in person. Fittingly, an emerging theme of this year’s meeting is virtual reality. A technology which creates new ways of interacting with each other and with the world. It is not only a subject of active research, but increasingly also a medium for new creative experiments or applications, as evidenced by one of our keynote speakers this year. VR has become now a more widely available tool in different areas of research, and probably has made its full and final impact not yet. SweCog 2021 also features a nod to the word usability day. As technology becomes increasingly present in our daily lives, not the least emphasized through the pandemic, we believe that cognitive science has an important role as a field of research informing the design of usable digital artifacts. As the University of Skövde stands as one example of the close relation between cognitive science and user experience design, we take the opportunity to celebrate the topic of Cognitoon and UX. This meeting has been organized jointly by the Interaction lab and the Cognitive Neuroscience lab of the University of Skövde. We are glad to see this interaction happening between the two labs and the two fields. We hope this is not perceived as an “invasion” of the brain scientists documenting the failure of cognitive science as a field (see Nunez et al., 2019), but rather a collaborative move of finding synergies in our research. In this spirit, we hope our meetings continue to bring people together from different parts of Sweden, from different departments, and maybe also from more different disciplines, to discuss our latest research. And despite our enthusiasm for virtual reality, we sincerely hope the next meeting will allow us to meet again in person.
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