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Sense of Ownership

Preeti Raghavan, Daniel Geller, Nina Guerrero, Viswanath Aluru, Joseph P Eimicke, Jeanne A Teresi, Gbenga Ogedegbe, Anna Palumbo, Alan Turry
: Stroke is a leading cause of disability worldwide. It leads to a sudden and overwhelming disruption in one's physical body, and alters the stroke survivors' sense of self. Long-term recovery requires that bodily perception, social participation and sense of self are restored; this is challenging to achieve, particularly with a single intervention. However, rhythmic synchronization of movement to external stimuli facilitates sensorimotor coupling for movement recovery, enhances emotional engagement and has positive effects on interpersonal relationships...
2016: Frontiers in Human Neuroscience
Gus P Cairns, Kane Race, Pedro Goicochea
Pre-exposure prophylaxis (PrEP) has been and continues to be an intervention that causes controversy and debate between stakeholders involved in providing or advocating for it, and within communities in need of it. These controversies extend beyond the intrinsically complex issues of making it available. In this commentary, some of the possible roots of the air of dissent and drama that accompanies PrEP are explored. The similarities between the controversies that dogged the earliest human trials of PrEP and the ones we see today in the era of licensing and implementation are explored...
2016: Journal of the International AIDS Society
Shaun Gallagher, Dylan Trigg
We review the distinction between sense of agency and sense of ownership, and then explore these concepts, and their reflective attributions, in schizophrenic symptoms and agoraphobia. We show how the underlying dynamics of these experiences are different across these disorders. We argue that these concepts are complex and cannot be reduced to neural mechanisms, but involve embodied and situated processes that include the physical and social environments. We conclude by arguing that the subjective and intersubjective dimensions of agency and ownership cannot be considered in isolation from one another, but instead form an interdependent pairing...
2016: Frontiers in Human Neuroscience
Joanne Jordan, Louise Rose, Katie N Dainty, Jane Noyes, Bronagh Blackwood
BACKGROUND: Prolonged mechanical ventilation is associated with a longer intensive care unit (ICU) length of stay and higher mortality. Consequently, methods to improve ventilator weaning processes have been sought. Two recent Cochrane systematic reviews in ICU adult and paediatric populations concluded that protocols can be effective in reducing the duration of mechanical ventilation, but there was significant heterogeneity in study findings. Growing awareness of the benefits of understanding the contextual factors impacting on effectiveness has encouraged the integration of qualitative evidence syntheses with effectiveness reviews, which has delivered important insights into the reasons underpinning (differential) effectiveness of healthcare interventions...
October 4, 2016: Cochrane Database of Systematic Reviews
Bekir Enes Demiryürek, Aslı Aksoy Gündogdu, Bilgehan Atılgan Acar, Aybala Neslihan Alagoz
Alien hand syndrome (AHS) is an involuntary and rare neurological disorder emerges at upper extremity. AHS is a disconnection syndrome with the symptoms of losing sense of agency and sense of ownership, and presence of involuntary autonomic motor activity. There are frontal, callosal and posterior types of AHS and each of them occurs depend on the lesions of different of the brain. Posterior variant is a rarely encountered AHS type compared to others. AHS, generally regarded as persistent, but rarely maybe observed as paroxysmal...
October 2016: Cognitive Neurodynamics
Felicity Goodyear-Smith
Moving from evidence-based medicine through knowledge translation into evidence-based practice presents many challenges. Implementation research requires collaboration of researchers and end users to adapt interventions in response to different contexts. Such research progresses iteratively in response to feedback, reflection and then action, using theory of change and interactive response to diversity. The proliferation of terminology used to describe this research genre requires development of a robust taxonomy to categorize overlapping concepts where engagement of end users in the research process is core...
September 14, 2016: Family Practice
Shu Imaizumi, Tomohisa Asai, Shinichi Koyama
Senses of ownership (this arm belongs to me) and agency (I am controlling this arm) originate from sensorimotor system. External objects can be integrated into the sensorimotor system following long-term use, and recognized as one's own body. We examined how an (un)embodied prosthetic arm modulates whole-body control, and assessed the components of prosthetic embodiment. Nine unilateral upper-limb amputees participated. Four frequently used their prosthetic arm, while the others rarely did. Their postural sway was measured during quiet standing with or without their prosthesis...
October 2016: Consciousness and Cognition
A A Butler, M E Héroux, S C Gandevia
Knowledge of which body parts belong to us is referred to as the sense of body ownership. There is increasing evidence that this important aspect of human proprioception is highly malleable. Research into ownership of individual body parts was stimulated by Botvinick and Cohen's rubber-hand illusion (Nature 391,1998, 756), which demonstrated that an artificial body part can be incorporated in one's body representation and can cause real body parts to be sensed erroneously. Here, we review key studies that have advanced our understanding of the sense of body ownership, including the important role played by multisensory integration and spatiotemporal congruence of sensory signals...
August 26, 2016: Acta Physiologica
Jane Moeckli, Kenda R Stewart, Sarah Ono, Bruce Alexander, Tyler Goss, Marissa Maier, Phyllis C Tien, M Bryant Howren, Michael E Ohl
PURPOSE: Extension for Community Health Outcomes (ECHO) is a provider-level telemedicine model successfully applied to hepatitis C care, but little is known about its application to Human Immunodeficiency Virus (HIV) care. We performed a mixed-methods evaluation of 3 HIV ECHO programs in the Veterans Health Administration, focusing on uptake by primary care clinics and veterans. METHODS: Administrative data were used to assess program uptake, including adoption (ie, proportion of primary care clinics participating) and reach (ie, proportion of eligible veterans participating)...
August 24, 2016: Journal of Rural Health
Valentina Moro, Simone Pernigo, Manos Tsakiris, Renato Avesani, Nicola M J Edelstyn, Paul M Jenkinson, Aikaterini Fotopoulou
Anosognosia for hemiplegia (AHP) is informative about the neurocognitive basis of motor awareness. However, it is frequently associated with concomitant symptoms, such as hemispatial neglect and disturbances in the sense of body ownership (DSO). Although double dissociations between these symptoms have been reported, there is ongoing debate about whether they are manifestations of independent abnormalities, or a single neurocognitive deficit. We aimed to investigate the specificity of lesions associated with AHP by surpassing four, existing methodological limitations: (a) recruit a relatively large sample of patients (total N = 70) in a multi-centre study; (b) identify lesions associated with AHP in grey and white matter using voxel-based methods; (c) take into account the duration of AHP and concomitant neglect symptoms; and (d) compare lesions against a control hemiplegic group, patients suffering from AHP and DSO, and a few, rare patients with selective DSO...
October 2016: Cortex; a Journal Devoted to the Study of the Nervous System and Behavior
Antonella Maselli, Konstantina Kilteni, Joan López-Moliner, Mel Slater
Experimental work on body ownership illusions showed how simple multisensory manipulation can generate the illusory experience of an artificial limb as being part of the own-body. This work highlighted how own-body perception relies on a plastic brain representation emerging from multisensory integration. The flexibility of this representation is reflected in the short-term modulations of physiological states and perceptual processing observed during these illusions. Here, we explore the impact of ownership illusions on the temporal dimension of multisensory integration...
2016: Scientific Reports
Paolo Bartolomeo, Stefania de Vito, Tal Seidel Malkinson
Confabulations usually refer to memory distortions, characterized by the production of verbal statements or actions that are inconsistent with the patient's history and present situation. However, behavioral patterns reminiscent of memory confabulations can also occur in patients with right hemisphere damage, in relation to their personal, peripersonal or extrapersonal space. Thus, such patients may be unaware of their left hemiplegia and confabulate about it (anosognosia), deny the ownership of their left limbs (somatoparaphrenia), insult and hit them (misoplegia), or experience a "third", supernumerary left limb...
July 15, 2016: Cortex; a Journal Devoted to the Study of the Nervous System and Behavior
Tomohisa Asai, Noriaki Kanayama, Shu Imaizumi, Shinichi Koyama, Seiji Kaganoi
The scientific exploration of the self has progressed, with much attention focused on the Embodied Sense of Self (ESS). Empirical studies have suggested the mechanisms for self-representation. On the other hand, less attention has been paid to the subjectivity itself of the self. With reference to previous studies, the current study collected items that reflect the ESS and statistically extracted three factors for it: Ownership, Agency, and Narrative. The developed questionnaire [Embodied Sense of Self Scale (ESSS)] showed good enough validity and reliability for practical use...
2016: Frontiers in Psychology
Mohamad Arif Fahmi Ismail, Sotaro Shimada
The rubber hand illusion (RHI) is an illusion of the self-ownership of a rubber hand that is touched synchronously with one's own hand. While the RHI relates to visual and tactile integration, we can also consider a similar illusion with visual and motor integration on a fake hand. We call this a "robot hand illusion" (RoHI), which relates to both the senses of ownership and agency. Here we investigate the effect of delayed visual feedback on the RoHI. Participants viewed a virtual computer graphic hand controlled by their hand movement recorded using a data glove device...
2016: PloS One
Ashleigh W Newman, Erica Behling-Kelly
With advancements in the standard of care in veterinary medicine and instrument technology, performing in-house laboratory work on a variety of point-of-care instruments, ranging from glucometers to benchtop chemistry analyzers, has become increasingly commonplace. However, the ability of an instrument to perform a test does not guarantee that those results are accurate. Ensuring that your in-clinic laboratory is providing reliable data requires a comprehensive plan that encompasses both common sense practices aimed at preventing errors at each stage of the testing process, as well as standard operating procedures to validate and monitor analyzer performance...
March 2016: Topics in Companion Animal Medicine
Wen Wen, Katsutoshi Muramatsu, Shunsuke Hamasaki, Qi An, Hiroshi Yamakawa, Yusuke Tamura, Atsushi Yamashita, Hajime Asama
Body representation refers to perception, memory, and cognition related to the body and is updated continuously by sensory input. The present study examined the influence of goals on body representation updating with two experiments of the rubber hand paradigm. In the experiments, participants moved their hidden left hands forward and backward either in response to instruction to touch a virtual object or without any specific goal, while a virtual left hand was presented 250 mm above the real hand and moved in synchrony with the real hand...
2016: Frontiers in Human Neuroscience
Fatema Khatun, Anita E Heywood, Pradeep K Ray, Abbas Bhuiya, Siaw-Teng Liaw
INTRODUCTION: There are increasing numbers of mHealth initiatives in middle and low income countries aimed at improving health outcomes. Bangladesh is no exception with more than 20 mobile health (mHealth) initiatives in place. A recent study in Bangladesh examined community readiness for mHealth using a framework based on quantitative data. Given the importance of a framework and the complementary role of qualitative exploration, this paper presents data from a qualitative study which complements findings from the quantitative study...
September 2016: International Journal of Medical Informatics
Robin Bekrater-Bodmann, Boo Young Chung, Jens Foell, Dorothee Maria Gescher, Martin Bohus, Herta Flor
INTRODUCTION: Patients with borderline personality disorder (BPD) often report an unstable sense of self, which is further enhanced in dissociative states. As one consequence, BPD patients show a labile body percept, which might result in a higher degree of body plasticity. However, experimental data on body plasticity in BPD are not yet available. MATERIALS AND METHODS: The rubber hand illusion (RHI) probes the plasticity of one's body by inducing the feeling of ownership for an artificial limb...
August 2016: Comprehensive Psychiatry
Naoki Arizono, Yuji Ohmura, Shiro Yano, Toshiyuki Kondo
The self-identification, which is called sense of ownership, has been researched through methodology of rubber hand illusion (RHI) because of its simple setup. Although studies with neuroimaging technique, such as fMRI, revealed that several brain areas are associated with the sense of ownership, near-infrared spectroscopy (NIRS) has not yet been utilized. Here we introduced an automated setup to induce RHI, measured the brain activity during the RHI with NIRS, and analyzed the functional connectivity so as to understand dynamical brain relationship regarding the sense of ownership...
2016: Neural Plasticity
Christophe E de Bézenac, Vanessa Sluming, André Gouws, Rhiannon Corcoran
In normal circumstances we can easily distinguish between changes to the external world brought about by our own actions from those with external causes. However, in certain contexts our sense of ownership and agency over acts is not so clear. Neuroimaging studies have implicated a number of regions in the sense of agency, some of which have been shown to vary continuously with action-outcome discordance. However, little is known about dynamic, ambiguous contexts characterised by a lack of information for self-other differentiation, yet such ambiguous states are important in relation to symptoms and levels of consciousness that characterise certain mental health conditions...
September 2016: Biological Psychology
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