In this exploratory paper, we advocate for a way to mitigate the anthropocentrism inherent in interaction-design methodologies. We propose to involve animals that live in anthropic environments as participants in design processes. The current relationships between animals and technology have an inevitable impact on their well-being and raise fundamental ethical questions concerning our design policies. Drawing from the work of Bruno Latour and Donna Haraway, we argue for a situated approach in which we reflect upon concrete design contexts. We explore the notion of becoming with as a conceptual framework for the intuitive and bodily understanding that takes place between humans and animals when they encounter one-another in shared contexts. Adopting a research through design approach, we further explore this notion by reflecting upon two different participatory design projects with two dogs. We found these reflections to offer valuable perspectives for designers to analyse and discuss their iterative processes.

Background Individuals with acquired brain injuries (ABI) are in need of neurorehabilitation and neurorepair. Virtual anatomical interactivity (VAI) presents a digital game-like format in which ABI survivors with upper limb paresis use an unaffected limb to control a standard input device and a commonplace computer mouse to control virtual limb movements and tasks in a virtual world. Methods In a prospective cohort study, 35 ambulatory survivors of ABI (25/71% stroke, 10/29% traumatic brain injury) were enrolled. The subjects were divided into three groups: group A received VAI therapy only, group B received VAI and physical/occupational therapy (P/OT), and group C received P/OT only. Motor skills were evaluated by muscle strength (hand key pinch strength, grasp, and three-jaw chuck pinch) and active range of motion (AROM) of the shoulder, elbow, and wrist. Changes were analyzed by ANOVA, ANCOVA, and one-tailed Pearson correlation analysis. MRI data was acquired for group A, and volumetric changes in grey matter were analyzed using voxel-based morphometry (VBM) and correlated with quantified motor skills. Results AROM of the shoulder, elbow, and wrist improved in all three groups. VBM revealed grey matter increases in five brain areas: the tail of the hippocampus, the left caudate, the rostral cingulate zone, the depth of the central sulcus, and the visual cortex. A positive correlation between the grey matter volumes in three cortical regions (motor and premotor and supplementary motor areas) and motor test results (power and AROM) was detected. Conclusions Our findings suggest that the VAI rehabilitation program significantly improved motor function and skills in the affected upper extremities of subjects with acquired brain injuries. Significant increases in grey matter volume in the motor and premotor regions of affected hemisphere and correlations of motor skills and volume in nonaffected brain regions were present, suggesting marked changes in structural brain plasticity. Trial registration The trial “Limitations of motor brain activity – use of virtual reality for simulation of therapeutic interventions” has been registered under reference number ISRCTN11757651.

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This paper draws on the notion of the ‘project,’ as developed in the existential philosophy of Heidegger and Sartre, to articulate an understanding of the existential structure of engagement with virtual worlds. By this philosophical understanding, the individual’s orientation towards a project structures a mechanism of self-determination, meaning that the project is understood essentially as the project to make oneself into a certain kind of being. Drawing on existing research from an existential-philosophical perspective on subjectivity in digital game environments, the notion of a ‘virtual subjectivity’ is proposed to refer to the subjective sense of being-in-the-virtual-world. The paper proposes an understanding of virtual subjectivity as standing in a nested relation to the individual’s subjectivity in the actual world, and argues that it is this relation that allows virtual world experience to gain significance in the light of the individual’s projectual existence. The arguments advanced in this paper pave the way for a comprehensive understanding of the transformative, self-transformative, and therapeutic possibilities and advantages afforded by virtual worlds.

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