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Comparisons of Interaction Techniques between Stroke Survivors and Healthy Subjects in a Haptic Collaborative Task by Michael BowlerTRANSCRIPT
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Collaborative Haptic Interactions
Michael Bowler – University of Hertfordshire
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‘Phantom’ Haptic Device
Collaborative Haptic Interactions - Michael Bowler 212/07/2012
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GoalsModes of collaboration
Understanding movement
Establish learning of the task
Influence design of future systems
Test networked haptics and model of collaboration for future work
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Sorting Blocks Box
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Virtual Environment
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Collaboration Protocol
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Experiment 1 - Haptic Collaboration
300+ participant over 3 days
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Experiment 2 – Home-Based Rehabilitation
4 stroke survivors
12-weeks of haptic assessment and exercise tasks
Participants have suffered some level of upper-limb impairment as a result of their stroke.
Participants >6 months post stroke, with no further strokes within the last 6 months.
Participants were not receiving any other therapy for hand and wrist function.
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Why home-based?Can be more effective at home
Can reduce costs
In the comfort of own home
Likely to exercise more frequently and with greater variability
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Shape PreferencesFour shapes: Box, Star-shaped block, Cylinder,
and a Sphere.
Two categories: curved sided, and flat sided.
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Shape PreferenceForce
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Shape PreferenceAccuracy
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Shape PreferenceWork
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Collaborative Forces
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Order Frequency – Left to Right
Star Cylinder Sphere Box0
2
4
6
8
10
12
14
1234
Star Cylinder Sphere Box0
10
20
30
40
50
60
70
80
90
1234
Stroke Group
Healthy Group
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Shape Preferences
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LimitationsThere was no continued/follow up which may
may have shown further increases in task performance and a demonstration of learned skill for the task for the healthy group.
Interaction pairs in the stroke group consisted of the participant and the investigator providing an interaction bias.
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ConclusionsDifferent shapes afford different
movements/interaction paradigms
Curved surfaced shapes can be used for fine motor skill practice
Flat sided shapes can be used for strength/stamina building exercises
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AcknowledgmentsThis work has been conducted as part of a PhD
which has been funded by the EU FP7 framework projects:LIREC EC (Living with Robots and Interactive
Companions) http://lirec.euSCRIPT (Supervised Care and Rehabilitation
Involving Personal Tele-Robotics) http://scriptproject.eu