Organizational Unit:
School of Biological Sciences

Research Organization Registry ID
Description
Previous Names
Parent Organization
Parent Organization
Organizational Unit
Includes Organization(s)

Publication Search Results

Now showing 1 - 3 of 3
  • Item
    Kinematic improvement differs between transradial versus partial hand prosthesis use following interlimb transfer
    (Georgia Institute of Technology, 2024-06) Alterman, Bennett ; Ali, Saif ; Keeton, Emily ; Hendrix, William ; Lee, Jade ; Binkley, Kartina ; Johnson, John ; Wang, Shuo ; Kling, James ; Wheaton, Lewis A.
    Developing empirical approaches to functional rehabilitation during the acute and sub-acute stages following amputation remains an area of need. For persons with unilateral limb loss, interlimb training (ILT) is a potentially attractive approach, as it may allow for prosthesis use learning on the unaffected side while awaiting fitting with the prosthesis on the affected side. Understanding the possible benefits of ILT for functional adaptation with prostheses will be beneficial to our understanding of its utility, particularly across levels of upper-extremity amputation. Persons with sound limbs performed simple and complex reach-to-grasp tasks while wearing either a transradial or partial-hand prosthesis simulator in a 5-day ILT paradigm. We hypothesized that participating in ILT would result in motor improvements, particularly for partial hand device use and during increased task complexity. ILT yielded modest effects for both groups, showing significant increases in reach peak velocity, while only partial-hand users showed decreases in reach duration. Overall, the most notable and consistent effects were seen in partial hand users. These results suggest interlimb training may provide tangible benefit as an indicator of future prosthesis adaptation during early-stage amputation rehabilitation, especially with partial hand loss.
  • Item
    Grasp Posture Variability Leads to Greater Ipsilateral Sensorimotor Beta Activation during Prosthesis Use Data
    (Georgia Institute of Technology, 2022) Alterman, Bennett L. ; Ali, Saif ; Keeton, Emily ; Binkley, Katrina ; Hendrix, William ; Lee, Perry J. ; Johnson, John T. ; Wang, Shuo ; Kling, James ; Gale, Mary Kate ; Wheaton, Lewis A.
  • Item
    Partial-Hand Prosthesis Users Show Improved Reach-to-Grasp Behaviour Compared to Transradial Prosthesis Users with Increased Task Complexity
    (Georgia Institute of Technology, 2021) Wheaton, Lewis A. ; Alterman, Bennett L. ; Keeton, Emily ; Ali, Saif ; Binkley, Katrina ; Hendrix, William ; Lee, Perry J. ; Wang, Shuo ; Johnson, John T.
    Purpose: Approaches to improve outcomes after upper-extremity amputation remain poorly understood. Different levels of amputation may affect prosthetic device acceptance, function, and use. Examining differences in behavioural and functional performance for different levels of prosthesis use may provide vital information about unique motor control challenges across levels of amputation. Materials and methods: Participants without amputation completed simple and complex goal-directed reach-to-grasp motor actions using either a transradial or partial-hand prosthesis simulator. We hypothesised that participants using a partial-hand device would show greater functional adaptation compared to participants using a transradial device, measured by (1) lower movement duration, (2) lower reach duration, (3) higher reach peak velocity, and (4) lower placement error. Second, we hypothesised that increased task complexity would lead to greater functional adaptation, particularly in partial-hand users. Results: In the complex task, partial-hand users demonstrated variable grasp approaches, an effect not seen in the simple task or in transradial users. Partial-hand users showed significantly higher reach peak velocities compared to transradial users, regardless of grasp strategy in the complex but not the simple task. All groups showed decreases in movement duration over time in the complex task, but only partial-hand users improved in the simple task. Conclusion: There is a gap in our understanding of how people adapt to amputations of different levels. This work clarifies how device and environmental constraints contribute to unique action outcomes, and influence motor learning, which is crucial for optimising rehabilitation.