Active Brain & Nervous System Psychology & Behaviour

Adaptive and maladaptive brain plasticity

In plain English

AI plain-English summary

Amputees often feel vivid sensations of a missing hand decades after losing it, and researchers want to know why—and how to turn that brain plasticity from a source of pain into a tool for recovery. This matters because hand function is essential for daily life, yet the brain’s ability to rewire itself after injury or amputation can be both helpful and harmful. The team studies how the brain reorganises the cortical territories that once controlled a hand, and how that process affects learning to use a prosthetic limb or augmentative devices like the Third Thumb—a wearable extra digit. They also aim to understand phantom limb pain, a common and poorly treated consequence of amputation. If successful, this work could improve rehabilitation strategies for amputees and people with hand dysfunction, helping them adapt more quickly to prosthetics or assistive technologies. It may also lead to new ways to prevent or reduce phantom limb pain. While much of the research is fundamental—exploring how the brain adapts to changed experience—it builds on decades of plasticity research that has already informed stroke recovery and motor learning. Deeper understanding here could eventually reshape how clinicians design training programmes for patients relying on motor augmentation.

View original technical description
Our brain's ability to adapt how it processes inputs based on changed experience (brain plasticity) is considered a key mechanism for supporting how we learn new skills and recover from injury. Hand function is essential for most aspects of daily life, and as such provides a rich model for studying brain function and plasticity. We aim to understanding how the brain best supports hand function and how it can best cope with hand dysfunction. We are particularly interested in studying how we could use technology to increase hand functionality in able and disabled individuals at all ages. For example, we want to know what happens to the cortical territories of the hand following arm amputation, and understand how the brain best supports the acquisition of new skills necessary for amputees to adapt to their disability, including prosthetic limb usage and augmentative technology such as the Third Thumb (Dani Clode Design). We are also interested in further understanding why amputees experience vivid sensations of their missing hand many decades after amputation, and how we could help alleviate phantom limb pain. To understand these processes better, we combine experimental models, performed on healthy participants, and related clinical populations. We hope that our research will enable clinical populations and those relying on motor augmentation to take advantage of the benefits of brain plasticity, rather than to suffer from their adverse effects.

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Researchers

Tamar Makin (Principal Investigator)

Related Research

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Brain reorganisation in amputees
Two Types of Grasp: Dissecting Cortical and Sub-cortical Contributions to Primate Hand Function
Can cortical reorganisation support adaptive behaviour?
Optimal feedback control of a neuromotor interface
Neural plasticity of the motor system: Functional specialization vs. integration

Original classification

Intramural

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