What Occupational Therapists Actually Do for Neuro-Behavioural Changes After Acquired Brain Injury

A 2023 study published in the Australian Occupational Therapy Journal by Brown, Tse, and Fortune found that almost half of people living with acquired brain injury experience significant behavioural changes. Yet despite how frequently this happens, the occupational therapist’s specific role in addressing these changes has remained poorly defined — both in the clinical literature and across major rehabilitation frameworks internationally.

The Brown et al. study set out to change that. Using a national qualitative design with semi-structured interviews across experienced occupational therapists, researchers identified four clear themes describing how OTs actually work in neuro-behavioural rehabilitation. What emerged was a picture of a profession operating at the intersection of environment, relationship, sensory processing, and cognition — with daily occupation as the through-line.

Theme 1: Adapting Tasks and the Environment

The most foundational tool in ABI rehabilitation is often the most overlooked: changing what the person is asked to do, and where they are asked to do it.

Occupational therapists working with ABI clients adapt task complexity to match current cognitive-behavioural capacity. An impulsive client may be set up with single-step instructions before multi-stage activities are introduced. A client with poor inhibition may work in a low-stimulus environment before graduating to contexts with natural social and sensory distractions.

This is not about lowering expectations. It is about engineering early success experiences that are then gradually made more demanding. The environment, both physical and sensory, becomes a therapeutic instrument — which is precisely why home-based rehabilitation carries a distinct clinical advantage. The home is not a simulation. It is the real setting where behaviour needs to change, which means the therapist can assess and intervene in authentic context, not a clinical approximation of it.

Theme 2: Building Therapeutic Rapport

The study’s finding on therapeutic relationship was striking enough to stand as its own theme. Occupational therapists consistently identified rapport not as background noise to treatment, but as a treatment modality in itself.

For clients with ABI, trust is slow to build and quick to fracture. Behavioural dysregulation can manifest as aggression, refusal, or emotional volatility. Therapists who rushed past the relationship piece found their interventions consistently resisted. Those who invested in genuine connection — acknowledging frustration, following the client’s pace, maintaining predictability — found behavioural improvements that could not be explained by technique alone.

Neurologically, this makes sense. The prefrontal cortex, heavily implicated in self-regulation, is also central to the encoding of social safety. A regulated therapeutic relationship can serve as an external scaffolding for emotional regulation whilst the brain works through whatever neuroplastic recovery is possible.

Theme 3: Sensory-Based Approaches

The third theme identified was the deliberate use of sensory input as a regulatory strategy. Occupational therapists with training in sensory integration used specific sensory experiences — proprioceptive, tactile, vestibular — to influence arousal levels and behavioural state.

For some clients, over-stimulation drives agitation and impulsive behaviour. Calming sensory input — weighted objects, slow rhythmic movement, reduced visual noise — can help bring the nervous system to a more regulated state before purposeful activities are attempted.

For others, particularly those with flat affect or reduced engagement, alerting sensory experiences increase arousal and attentiveness. This bidirectional use of sensory input — calming or alerting as clinically indicated — requires precise observation and responsive adjustment. It is rarely achieved through a fixed protocol.

This sensory-regulatory work connects directly to upper limb rehabilitation in ABI. Sensation and movement are inextricable; training touch discrimination and proprioceptive feedback in the hand not only restores motor function but provides a sustained source of organised sensory input to the cortex. Sensory re-education exercises practised consistently in the home setting extend the reach of in-session sensory work into the client’s daily rhythm.

Theme 4: Shaping Thinking Patterns

The fourth theme encompassed cognitive and metacognitive strategies — interventions designed to help clients recognise and modify their own thinking and behavioural patterns.

This includes psychoeducation about ABI sequelae (why impulsivity, emotional lability, and poor self-monitoring occur), cognitive-behavioural strategies adapted for neurological populations, and the use of external cueing and structured routines to compensate for compromised internal regulation.

A consistent finding from the study was that therapists who integrated these approaches within functional, occupation-based activities — rather than treating them as separate “cognitive sessions” — achieved better carry-over into daily life. The goal is not insight for its own sake. It is insight that changes behaviour at the kitchen table, in the community, and with family members.

Expanding the Toolkit: tDCS and Neuromodulation

Beyond the four practice themes, there is a growing evidence base for adjunctive tools that can support the neurological conditions underpinning neuro-behavioural rehabilitation.

Transcranial direct current stimulation (tDCS) is one of them. By delivering a low-level electrical current to targeted cortical areas, tDCS modulates neuronal excitability — making stimulated regions either more or less likely to fire, depending on electrode polarity and placement. For ABI populations, anodal stimulation over the dorsolateral prefrontal cortex has been investigated for its potential to improve executive function, working memory, and behavioural inhibition.

A 2023 evidence map published in Frontiers in Neuroergonomics reviewed the accumulating body of tDCS research in traumatic brain injury and found it to be safe and showing signal across multiple cognitive domains. That said, the evidence base remains heterogeneous — protocols vary, and the field has not yet converged on optimal parameters for ABI-specific behavioural targets. At its current state, tDCS functions best as a complement to intensive, structured therapy rather than a standalone treatment. In practice, sessions are most meaningfully deployed when paired with active rehabilitation tasks, so that heightened cortical excitability coincides with the learning and adaptation the therapy is trying to drive.

Robotics and Upper Limb Rehabilitation

ABI frequently involves upper limb impairment — weakness, spasticity, reduced coordination — which compounds behavioural rehabilitation by limiting the range of occupation-based activities available to the therapist. When a client cannot use their hands meaningfully, the intervention palette narrows.

Home-use robotics protocols address this directly. Devices such as the EsoGlove Pro, which provides soft-robotic assistance to finger extension and flexion, and the H-Man, an end-effector robotic platform for shoulder and elbow reach training, enable high-repetition, task-oriented upper limb practice in the home setting. The volume of practice that robotics makes possible — particularly for clients who fatigue quickly in supervised sessions — is a meaningful advantage at the stage of rehabilitation where neuroplastic change is most likely.

For the occupational therapist working in neuro-behavioural rehabilitation, this matters because activity engagement is itself a regulatory strategy. A client successfully completing a reaching or grasping task is not just building motor function. They are sustaining attention, tolerating effort, and practising the kind of goal-directed persistence that ABI commonly disrupts.

Orthotic and Splint Prescription

Spasticity management is a practical and frequently underestimated component of ABI rehabilitation. Unmanaged spasticity in the hand and wrist limits meaningful activity, causes discomfort, and reinforces avoidance — all of which compound behavioural difficulties.

Custom orthotic fabrication and evidence-based splint prescription form part of a comprehensive upper limb approach to ABI. This includes both static splints to maintain joint position and reduce contracture risk, and dynamic or functional splints that support participation in daily tasks. Prescription is not a one-time event. It requires fitting, training, review, and adjustment as the client’s neurological status and functional demands evolve.

Social Prescription: The Real World as a Therapeutic Space

If there is one aspect of ABI rehabilitation that remains persistently underutilised, it is the deliberate and structured use of social participation as a therapeutic tool.

In the earlier stages of rehabilitation, social prescription involves carefully re-introducing the client to real-world environments — familiar community spaces, family meals, outings with structured parameters — rather than waiting for “full readiness” before reintegration. This approach leverages the ecological validity of the home and community: the regulation demands are real, the interpersonal complexity is real, and the successes are therefore more meaningful.

In later stages, once foundational skills are more consolidated, social activities serve a different function — they become the vehicle for fine-tuning residual difficulties in social cognition, emotional regulation, and flexible thinking. The community occupational therapy model, well-documented in dementia research and reviewed in this earlier piece on home-based OT intervention, demonstrates how much of the clinically significant work happens outside the therapy session, in the ordinary spaces of life.

Why the Home Setting Matters

The cumulative picture across all four of Brown et al.’s themes points in one direction: effective neuro-behavioural rehabilitation is deeply context-dependent. It requires the therapist to work where the behaviour actually occurs, observe what actually triggers dysregulation, and intervene with the real tasks and relationships the client has to navigate.

That is a structural argument for home-based rehabilitation in ABI — not as a convenience, but as a clinical position.

Frequently Asked Questions

What is acquired brain injury and how does it differ from traumatic brain injury? Acquired brain injury (ABI) is an umbrella term for any brain damage that occurs after birth and is not related to a congenital or degenerative condition. Traumatic brain injury (TBI) is one type — caused by an external force such as a fall or accident — but ABI also includes non-traumatic causes such as stroke, hypoxic injury, infection, or tumour. The behavioural and cognitive sequelae can be similar across both types.

What kinds of behavioural changes occur after acquired brain injury? Common neuro-behavioural changes after ABI include impulsivity, poor emotional regulation, reduced frustration tolerance, social withdrawal, lack of insight into one’s own difficulties, aggression, apathy, and changes in social cognition. These arise from damage to the frontal and prefrontal systems that govern self-regulation.

What is the occupational therapist’s role in managing behavioural changes after ABI? OTs address neuro-behavioural changes through environmental and task modification, therapeutic relationship building, sensory-regulatory strategies, and metacognitive training — always grounded in meaningful daily activity. Their focus is on improving real-world function, not behavioural change in isolation.

Can tDCS help with behavioural difficulties after brain injury? Transcranial direct current stimulation (tDCS) shows emerging evidence for supporting executive function and cognitive regulation after ABI, particularly when combined with active therapy tasks. It is not a standalone treatment but can amplify the effects of intensive rehabilitation when applied correctly.

How does home-based rehabilitation change the approach to ABI neuro-behavioural rehab? Home-based therapy allows the OT to work within the actual environment where behavioural difficulties occur — observing authentic triggers, modifying real tasks, and building regulation skills in the settings where they are needed. This ecological validity is difficult to replicate in a clinical facility.

What role does social prescription play in ABI recovery? Social prescription involves the deliberate, structured use of community and social participation as part of the rehabilitation programme. In early rehabilitation, it supports graded reintegration into real-world environments. Later in recovery, it becomes a vehicle for refining social cognition and emotional flexibility.