Neuro Simplified • Easy to Digest Neuro Rehab

Why Your Brain Forgets Which Hand is Left and Right After a Stroke

In this episode, we dive into groundbreaking research exploring how stroke impacts the brain’s internal representation of the body, known as the body schema. While traditional rehabilitation for upper limb impairment often produces only modest gains, new evidence suggests that the fundamental way a person perceives their limbs is altered following a stroke. We examine an observational study involving 895 participants that utilized left/right judgment tasks to measure the accuracy and speed of limb recognition. The findings reveal that individuals with stroke are significantly slower and less accurate in identifying the laterality of hand and shoulder images compared to those without stroke. Importantly, these deficits exist regardless of whether the individual experiences chronic pain or which side of the brain was affected. Join us as we discuss how these insights into "scrambled" body maps are shaping the future of motor imagery training and providing a foundation for more effective, tailored neurorehabilitation strategies. Source: Haslam BS, Butler DS, Cocks TS, Kim AS, Carey LM. Body schema as assessed by upper limb left/right judgment tasks is altered in stroke: implications for motor imagery training. J Neurol Phys Ther. 2023;47(1):26-34. doi:10.1097/NPT.0000000000000412. Powered by: Google Notebook LM

Can Dry Needling Support Stroke Recovery?

Dry needling is making its way into stroke rehabilitation, but how safe is it, does it actually ease post-stroke spasticity, and what do the field's leading clinicians actually agree on? In this episode, we break down three studies that together form the most complete picture yet of dry needling's role in stroke recovery. We look at what a 2024 scoping review tells us about safety and adverse events in stroke patients, how an ongoing randomized trial is testing dry needling paired with exercise therapy for spasticity and motor function, and what a 2025 modified Delphi consensus reveals about expert practice recommendations. If you work in neurorehabilitation or just want to understand where the evidence stands, this one's for you. Sources: 1. Malfait I, Gijsbers S, Smeets A, et al. Safety of dry needling in stroke patients: a scoping review. Eur J Phys Rehabil Med. 2024;60(2):225-232. doi:10.23736/S1973-9087.24.08224-8 2. Babazadeh-Zavieh SS, Ansari NN, Ghotbi N, et al. Effects of dry needling and exercise therapy on post-stroke spasticity and motor function– protocol of randomized clinical trial. Contemp Clin Trials Commun. 2022;28:100921. doi:10.1016/j.conctc.2022.100921 3. Velázquez-Saornil J, Abuín-Porras V, Frutos-Llanes R, Barragán-Casas JM, Campón-Chekroun A, Sánchez-Milá Z. Expert consensus on the application of dry needling in stroke patients: A modified delphi method. Clin Rehabil. 2025;39(7):955-966. Powered by: Google Notebook LM

Can Physical Exercise Improve Cognition After Stroke?

In this episode of Neuro Simplified, we break down a 2025 systematic review and network meta-analysis on physical activity interventions for post-stroke cognitive recovery. The study analyzed 26 randomized controlled trials with 1,408 stroke survivors and compared different exercise approaches for improving cognition after stroke. The biggest takeaway: multi-modal exercise ranked highest for cognitive recovery, followed by aerobic exercise. Multi-modal programs included combinations of strength training, balance work, aerobic training, and sometimes cognitive or task-based components. For clinicians, this reinforces something important: post-stroke cognition is not only trained at the table with worksheets or apps. It can also be influenced through structured movement, intensity, repetition, cardiovascular challenge, and whole-body rehabilitation. In this episode, we discuss why combined exercise may have a stronger effect than single-mode training, how aerobic exercise may support brain health, and why long-term adherence remains one of the biggest challenges in stroke rehab. Source: Wang H, Li D, Li S, Zhang X, Zang W, Zhu Y, Zhang S, Xu F, Xiao Z, Guo K. Physical activity interventions for post-stroke cognitive recovery: a systematic review and network meta-analysis of comparative effects. Front Neurol. 2025;16:1646328. doi:10.3389/fneur.2025.1646328. Powered by: Google Notebook LM

Treating Knee Locking After A Stroke

After a stroke, one of the most common and debilitating walking problems is knee hyperextension — where the knee snaps backward during the stance phase of gait, slowing patients down, wasting energy, and risking long-term joint damage. But what actually works to treat it? In this episode, we break down a landmark systematic review that examined the best available evidence across three treatment categories: proprioceptive training, orthotic devices, and functional electrical stimulation. Spoiler: not all treatments are created equal. We explore why teaching the brain to "feel" the knee again may be the most promising first-line approach, why your choice of brace matters more than you'd think, and why electrical stimulation still has a lot to prove. Whether you're a physio, rehab specialist, neurologist, or a stroke survivor curious about your options, this episode gives you a clear-eyed look at where the science stands — and where the gaps still are. Source: Geerars M, Minnaar-van der Feen N, Huisstede BMA. Treatment of knee hyperextension in post-stroke gait: a systematic review. Gait Posture. 2022;91:137-148. doi:10.1016/j.gaitpost.2021.08.016 Powered by Notebook LM

Young Athletes, Brain Inflammation, and the Path to CTE

For years, chronic traumatic encephalopathy (CTE) was thought of as a disease that appeared decades after an athlete's playing career ended. New research is challenging that belief. In this episode, we connect three landmark studies that examined young athletes exposed to repetitive head impacts. Researchers found evidence of CTE in athletes under 30, identified brain inflammation and neuron loss that may occur before CTE develops, and reviewed the growing evidence linking repetitive head impacts to long-term neurodegeneration. We break down what these findings mean, what remains unknown, and why the conversation around concussion and contact sports is rapidly evolving. Whether you're a clinician, athlete, coach, or family member, this episode explores the latest science behind one of the most debated topics in brain health. Sources: * McKee AC, Mez J, Abdolmohammadi B, et al. Neuropathologic and clinical findings in young contact sport athletes exposed to repetitive head impacts. JAMA Neurol. 2023;80(10):1037-1050. doi:10.1001/jamaneurol.2023.2907 * Butler MLMD, Pervaiz N, Breen K, et al. Repeated head trauma causes neuron loss and inflammation in young athletes. Nature. 2025;647(8045):228-262. doi:10.1038/s41586-025-09534-6 * McKee AC, Stein TD, Huber BR, et al. Chronic traumatic encephalopathy (CTE): criteria for neuropathological diagnosis and relationship to repetitive head impacts. Acta Neuropathol. 2023;145(4):371-394. doi:10.1007/s00401-023-02540-w Powered by: Google Notebook LM