Gyrus Group

  The Expert Witness Report in Brief Gyrus Group experts receive instructions from insurance or legal firms to provide their expert opinion on how an incident may (or may not) have resulted in a brain injury or illness, and what the consequences of the injury or illness may be for the individual following the incident (if any). In forming their opinion, experts will review relevant documents (such as medical records and employment documents), may perform a clinical examination of the claimant, and will reflect on their own extensive experience in medical practice and on their understanding of the medical literature. Gyrus Group expert reports comply with Part 35 directions, meaning experts understand and confirm that their duty is to the court, and not to their instructor. Gyrus Group maintain a 50:50 balance between instructions received from claimants and defendants. The Expert Witness Gyrus Group’s expert witnesses are practicing medical consultants, specialising in the ...

  Following damage to the central nervous system (CNS), immune cells in the brain, known as microglia, are activated. Microglia are critical for protecting neural function and they have an important role in clearing debris and modulating the inflammatory response. However, following CNS injury , microglia can become dysregulated and play a key role in neurodegeneration. Chahin et al., (2025) recently published in Communications Biology, present an animal model of single and repetitive concussions, which was able to reliably induce cognitive and learning impairments in the absence of deficits in motor function, a key confound in the assessment of cognition. The model did not induce macroscopic brain injury and did not induce hemorrhage, edema, contusion, bruising, skull fracture or cell death. As a result, the model was able to mimic human concussions, where cognitive impairments are typically seen in the absence of abnormalities on neuroimaging scans. Following repetitive con...