A study by Australia's Florey Institute of Neuroscience and Mental Health has revealed that brain surgery causes structural changes far beyond the operation site, affecting distant brain regions.
Research published in Brain tracked epilepsy patients before and after neurosurgery using advanced MRI and image analysis techniques.
Mechanism of Change
According to lead author Philip Pruckner, a Florey PhD student, the disruption of brain connections during surgery can lead to the degeneration of cells at the endpoints of those connections. This process may then cascade to other connected parts of the brain, propagating changes throughout the brain network.
Research Implications and Tools
The researchers suggest that tailoring neurosurgical interventions to individual patients could help preserve unnecessary tissue and reduce network disruptions. As part of the study, the team developed enhanced analytical tools designed to detect subtle changes in brain connectivity over time. These tools are now openly available to the research community via the MRtrix3 software platform.