What this means
This paper is a review and a plan, not a set of new results. It argues that studies in rodents could help explain why brain mechanics relate to brain function.
Plain-English summary written by an AI model from the abstract. The original is below.
- Who it was tested in
- A review of human studies and earlier rodent work; no new participants
- Kind of research
- A study
The science
- Original title
- Brain mechanics and cognition: the role of rodent MR elastography in identifying cellular mechanisms.
- Authors
- Milbocker KA, Vander Wiele SS, Johnson CL
- Journal
- Frontiers in cognition
- Published
- Oct 15, 2026
- Study type
- Study
- PMID
- 42876515 ↗
Abstract
Magnetic resonance elastography (MRE) non-invasively quantifies brain tissue mechanical properties and has revealed an intriguing relationship between regional viscoelasticity and cognitive function across the lifespan. However, the biological basis of this relationship remains poorly understood as it is not yet clear which microstructural features generate the mechanical signal, whether brain mechanics are primarily structural or also dynamic on cognitive timescales, or how generalizable the current relationships observed in humans are across different brain regions and functions. We argue that resolving these questions requires preclinical MRE in rodents, where mechanical measurements can be linked directly to complementary analyses of cellular components and where structure and function can be experimentally perturbed. Although rodent MRE is well-established and has been productively applied to disease models, it has been little used in the contexts in which the human MRE-cognition findings are most concentrated including normal development and aging and cognitive variation in the otherwise-healthy brain. We review the human MRE-cognition literature, summarize what preclinical MRE has revealed to date, and outline experimental frameworks organized around the open questions through which rodent MRE could begin to clarify why brain mechanics relate to brain function.
Milbocker KA, Vander Wiele SS, Johnson CL Brain mechanics and cognition: the role of rodent MR elastography in identifying cellular mechanisms. Frontiers in cognition. 2026. doi:10.3389/fcogn.2026.1943713. PMID: 42876515. https://pubmed.ncbi.nlm.nih.gov/42876515/