Researchers Release Sex-Balanced Longitudinal Brain Imaging Dataset in Developing Rats
Scientists have published an open-access dataset containing brain imaging scans from 36 Wistar rats (18 female, 18 male) tracked across five sessions from juvenile stage through early adulthood. The dataset includes structural and functional MRI scans, body weight measurements, puberty onset timing, and reproductive cycle tracking. This resource addresses a significant gap in preclinical research by enabling studies of how rat brains develop differently across sexes during the critical puberty period.
Researchers have released a comprehensive longitudinal developmental dataset featuring 36 Wistar rats scanned at five timepoints spanning postnatal days 28 through 91, covering the transition from pre-puberty through early adulthood. The dataset includes both structural MRI and resting-state functional MRI (fMRI) scans collected using standardized protocols, along with daily body weight measurements, puberty onset documentation, and estrous cycle tracking via cytological smears. The balanced sex composition (18 females and 18 males) and inclusion of reproductive markers make this dataset particularly valuable for investigating how brain development differs between sexes during puberty. By making this data openly available, the researchers aim to support investigations into longitudinal brain functional developmental trajectories and promote consideration of Sex As a Biological Variable (SABV) in preclinical neuroscience research.
What's missing
The article does not specify the intended applications or which specific research questions this dataset is designed to address, nor does it discuss how this dataset compares to or builds upon existing developmental neuroimaging resources in preclinical research.
How coverage differed
The single source is a preprint from bioRxiv, which presents the dataset objectively as a research contribution. No competing narratives or alternative framings are present, as this is a straightforward scientific resource announcement rather than a contested topic.
What different sources said
- bioRxivCenter
A sex-balanced longitudinal developmental task-free fMRI rat dataset.
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