Primate Brain Anatomy: New Volumetric MRI Measurements for Neuroanatomical Studies

Area of Science:

• Neuroscience
• Comparative Anatomy
• Primatology

Background:

• The last major comparative primate brain volumetric dataset was published in the early 1980s.
• Technological advancements, including magnetic resonance imaging (MRI), and specialized brain banks create opportunities for new research.
• A gap exists in comprehensive, modern volumetric data for diverse primate species.

Purpose of the Study:

• To present a novel, comprehensive dataset of primate brain region volumes.
• To include a significant number of species previously unrepresented in volumetric studies.
• To provide researchers with valuable data for comparative evolutionary analyses.

Main Methods:

• Utilized high-resolution 9.4-T magnetic resonance imaging (MRI) scans.
• Collected volumetric data from 46 brains across 38 species, with partial measurements from 5 additional species.
• Included 39 species in total, with 20 species not previously documented in literature.

Main Results:

• Generated volumetric measurements for 16 distinct brain areas across 39 primate species.
• Acquired data from the Netherlands Institute of Neuroscience Primate Brain Bank and donated MRI scans.
• Established a dataset encompassing a wider range of species than previously available.

Conclusions:

• The new dataset significantly expands the available resources for primate brain evolution research.
• The publicly available dataset and MRI scans will facilitate comparative neuroanatomical studies.
• This work addresses the need for updated, high-resolution volumetric data in primate comparative anatomy.