IIT Madras unveils detailed 3D atlas of human brainstem

Researchers in India have unveiled the world's most detailed three-dimensional atlas of the human brainstem, a breakthrough that provides an unprecedented cellular-level view of one of the brain's most critical and complex regions. The atlas, named ANCHOR (Atlas of Neurochemical Characterisation of the Human Brainstem with 3D Reconstruction), was developed by the Sudha Gopalakrishnan Brain Centre at the Indian Institute of Technology Madras and publicly released this week.

The atlas was officially launched during the third BRICS Neuroscience Symposium, which was held from June 5 to 7 at the IIT Madras campus. It integrates magnetic resonance imaging, histology, and detailed neurochemical mapping to create comprehensive, multimodal maps spanning prenatal, childhood, and adult stages. The project reconstructed more than 200 brainstem nuclei and fiber tracts from hundreds of serial tissue sections. To distinguish cell types, researchers applied eight complementary immunostains across over 500 sections.

Principal Scientific Adviser to the Government of India, Ajay Kumar Sood, who attended the launch, described the atlas as a significant accomplishment in neurobiology. He stated that...