ANCHOR: IIT Madras unveils detailed 3D Atlas of human brainstem

Why in News?

The Indian Institute of Technology Madras has unveiled ANCHOR (Atlas of Neurochemical Characterisation of the Human Brainstem with 3D Reconstruction), described as the world’s most detailed three-dimensional atlas of the human brainstem. 

What is ANCHOR?

ANCHOR is a highly detailed 3D digital atlas of the human brainstem developed by the Sudha Gopalakrishnan Brain Centre at IIT Madras.

• It provides comprehensive neurochemical and anatomical maps of the human brainstem at cellular resolution, enabling researchers to visualize and study brain structures with unprecedented detail.
• ANCHOR was officially released during the 3rd BRICS Neuroscience Symposium, held from 5–7 June 2026 at the IIT Madras campus.

Key Features

• It is the most comprehensive multimodal 3D atlas of the human brainstem developed so far.
• Covers brain development across different life stages; prenatal period, childhood and adulthood.
• Includes:
  • More than 200 brainstem nuclei and fibre tracts
  • Reconstructions derived from hundreds of serial brain sections
  • Data generated using eight complementary immunostains
  • Detailed mapping across more than 500 sections
• Developed using a high-throughput brain imaging and computing platform capable of transforming entire human brains into cell-resolution 3D atlases.
• The brainstem is a critical part of the brain that regulates essential functions such as breathing, heart rate, sleep, consciousness, and communication between the brain and spinal cord.
• To promote global scientific collaboration, the researchers have made ANCHOR freely available through an online platform, allowing researchers, clinicians, and students worldwide to access and utilize the atlas.

Source: AIR