stereotaxic coordinates
Pronunciation: STER-ee-oh-tak-sik
Three-dimensional coordinate system used to precisely locate anatomical structures within the brain for research and clinical purposes.
Full Definition
Stereotaxic coordinates provide a standardized three-dimensional reference system for identifying specific locations within the brain. The system uses anatomical landmarks such as the anterior commissure and posterior commissure to establish a consistent coordinate space. Coordinates are typically expressed as X (left-right), Y (anterior-posterior), and Z (superior-inferior) values measured in millimeters from a defined origin point. This system enables researchers to report precise brain locations across studies and allows for accurate targeting in neurosurgical procedures and experimental interventions.
Usage
Usage note: Often shortened to 'coordinates' in neuroimaging contexts where stereotaxic is implied.
In Context
- "The electrode was positioned at stereotaxic coordinates X=±5, Y=+10, Z=-3 mm." — Neurosurgical procedure note
- "All activation peaks are reported in stereotaxic coordinates normalized to MNI space." — fMRI methodology section