HED schemas¶
Welcome to the HED schemas documentation! This repository contains the official HED (Hierarchical Event Descriptors) vocabulary schemas in multiple formats - providing the standardized vocabulary used across neuroscience research.
What is HED?¶
HED is a standardized vocabulary and annotation framework designed to systematically describe events in experimental data, particularly neuroimaging and behavioral data. It’s integrated into major neuroimaging standards:
Key features¶
Standard schema: Base HED vocabulary used across all domains
Library schemas: Specialized vocabularies for specific research areas (clinical, linguistic, etc.)
Multiple formats: Available in MediaWiki, XML, JSON, and TSV formats
Version control: Comprehensive versioning with DOIs for reproducibility
Open development: Community-driven schema evolution