HED specification¶
Welcome to the official specification for Hierarchical Event Descriptors (HED), a system for annotating events and experimental structure using controlled vocabularies. The HED ecosystem includes:
Vocabularies - Standardized terms organized in hierarchical schemas
Annotation tools - Software for creating and validating HED annotations
Analysis tools - Methods for searching and analyzing HED-annotated data
Community schemas - Domain-specific extensions to the base vocabulary
Core specification¶
The core chapters provide the foundation for understanding and using HED.
Advanced topics¶
These chapters cover specialized aspects of the HED ecosystem.
Reference materials¶
Additional technical reference and validation information.