HED task catalog

This catalog defines 103 standard cognitive and behavioral neuroscience tasks and 172 cognitive processes organized into 19 categories. It is part of the HED (Hierarchical Event Descriptors) standardization effort, which aims to provide uniform, machine-readable annotation of experimental events in neuroscience data.

The catalog provides standard definitions, inclusion criteria, named variations, and process linkages for widely used experimental paradigms, enabling consistent annotation across laboratories and datasets.

Catalog at a glance

Item	Count
Tasks	103
Cognitive processes	172
Process categories	19
Task–process links	486

Contents

• Task catalog
  • Tasks
• Process catalog
  • Categories
• Cross-reference: tasks and processes
  • Processes by category → tasks
  • Tasks → processes
• Criteria and methodology
  • Task Selection and Variation Criteria
  • Process Selection and Definition Criteria