Event Definitions

Task events for behavioral experiments are saved as events.tsv and events.json files (see BIDS Specification/Task Events). In addition to the event definitions provided in the BIDS specification, we REQUIRE the following data columns:

Table 1: Required additional columns in events definitions

Column	Description	Data Type	Example
event_type	Type of event, expressed as a character string.	String	CS, US. CS1p, …
stimulus_name	Name of the stimulus.	String	picture, sound, …

Additionally, we define the following event types which may be used to record events under certain experimental conditions.

Table 2: Specific Event Types

Event Type	Description
block_start	Start of experimental block
block_start	End of experimental block
response	Generic participant response to stimuli

Specific guidelines are different for different experiment types and are listed below:

Events:

• Event definitions for Fear Conditioning experiments