Converter

Import data from various formats into PRISM/BIDS structure.

→ For a guided walkthrough of the conversion workflow, see Studio Overview.

Supported Formats

Format	Extension	Notes
Excel	`.xlsx`, `.xls`	Multiple sheets supported
CSV	`.csv`	Comma-separated values
TSV	`.tsv`	Tab-separated values
SPSS	`.save`	With value labels preserved
LimeSurvey	`.csv`	Special handling for LS exports

Conversion Workflow

1. Select Source File

Click Browse or drag-and-drop your file
PRISM auto-detects the format and delimiter

2. Preview Data

Review detected columns
Check first few rows for correctness
Adjust delimiter if needed (CSV/TSV)

3. Map Columns

Required:

Participant ID Column: Which column contains subject IDs

Optional:

Session Column: For multi-session studies
Task Name: Label for this data (e.g., “depression”, “anxiety”)

4. Select Variables

Choose which columns to include in the output:

Survey items
Demographic variables
Timestamps

5. Convert

Click Convert to generate:

BIDS-structured TSV files (sub-XXX_task-YYY_survey.tsv)
JSON sidecar files with metadata

6. Save to Project

If you have a project loaded:

Click Save to Project
Files are copied to sub-XXX/survey/ at project root

Output Structure

For a source file with participants sub-001 and sub-002:

my_study/
├── sub-001/
│   └── survey/
│       ├── sub-001_task-depression_survey.tsv
│       └── sub-001_task-depression_survey.json
└── sub-002/
    └── survey/
        ├── sub-002_task-depression_survey.tsv
        └── sub-002_task-depression_survey.json

LimeSurvey Import

LimeSurvey exports require special handling:

Export from LimeSurvey as CSV with codes
Load in Converter
PRISM automatically:
- Parses question groups
- Extracts response codes
- Generates metadata from survey structure

→ See LimeSurvey Integration for details.

Participants Mapping

For demographic data with custom encodings:

→ See Participants Mapping