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Free Operant Session Analyzer for Med-PC Output Files

Upload Med-PC output files and get clean data, publication-ready figures, and AI-powered session QA — all in your browser.

MED-PC ParsingSession FiguresAI Quality Check

Try it out

Load example operant session data to see the full workflow

Drag & drop Med-PC output files

or click to browse — .txt files, one or more

  • Parse Med-PC, Coulbourn, and Lafayette raw output files to clean CSV
  • Generate publication-ready cumulative response curves
  • Analyze progressive ratio breakpoint sessions
  • Run AI-powered session quality assessment (Claude-based anomaly detection)
  • Compare sessions across subjects and conditions

Don't use for

  • Video-based behavioral scoring (use tracking software instead)
  • Free operant observation without automated equipment
  • Human behavioral tasks (designed for animal operant data)

Resources

  • Med-PC version matches your protocol file
  • Box number in header matches physical box
  • Subject ID format is consistent across sessions
  • Data file saved to correct directory
  • Array declarations match expected event counts
  • Schedule parameters (ratio, interval) set correctly
  • House light and stimulus lights tested
  • Pellet dispenser loaded and dispensing confirmed

What This Operant Session Analyzer Extracts

Session Metadata

Subject, group, box, date, duration, MSN program name

Event Arrays

Active/inactive responses, reinforcers, head entries, latencies

Summary Statistics

Response rate, breakpoint, accuracy, omissions, d-prime

This Tool vs MED-PC to Excel

Med Associates bundles a "MED-PC to Excel" utility with their software. It transfers raw data into Excel, but requires manual macro setup for each protocol, processes one file at a time, and provides no QA or visualization. This tool parses files instantly in your browser, auto-detects your schedule, generates publication-ready figures, computes summary statistics, and optionally runs AI-powered session QA — all in one step, for an entire batch of sessions.

FeatureMED-PC to ExcelOperant Session Analyzer
ParsingRequires Excel macros, manual setup per protocolInstant browser-based, auto-detects schedule
QAManual — check each session by eyeAI flags anomalies, equipment issues, outliers
VisualizationCopy into GraphPad/Prism manuallyPublication-ready figures generated instantly
Batch processingOne file at a timeUpload entire experiment at once
Export formatsExcel onlyCSV (wide/long), PNG, SVG, methods text
Schedule supportGenericSchedule-aware analysis (FR, PR, 5-CSRTT, etc.)
CostBundled with Med-PC licenseFree
PrivacyDesktop softwareClient-side — data never leaves your browser

How Med-PC Output Files Are Structured

Med-PC output files are plain text with two sections: a header block and one or more lettered data arrays. The header contains session metadata — subject ID, experiment name, group, box number, start/end times, and the MSN (program name). Below the header, arrays labeled A through Z hold numeric data whose meaning depends entirely on the Med-PC program that generated them. In a typical self-administration program, Array A might hold active lever press timestamps, Array B inactive presses, and Array C reinforcer deliveries — but another lab's program might use completely different mappings. This is why Med-PC data requires protocol-specific parsing. The tool auto-detects common schedule types from the MSN field and applies the appropriate array mapping, or you can configure it manually.

This Tool vs MED-PC to Excel

Med Associates bundles a "MED-PC to Excel" utility with their software. It transfers raw data into Excel, but requires manual macro setup for each protocol, processes one file at a time, and provides no QA or visualization. This tool parses files instantly in your browser, auto-detects your schedule, generates publication-ready figures, computes summary statistics, and optionally runs AI-powered session QA — all in one step, for an entire batch of sessions.

For Labs Running Med Associates Operant Chambers

You shouldn't need a rescue tool for your data. ConductScience operant systems export clean, structured data natively — ready for analysis without parsing. ConductMaze provides automated protocol management with built-in session QA at the hardware level. Direct CSV/JSON export means no proprietary formats, no array decoding, and no guessing which letter maps to which variable.

Frequently Asked Questions

Next Steps

Operant Conditioning

Med Associates, Coulbourn, and Lafayette operant conditioning systems

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Behavioral Mazes

Morris water maze, Barnes maze, and elevated plus maze

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