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expyriment/expyriment

Platform-independent lightweight Python library for designing and conducting timing-critical behavioural and neuroimaging experiments

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Overview

Expyriment is an open-source and platform-independent lightweight Python
library for designing and conducting timing-critical behavioral and
neuroimaging experiments. The major goal is to provide a well-structured
Python library for script-based experiment development, with a high priority
being the readability of the resulting program code. Due to the availability
of an Android runtime environment, Expyriment is also suitable for the
development of experiments running on tablet PCs or smart-phones.

Expyriment has been tested extensively under Linux and Windows and is an
all-in-one solution, as it handles stimulus presentation, the recording of
input/output events, communication with other devices, and the collection and
preprocessing of data. Furthermore, it offers a hierarchical design structure,
which allows for an intuitive transition from the experimental design to a
running program. It is therefore also suited for students, as well as for
experimental psychologists and neuroscientists with little programming
experience.

GNU General Public License v3 (see details)
Florian Krause (florian@expyriment.org) & Oliver Lindemann (oliver@expyriment.org)

Documentation

Documentation can be found in the directory "documentation".
For online documentation see: https://docs.expyriment.org

Examples

For online examples see: https://github.com/expyriment/expyriment-stash/tree/master/examples

Installation

Expyriment can be installed via pip:

pip install expyriment

The latest stable release of Expyriment can be found at Github:
https://github.com/expyriment/expyriment/releases/latest

For detailed installation instructions, please see the online documentation:
https://docs.expyriment.org/Installation.html

Reference

Krause, F., & Lindemann, O. (2014). Expyriment: A Python library for cognitive
and neuroscientific experiments. Behavior Research Methods, 46(2), 416-428.
https://doi.org/10.3758/s13428-013-0390-6

Contributing

Join other
contributors
and help us out with Expyriment development! We are very happy to receive pull
requests on GitHub.

Languages

Python99.9%Makefile0.1%
GNU General Public License v3.0
Created August 6, 2013
Updated March 6, 2026
expyriment/expyriment | GitHunt