gemprf 0.1.6

A Python library for population receptive field (pRF) analysis

GEM-pRF

Welcome to GEM-pRF, a standalone, GPU-accelerated tool for population receptive field (pRF) mapping, built for large-scale fMRI analysis.

For theory and full method details, see our paper:

👉 Mittal et al. (2025): GEM-pRF: GPU-Empowered Mapping of Population Receptive Fields for Large-Scale fMRI Analysis https://www.biorxiv.org/content/10.1101/2025.05.16.654560v1

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Documentation

Full documentation is coming soon: https://gemprf.github.io/

For now, the paper above is the best reference for the mathematical and computational design.

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Installation

GEM-pRF relies on an NVIDIA GPU and CUDA. Make sure your system has:

• A compatible NVIDIA GPU
• A matching CUDA toolkit
• A matching NVCC compiler

1. Install GEM-pRF

pip install gemprf

Latest versions: https://pypi.org/project/gemprf/

2. Install CuPy (required)

GEM-pRF depends on CuPy, but CuPy must match your CUDA version — so it is not installed automatically.

Install the correct CuPy wheel for your system:

• https://docs.cupy.dev/en/stable/install.html#installing-cupy
• or via pip, for example:

pip install cupy-cuda12x

:::warning Install the CuPy variant that matches your CUDA version.

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You must install CuPy before running GEM-pRF.

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Running GEM-pRF

After installing gemprf and a compatible CuPy build, you can run GEM-pRF directly from Python.

Example

import gemprf as gp

gp.run("path/to/your_config.xml")

Configuration files

GEM-pRF uses XML configuration files to define analysis settings. See a sample config here:

https://github.com/siddmittal/GEMpRF_Demo/blob/main/sample_configs/sample_config.xml

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Quick workflow

1. Install GEM-pRF → pip install gemprf

2. Install the correct CuPy for your CUDA environment

3. Prepare your XML config file

4. Run:

   import gemprf as gp
   gp.run("config.xml")
   

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