voytekresearch / pacmat

Calculate phase-amplitude coupling in Matlab (relies on https://github.com/voytekresearch/pacpy).

pacmat

A MATLAB library for calculating phase-amplitude coupling.

This is a wrapper for a python module that can be found at, https://github.com/voytekresearch/pacpy

MATLAB version 2014b or later is required.

Install : MATLAB

Install : Python

Anaconda or another version of python with scientific packages should be installed.

Then, pacpy must be installed. To install:

pip install pacpy

Users must also install the statsmodels package (pip install statsmodels).

Usage

An example of calculating PAC from two simulated voltage signals using the phase-locking value (PLV) method:

	>> t = 0:.001:10; % Define time array
	>> lo = sin(t * 2 * pi * 6); % Create low frequency carrier
	>> hi = sin(t * 2 * pi * 100); % Create modulated oscillation
	>> hi(angle(hilbert(lo)) > -pi*.5) = 0; % Clip to 1/4 of cycle
	>> pac_plv(lo, hi, [4,8], [80,150], 1000) % Calculate PAC
	ans =
		0.9981