Tools for reading ephys data
Project description
ephysio
Python code for reading ephys files
openEphysIO
This module provides convenient access to continuous and event data saved by OpenEphys. For instance:
from ephysio import openEphysIO
import matplotlib.pyplot as plt
ldr = openEphysIO.Loader("/path/to/data")
# first probe
strm = ldr.spikestreams()[0]
# time x channel map of the data
dat = ldr.data(strm)
# sampling rate in Hz
fs_Hz = ldr.samplingrate(strm)
STIMMARKERCHANNEL = 2
# time stamps of events in channel 2 on the NIDAQ, translated to neuropixel time
evts = ldr.nidaqevents()[STIMMARKERCHANNEL]
CHANNEL = 100
STIMNO = 10
# Start time of event #10
s0 = evts[STIMNO, 0]
# prepare to receive 100 ms of data
ds = np.arange(int(.1*fs_Hz))
# 100 ms of data following the stimulus
response = dat[s0:s0+ds, CHANNEL]
# plot data with time in ms on x-axis
plt.plot(ds*1000/fs_Hz, response)
Much more documentation is included in the module itself. Most users will want to use the Loader class rather than the various other functions.
Credits
Developed and tested by DAW and Frank Lanfranchi.
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