Automatic wiring

Here is an example on how to handle the wiring automatically and to get the device_channel_indices.

from pprint import pprint

import numpy as np
import matplotlib.pyplot as plt

from probeinterface import Probe, get_probe
from probeinterface.plotting import plot_probe

Download one probe:

manufacturer = 'neuronexus'
probe_name = 'A1x32-Poly3-10mm-50-177'

probe = get_probe(manufacturer, probe_name)
print(probe)

A1x32-Poly3-10mm-50-177 - neuronexus - 32ch - 1shanks

We can “wire” this probe to a recording device. Imagine we connect this Neuronexus probe with an Omnetic to an Intan RHD headstage.

Using the wiring documentation from these two sites: https://neuronexus.com/wp-content/uploads/2018/09/Wiring_H32.pdf http://intantech.com/RHD_headstages.html?tabSelect=RHD32ch&yPos=0

After a long headache we can figure out the wiring to the device manually and set it using the probe.set_device_channel_indices() function:

device_channel_indices = [
    16, 17, 18, 20, 21, 22, 31, 30, 29, 27, 26, 25, 24, 28, 23, 19,
    12, 8, 3, 7, 6, 5, 4, 2, 1, 0, 9, 10, 11, 13, 14, 15]
probe.set_device_channel_indices(device_channel_indices)

In order to ease this process, probeinterface also includes some commonly used wirings based on standard connectors. In our case, we can simply use:

probe.wiring_to_device('H32>RHD2132')
print(probe.device_channel_indices)

[16 17 18 20 21 22 31 30 29 27 26 25 24 28 23 19 12  8  3  7  6  5  4  2
  1  0  9 10 11 13 14 15]

In this figure we have 2 numbers for each contact:

• the upper number “prbXX” is the Neuronexus index (one-based)

• the lower “devXX” is the channel on the Intan device (zero-based)

fig, ax = plt.subplots(figsize=(5, 15))
plot_probe(probe, with_contact_id=True, with_device_index=True, ax=ax)


plt.show()

"""
Available wiring "pathways"
---------------------------

The available pathways can be found in the `probeinterface.wiring <>`_ module.

The following pathways are available:
"""

from probeinterface import get_available_pathways

print(get_available_pathways())

['H32>RHD2132', 'ASSY-156>RHD2164', 'ASSY-116>RHD2132', 'ASSY-77>Adpt.A64-Om32_2x-sm-NN>RHD2164', 'ASSY-77>Adpt.A64-Om32_2x-sm-NN>two_RHD2132', 'cambridgeneurotech_mini-amp-64']