From 4e6bba9d0b150bc960fd4b587a086aa5b85b1032 Mon Sep 17 00:00:00 2001
From: Alexandre Gramfort <alexandre.gramfort@m4x.org>
Date: Tue, 9 Aug 2022 15:11:47 +0200
Subject: [PATCH] WIP : attempt to use units from channels.tsv

---
 mne_bids/read.py | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/mne_bids/read.py b/mne_bids/read.py
index f653dcdf3..f5ebfab48 100644
--- a/mne_bids/read.py
+++ b/mne_bids/read.py
@@ -577,6 +577,13 @@ def _handle_channels_reading(channels_fname, raw):
 
         raw.info['bads'] = bads_avail
 
+    if 'units' in channels_dict:
+        for k, (ch_type, ch_unit) in enumerate(zip(
+                channels_dict['type'],
+                channels_dict['units'])):
+            scaling = mne.io.base._get_scaling(ch_type.lower(), ch_unit)
+            raw._raw_extras[0]['units'][k] /= scaling
+
     return raw