You signed in with another tab or window. Reload to refresh your session.You signed out in another tab or window. Reload to refresh your session.You switched accounts on another tab or window. Reload to refresh your session.Dismiss alert
Copy file name to clipboardExpand all lines: User-Manual/Plugins/Common-Average-Reference.html
+15-1Lines changed: 15 additions & 1 deletion
Original file line number
Diff line number
Diff line change
@@ -515,6 +515,19 @@
515
515
</tr>
516
516
</tbody>
517
517
</table>
518
+
<divclass="admonition tip">
519
+
<pclass="admonition-title">Tip</p>
520
+
<p>If you’re using Neuropixels probes, the <aclass="reference internal" href="Neuropixels-CAR.html#neuropixelscar"><spanclass="std std-ref">Neuropixels CAR</span></a> plugin will be more effective at removing noise.</p>
521
+
</div>
522
+
<sectionid="overview">
523
+
<h2>Overview<aclass="headerlink" href="#overview" title="Permalink to this heading">#</a></h2>
524
+
<p>Common average referencing is a widely used technique for removing noise from extracellular recordings. Since artifacts often originate from sources that are distant from the electrodes, they induce similar voltage fluctuations across all channels. Thus, computing the average value of some or all channels, and then subtracting this from the incoming data, can help isolate the signals that are generated locally.</p>
525
+
<p>This plugin can be used for common average referencing across any number of channels, or it can perform simple digital referencing by selecting a single channel as the reference. If different subsets of electrodes are differentially affected by noise sources, multiple common average reference plugins can be used.</p>
526
+
<divclass="admonition note">
527
+
<pclass="admonition-title">Note</p>
528
+
<p>It’s recommended to place this plugin <em>after</em> the first Record Node in your signal chain, so the data is saved without referencing applied. Global referencing can be easily performed offline, for example by using a common median reference that is less sensitive to outliers (but is more computationally intensive than averaging).</p>
529
+
</div>
530
+
</section>
518
531
<sectionid="plugin-configuration">
519
532
<h2>Plugin configuration<aclass="headerlink" href="#plugin-configuration" title="Permalink to this heading">#</a></h2>
520
533
<p>There are three settings that affect the behavior of the Common Average Reference:</p>
@@ -529,7 +542,7 @@ <h2>Plugin configuration<a class="headerlink" href="#plugin-configuration" title
529
542
<sectionid="working-with-multiple-data-streams">
530
543
<h2>Working with multiple data streams<aclass="headerlink" href="#working-with-multiple-data-streams" title="Permalink to this heading">#</a></h2>
531
544
<p>The “Reference” and “Affected” channels are only applied within a single stream. Because different streams may be sampled asynchronously, it’s not possible to reference channels from one stream to channels in another.</p>
532
-
<p>To change the settings for a particular stream, make sure it is active in the stream selector (accsesed by clicking the vertical lines on the right-hand side of the plugin editor).</p>
545
+
<p>To change the settings for a particular stream, make sure it is active in the stream selector (accessed by clicking the vertical lines on the right-hand side of the plugin editor).</p>
533
546
</section>
534
547
</section>
535
548
@@ -580,6 +593,7 @@ <h2>Working with multiple data streams<a class="headerlink" href="#working-with-
<liclass="toc-h2 nav-item toc-entry"><aclass="reference internal nav-link" href="#working-with-multiple-data-streams">Working with multiple data streams</a></li>
.. tip:: If you're using Neuropixels probes, the :ref:`neuropixelscar` plugin will be more effective at removing noise.
23
+
24
+
Overview
25
+
=====================
26
+
27
+
Common average referencing is a widely used technique for removing noise from extracellular recordings. Since artifacts often originate from sources that are distant from the electrodes, they induce similar voltage fluctuations across all channels. Thus, computing the average value of some or all channels, and then subtracting this from the incoming data, can help isolate the signals that are generated locally.
28
+
29
+
This plugin can be used for common average referencing across any number of channels, or it can perform simple digital referencing by selecting a single channel as the reference. If different subsets of electrodes are differentially affected by noise sources, multiple common average reference plugins can be used.
30
+
31
+
.. note:: It's recommended to place this plugin *after* the first Record Node in your signal chain, so the data is saved without referencing applied. Global referencing can be easily performed offline, for example by using a common median reference that is less sensitive to outliers (but is more computationally intensive than averaging).
32
+
33
+
21
34
Plugin configuration
22
35
=====================
23
36
@@ -40,5 +53,5 @@ Working with multiple data streams
40
53
41
54
The "Reference" and "Affected" channels are only applied within a single stream. Because different streams may be sampled asynchronously, it's not possible to reference channels from one stream to channels in another.
42
55
43
-
To change the settings for a particular stream, make sure it is active in the stream selector (accsesed by clicking the vertical lines on the right-hand side of the plugin editor).
56
+
To change the settings for a particular stream, make sure it is active in the stream selector (accessed by clicking the vertical lines on the right-hand side of the plugin editor).
0 commit comments