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1 | 1 | # Ephys Atlas GUI |
2 | 2 |
|
3 | | -GUI to allow user to align electrophysiology data with histology data |
| 3 | +GUI to allow user to align electrophysiology data with histology data. Please refer to this wiki page for information on installation and usage https://github.com/int-brain-lab/iblapps/wiki |
4 | 4 |
|
5 | | -## Setup |
6 | 5 |
|
7 | | -Install the iblenv environment using the following instructions: |
8 | | -https://github.com/int-brain-lab/iblenv |
9 | | - |
10 | | -If you have previously installed the environment, an additional package that is required is SimpleITK. This can be |
11 | | -installed in the environment using, |
12 | | - |
13 | | -``` |
14 | | -conda activate iblenv |
15 | | -pip install SimpleITK |
16 | | -``` |
17 | | - |
18 | | -To launch the GUI run the following commands from a terminal |
19 | | -``` |
20 | | -conda activate iblenv |
21 | | -python <path to ephys_atlas_gui.py> |
22 | | -``` |
23 | | -e.g |
24 | | -``` |
25 | | -python int-brain-lab\iblapps\atlaselectrophysiology\ephys_atlas_gui.py |
26 | | -``` |
27 | | - |
28 | | -## Usage |
29 | | -### Getting Data |
30 | | -Upon launching, the GUI automatically finds subjects that have probe tracks traced. To select a subject |
31 | | -click on the subject drop down list (see figure below). A list of sessions for the chosen subject and |
32 | | -previous alignments associated with each session will then be loaded in the second and third drop down menus respectively. |
33 | | -If this is the first time an alignment is being conducted for a session the only alignment option will be 'original'. If, |
34 | | -however, the session has been previously aligned, it is possible to initiate the GUI from the previous alignment. Once the |
35 | | -drop down options have been chosen, click on the **Get Data** button to download the data. The gui will automatically |
36 | | -download all data necessary |
37 | | - |
38 | | -In the case that some data is not available on FlatIron, plots associated with this data will not be displayed and a |
39 | | -warning message is printed in the terminal. |
40 | | - |
41 | | -If you find that the histology image is not being found, please refer to the [histology image troubleshooting](#Histology-Image-Troubleshooting) section |
42 | | - |
43 | | - |
44 | | -### Layout |
45 | | -The GUI comprises four main figure areas. |
46 | | - |
47 | | - |
48 | | - |
49 | | -#### Figure 1 - Ephys Figure |
50 | | -The first figure contains three panels which display electrophysiology data in the form of: |
51 | | - |
52 | | -* Image Plots (2D representation of data in image or scatter plots) |
53 | | -* Line Plots (1D representation of data in a line plot) |
54 | | -* Probe Plots (2D representation of data as a heatmap overlaid on the Neuropixel 3B geometry) |
55 | | - |
56 | | - Different types of data can be viewed in each of the panels and the available options can be seen by clicking on the **Image Plots**, |
57 | | - **Line Plots** and **Probe Plots** menu bar. The display in each panel can be changed by clicking through the options in each menu bar or |
58 | | - by using the shortcut Alt+ 1, Alt + 2, Alt + 3, for the image, line and probe plots respectively. |
59 | | - |
60 | | - The order of the panels can also be rearranged by changing the view (under the **Display Options** menu bar) or by |
61 | | - pressing, Shift + 1, Shift + 2 or Shift + 3. |
62 | | - |
63 | | - #### Figure 2 - Histology Figure |
64 | | - The second figure displays the brain regions through which the traced probe track passes (the trajectory). It is split into |
65 | | - three panels, which display, from left to right, |
66 | | - * Scaled brain regions |
67 | | - * Scale factor applied to brain regions - represented as heatmap |
68 | | - * Original (unscaled) brain regions - for reference |
69 | | - |
70 | | -The black dotted lines on the left and right panels indicated the location along the trajectory of the first and last |
71 | | -electrode. The labels overlaid on the brain regions can be toggled on and off using Shift + L |
72 | | - |
73 | | -The actual scale factor value is displayed in the title of the colorbar (top of figure) when hovering over a region on |
74 | | -the scale factor plot. |
75 | | - |
76 | | - #### Figure 3 - Slice Figure |
77 | | -The third figure displays a tilted slice through the brain. The tilt of the slice displayed is determined by the line |
78 | | -of best fit through the traced points. Overlaid on the slice is a black line linking the traced points (the trajectory) |
79 | | -and the location of the electrodes on the Neuropixel probe along this trajectory (red points). When reference lines are added |
80 | | -to the Ephys and Histology figures, they are displayed as black dotted lines perpendicular to the local trajectory. |
81 | | -The collection of lines and points overlaid on the slice figure can be toggled on and off using Shift + C. |
82 | | - |
83 | | -There are three options for the tilted slice displayed (changed using Alt+ 4): |
84 | | -* Slice taken from red channel of histology image |
85 | | -* Slice taken from allen brain atlas |
86 | | -* Slice taken from allen brain atlas annotation |
87 | | - |
88 | | -The intensity of the slice images can be changed using the intensity scale bar located on the right hand side of the figure. |
89 | | - |
90 | | -#### Figure 4 - Fit Figure |
91 | | -The fourth figure provides a 2D representation of the scaling applied along the depth of the trajectory. Coordinates |
92 | | -are relative to the location of the most ventral electrode. Three lines are displayed in this figure |
93 | | -* Reference line (black dotted line) - reference for when no fit/scaling is applied |
94 | | -* Fit line (blue solid line) - piecewise fit along depth of trajectory |
95 | | -* Linear fit line (red dotted line) - linear fit along depth of trajectory (only present when two or more reference lines |
96 | | -are implemented) |
97 | | - |
98 | | -### Alignment |
99 | | -Reference line pairs are used to align features on the Ephys and Histology figures. A pair can be added to the GUI by |
100 | | -double clicking at any point on either the Ephys or Histology figure and the line on each figure moves independently. |
101 | | -Once the two lines of a reference pair line have been moved to the feature/landmark that needs to be aligned, the fit |
102 | | -can be applied by pressing the **Fit** button or by pressing Enter key. |
103 | | - |
104 | | -Different types of fit are applied depending on the number of reference lines implemented. |
105 | | - |
106 | | -#### One reference line |
107 | | -A fit applied with a single reference line pair will result in an offset. |
108 | | - |
109 | | -Two other methods (independent of reference lines) for applying an offset are available |
110 | | -* Drag the black dotted lines (indicate location of first and last electrode) on the left panel of the histology figure |
111 | | -to the desired position and press the **Offset** button or the 'o' key |
112 | | -* Pressing Shift + Up arrow or Shift + Down arrow will apply a +- 50 um offset |
113 | | - |
114 | | -#### Two reference lines |
115 | | -A fit applied with two reference line pairs will result in an offset and scaling of regions between the two reference line pairs. |
116 | | -The remaining regions, located beyond the reference lines, will be offset, however, will remain unscaled. |
117 | | - |
118 | | -#### Three or more reference lines |
119 | | -A fit applied with three or more reference line pairs will result in an offset and piecewise scaling of regions between each |
120 | | -of the reference lines. By default the remaining regions will be scaled according to a linear fit through all the reference lines |
121 | | -(red dotted line in fit figure). If instead, one wants to keep the regions beyond the reference lines unscaled, the default can be |
122 | | -turned off by un-ticking the linear fit checkbox located in the fit figure. |
123 | | - |
124 | | -When a fit is applied the location of the electrodes on the slice figure will update. |
125 | | - |
126 | | -A reference line can be deleted by hovering over the line and pressing Shift + D. N.B. Any fits anchored on a reference line will |
127 | | -be lost once the line is deleted. The reference lines can be hidden/ redisplayed using Shift + H. |
128 | | - |
129 | | -### Uploading data |
130 | | -Once the alignment is complete, the new locations of the electrode locations can be uploaded to Alyx by pressing the **Upload** |
131 | | -button or Shift + U. |
132 | | - |
133 | | -Upon upload, a window will pop-up asking to determine 1) the confidence in alignment, 2) the QC (which will label the insertion), 3) the reason for that QC (e.g. Drift and Noise seen in the recording). |
134 | | -<img width="294" alt="Capture d’écran 2021-03-19 à 11 04 04" src="https://user-images.githubusercontent.com/43007596/112831143-cdaa1480-9093-11eb-8fc2-12fd586e604b.png"> |
135 | | - |
136 | | - |
137 | | -### Additional Features |
138 | | -#### Session Notes |
139 | | -If any notes associated with a session have been uploaded to Alyx, these can be displayed as a popup by clicking on |
140 | | -**Session Information** on the menu bar and selecting **Session Notes** |
141 | | - |
142 | | -#### Region Information |
143 | | -Information about brain regions that has been entered in Alyx can be displayed by hovering over a brain region in the |
144 | | -histology figure and pressing Shift + I. This will bring up a popup with the brain regions organised according to the allen |
145 | | -atlas structure tree. |
146 | | - |
147 | | -#### Cluster Popup |
148 | | -When displaying the cluster plots on the 2D image plats, the cluster autocorrelogram and template waveform can be viewed in |
149 | | -a popup by clicking on a scatter point. It is possible to display many popups for different clusters. To collectively |
150 | | -minimise/ show the cluster popup windows press Alt + M (make sure your cursor is located on the main gui window, not a popup window). |
151 | | -To close the cluster popup windows press Alt + X |
152 | | - |
153 | | -#### Filter Units |
154 | | -By default, the plots in the Ephys figure are shown for all units that have been classified as 'Good' and 'Mua' following |
155 | | -spike sorting. The **Filter Unit** option in the menu bar can be used to restrict the type of unit displayed. |
156 | | - |
157 | | -#### Previous Fits |
158 | | -A total of 10 previous fits are stored in memory. One can move to previous fits by using the **Previous** and **Next** buttons or by using |
159 | | -the Left and Right arrow keys. |
160 | | - |
161 | | -#### Reset |
162 | | -To reset the GUI to the original state, i.e. no alignments, press the **Reset** button or Shift + R. |
163 | | - |
164 | | -#### Rescaling |
165 | | -It is possible to zoom in on some plots in the Ephys and Histology figures. To reset the axis press Shift + A. |
166 | | - |
167 | | -## Histology Image Troubleshooting |
168 | | -The naming convention used for subjects in the histology folder on FlatIron (http://ibl.flatironinstitute.org/histology/) |
169 | | -is not always consistent with the subject names stored in Alyx. While the code attempts to account for differences in |
170 | | -capitalisation or underscores, sometimes the naming in the histology is just too quirky. In these cases, it will be |
171 | | -necessary to manually download the histology image required for the GUI. |
172 | | - |
173 | | -The image file required is located in the *downsampledStacks_25/sample2ARA/* folder of the subject on FlatIron, and has |
174 | | -the extension **.....RD.tif** file. This file should be downloaded and placed in a folder called *histology* in the |
175 | | -associated subject folder on your local computer |
176 | | - |
177 | | -e.g. Download **STD_dsIBL_WITTEN_13_200109_121739_25_25_RD.tif** from |
178 | | -http://ibl.flatironinstitute.org/histology/wittenlab/IBL_Witten_13/downsampledStacks_25/sample2ARA/ |
179 | | - |
180 | | -and place this file in |
181 | | - |
182 | | -C:\Users\Mayo\Downloads\FlatIron\wittenlab\Subjects\ibl_witten_13\histology |
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