1. Signal¶
Quick description 
Signal is a data-mining module for 1-D, 2-D and 3-D datasets. It tries to offer a convenient way to inspect datasets, locate bad trials and reveal time-frequency properties.
Checkout the API of the visbrain.gui.Signal
class.

Contents
1.1. GUI Description¶
The GUI of the Signal module is subdivided into to two distinct components :
The grid : each datasets is re-arranged into a clickable 2-D grid so that all of the time-series of a dataset are represented inside. This idea of a grid was originally present into the VisPy examples and has been adapted for brain signals.
The signal canvas : the second layout display one trial at a time. This trial can either be represented as a continuous line or markers. It’s also possible to compute the histogram, time-frequency map or PSD.
1.2. Main features¶
- 2-D and 3-D datasets are disposed into a grid for an overview of an entire dataset
- Zoom, translate and double click on a signal to enlarge it
- Plot one time-series at a time
- Navigate across all of the time-series present in the dataset
- Change the plotting form (continuous line, markers, histogram, time-frequency map, power spectrum density (PSD))
- Load and export annotated trials
- De-trending and de-meaning
- Filtering (lowpass, highpass, bandpass, bandstop)
- Extract the amplitude, phase or power in specific frequency bands
- Take a screenshot (of the entire window, or the grid canvas only or of the signal canvas only)
1.3. Import and use Signal¶
The Signal
module can be imported as follow :
from visbrain.gui import Signal
1.4. Shortcuts¶
go = Grid canvas only
so = Signal canvas only
Keys |
Description |
---|---|
Double click (go) |
Enlarge signal under the mouse cursor |
n (so) |
Go to the next signal |
b (so) |
Go to the previous signal |
Double click (so) |
Insert annotation |
g |
Display / hide grid |
s |
Display / hide signal |
<delete> (go and so) |
Reset the camera |
CTRL + t |
Display shortcuts |
CTRL + d |
Display / hide setting panel |
CTRL + n |
Take a screenshot |
CTRL + q |
Close Sleep graphical interface |