spharapy.datasets
: Sample data sets¶
The spharapy.datasets
: module includes utilities to provide
sample datasets.
- spharapy.datasets.load_eeg_256_channel_study()[source]¶
Load sensor setup and measured EEG data
The data set consists of a triangulation of a 256 channel equidistant EEG cap and EEG data from previously performed experiment addressing the cortical activation related to somatosensory-evoked potentials (SEP). During the experiment the median nerve of the right forearm was stimulated by bipolar electrodes (stimulation rate: 3.7 Hz, interstimulus interval: 270 ms, stimulation strength: motor plus sensor threshold [MAB+99][CAC+08], constant current rectangular pulse wave impulses with a length of 50 mu s, number of stimulations: 6000). Data were sampled at 2048 Hz and software high-pass (24 dB/oct, cutoff-frequency 2 Hz) and notch (50 Hz and two harmonics) filtered. All trials were manually checked for artifacts, the remaining trials were averaged, see also S1 data set in [GEF+15].
Number of vertices
256
Number of triangles
480
SEP Data (EEG)
256 channels, 369 time samples
Time range
50 ms before to 130 ms after stimulation
Sampling frequency
2048 Hz
- Parameters
- None
- Returns
- triangulation and EEG data: dictionary
Dictionary-like object containing the triangulation of a simple triangular mesh. The attributes are: ‘vertlist’, the list of vertices, ‘trilist’, the list of triangles, ‘labellist’ the list of labels of the EEG channels, ‘eegdata’, an array containing the EEG data.
- spharapy.datasets.load_minimal_triangular_mesh()[source]¶
Returns the triangulation of a single triangle
The data set consists of a list of three vertices at the unit vectors of vector space :math:`mathbb{R}^3`and a list of a single triangle.
Number of vertices
3
Number of triangles
1
- Parameters
- None
- Returns
- triangulationdictionary
Dictionary-like object containing the triangulation of a single triangle. The attributes are: ‘vertlist’, the list of vertices, ‘trilist’, the list of triangles.
- spharapy.datasets.load_simple_triangular_mesh()[source]¶
Returns the triangulation of a simple triangular mesh
The data set consists of a triangulation of an unit hemisphere.
Number of vertices
131
Number of triangles
232
- Parameters
- None
- Returns
- triangulationdictionary
Dictionary-like object containing the triangulation of a simple triangular mesh. The attributes are: ‘vertlist’, the list of vertices, ‘trilist’, the list of triangles.