stimupy.stimuli.hermanns#

Demos#

Functions#

grid

Hermann's (1870) grid
grid(visual_size=None, ppd=None, shape=None, element_size=None, intensity_background=0.0, intensity_grid=1.0)[source]#

Hermann’s (1870) grid

Parameters:

  • visual_size (Sequence[Number, Number], Number, or None (default)) – visual size [height, width] of grating, in degrees

  • ppd (Sequence[Number, Number], Number, or None (default)) – pixels per degree [vertical, horizontal]

  • shape (Sequence[Number, Number], Number, or None (default)) – shape [height, width] of grating, in pixels

  • element_size ((float, float, float)) – height, width and thickness of individual elements in degree visual angle

  • intensity_background (float) – value of background

  • intensity_grid (float) – value of grid

Returns:

dict with the stimulus (key: “img”), empty mask (key: “target_mask”), and additional keys containing stimulus parameters

Return type:

dict[str, Any]

References

Hermann L (1870).

Eine Erscheinung simultanen Contrastes”. Pflügers Archiv für die gesamte Physiologie. 3: 13-15. https://doi.org/10.1007/BF01855743