stimupy.stimuli.delboeufs

stimupy.stimuli.delboeufs#

Demos #

Functions#

`delboeuf`	Delboeuf's (1865) stimulus
`two_sided`	Delboeuf's (1865) stimulus

delboeuf(visual_size=None, ppd=None, shape=None, outer_radius=None, outer_line_width=0, target_radius=None, intensity_outer_line=0.0, intensity_target=0.0, intensity_background=1.0)[source]#

Delboeuf’s (1865) stimulus

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
outer_radius (Number) – radius of outer circle
outer_line_width (Number) – line width of outer circle in degrees visual angle if 0 (default), set line width to 1 px
target_radius (Number) – radius of target circle
intensity_outer_line (Number) – intensity value of outer circle line (default: 0)
intensity_target (Number) – intensity value of target (default: 0)
intensity_background (Number) – intensity value of background (default: 1)

Returns:

dict with the stimulus (key: “img”), mask with integer index for the target (key: “target_mask”), and additional keys containing stimulus parameters

Return type:

dict[str, Any]

References

Delboeuf, F. J. (1865).: Note sur certaines illusions d’optique: Essai d’une théorie psychophysique de la maniere dont l’oeil apprécie les distances et les angles. Bulletins de l’Académie Royale des Sciences, Lettres et Beaux-arts de Belgique, 19, 195-216.

two_sided(visual_size=None, ppd=None, shape=None, outer_radius=None, outer_line_width=0, target_radius=None, intensity_outer_line=0.0, intensity_target=0.0, intensity_background=1.0)#