WE_circular05
=============


.. image:: /_static/generated_stimuli/papers.RHS2007.WE_circular05.png
   :alt: WE_circular05 stimulus example
   :align: center
   :width: 400px






.. py:function:: stimupy.papers.RHS2007.WE_circular05(ppd=PPD, pad=True)


   Ring (or circular White) stimulus as shown in Robinson, Hammon, & de Sa (2007) Fig 1l.
   Circle size: 16x16 deg
   Ring frequency: 1 cpd
   Ring width: 0.5 deg

   :param ppd: Resolution of stimulus in pixels per degree. (default: 32)
   :type ppd: int
   :param pad: If True, include padding to 32x32 deg (default: True)
   :type pad: bool

   :returns: dict with the stimulus (key: "img") and target mask (key: "target_mask")
             and additional keys containing stimulus parameters
   :rtype: dict of str

   .. rubric:: References

   Howe, P. D. L. (2005).
       White's effect:
       removing the junctions but preserving the strength of the illusion.
       Perception, 34, 557-564.