When the stimulus object is a circle Ss report many different kinds of experience apart from the perception of the circle. These include (amongst many others) radii, polygons, concentric circles, and small straight lines. Most of these experiences are characterized by rhythmic oscillations for which frequency measurements are given in c/s.
No takes yet. Share an insight, caveat, or question.
Kristian Holt‐Hansen (1967) studied this question.
Synapse has enriched 2 closely related papers on similar clinical questions. Consider them for comparative context: