Fig. 9

Diagrams comparing the perception of an object in the environment and that of pressure phosphene. a Diagram showing the simultaneous occurrence of input-semblance loops on both sides of the inter-postsynaptic functional LINK resulting in the perception of an object. A ₁ and C ₁ are sensory receptor sets activated by stimuli originating from infinitesimally close locations on the object [see Fig. 4 for details]; b Formation of the pressure phosphene percept from the application of pressure over the eyeball. According to the present work, the minimal requirement for the perception of pressure phosphenes is the simultaneous activation of inter-postsynaptic functional LINKs from its both sides that induce perceptons at the inter-LINKed postsynapses. Thus, simultaneous input-semblance U-loops inducing perceptons from both sides of the inter-postsynaptic functional LINK can be regarded as the basic structure–function mechanism required for perception of pressure phosphenes. A_Semb: Semblance induced by the stimulus C ₁. C_Semb: Semblance induced by the stimulus A ₁