<p><i>Psychophysics and Experimental Phenomenology of Pattern Cognition</i> examines the cognitive transformations that underly this cognitive system, and the specialized subsystems for processing these transformations. Sections cover symmetry cognition, contour perception, and geometric illusion. Weight sensation is also discussed, as are repetitive and dot patterns. Incorporating the fields of psychophysics and experimental phenomenology, pattern cognition is examined from both the physical and mental sensory perspective, providing a comprehensive view of this cognitive system.</p>