Kyokugen Chiikan - Tokuiten

Abstract The Japanese phrase kyokugen chiikan tokuiten (極限知覚特定点) can be rendered loosely as “the extreme‑limit of perception at a specific point.” Though not a standard term in mainstream philosophy or cognitive science, it encapsulates a fertile interdisciplinary problem: at what point does the human perceptual system transition from ordinary awareness to a qualitatively different mode of knowing? This essay unpacks the conceptual layers of kyokugen chiikan tokuiten , situates it within the broader literature on perceptual thresholds, phenomenology, and information theory, and proposes a working model that treats the “specific point” as a dynamic attractor in the coupling between organism and environment. The analysis demonstrates how this notion can illuminate debates on sensory limits, the phenomenology of “peak experiences,” and the design of technologies that aim to extend or manipulate human perception. 1. Introduction Human perception is both a window onto the world and a filter that shapes what we can know. Throughout history, philosophers—from Plato’s Forms to Kant’s transcendental aesthetic —have probed the boundaries of what can be seen, heard, or felt. In contemporary cognitive science, the term perceptual threshold denotes the minimal stimulus intensity required for detection (Gelfand, 2019). Yet the everyday language of thresholds often fails to capture the qualitative jump that can accompany a sudden re‑orientation of awareness—what phenomenologists call a “moment of seeing” (Merleau‑Ponty, 1945) or what psychologists label a “peak experience” (Maslow, 1964).

[ \fracd\mathbfXdt= \mathbfF(\mathbfX,\mathbfS) + \mathbf\eta(t) ] kyokugen chiikan tokuiten

[ \det\left(\frac\partial \mathbfF\partial \mathbfX\bigg|_\mathbfX_c\right)=0, ] In contemporary cognitive science

where ( \mathbfF ) captures deterministic dynamics and ( \mathbf\eta ) is noise. A critical point ( \mathbfX_c ) satisfies: 1964). [ \fracd\mathbfXdt= \mathbfF(\mathbfX