Functional Ventral Ramus Dominance Hypothesis for Comfortable and Appropriate Movement Acquisition (FVRD Hypothesis)

This paper proposes a structural definition of “comfort” based on the Functional Ventral Ramus Dominance (FVRD) Hypothesis, which posits the functional superiority of ventral ramus–dominated regions in acquiring comfortable and appropriate movements. Although "comfort" has remained undefined in scientific literature, this hypothesis frames it as “structural comfort” composed of three elements—integrity, predictability, and optionality—supporting the emergence of “subjective comfort” in a two-layered model. This version further clarifies that these components span distinct layers of abstraction—physical, informational, and conscious—and explores the hypothesis's potential for future quantifiability, application to artificial intelligence, and explanatory utility in phenomena such as placebo and nocebo effects. Drawing from interdisciplinary perspectives, including education, welfare, and technology, this paper discusses the clinical, scientific, and social implications of structurally redefining comfort through the lens of the FVRD Hypothesis.