This paper investigates Jacques Derrida's notion of grammatology in the context of contemporary digital writing technologies. It critically reassesses Ferdinand de Saussure’s linguistics and his concept of phonocentrism, underscoring phonography’s underestimated role in shaping the epistemological foundations of linguistics. Introducing original concepts such as the "logographic hiatus" and "grammatological polyphony," the paper challenges the limitations inherent in alphabetic linearity, particularly through the analysis of logographic writing systems like Chinese. Drawing on recent advancements in cognitive neuroscience, notably Stanislas Dehaene’s Neuronal Recycling Hypothesis, the paper proposes a neuro-grammatological framework. It argues that the human brain repurposes pre-existing neural circuits for reading, aligning visual symbols with ecological and neurological constraints. Further, the study addresses Derrida’s concept of "Mondialatinisation," examining the implicit cultural hegemony perpetuated through Latin-alphabet-based digital input methods (e.g., Romaji, Pinyin). This critical analysis highlights the subtle yet profound epistemological and cultural implications of imposing phonocentric and alphabetic models on traditionally logographic languages. Finally, the paper underscores the unresolved civilizational tensions emerging from the digital transformation of writing, emphasizing the urgent need for interdisciplinary dialogue bridging linguistics, semiotics, neuroscience, and cultural studies