{"pk":50326,"title":"Early Neurophysiological Signatures of Multi-digit Number Length Processing","subtitle":null,"abstract":"The Hindu-Arabic numeral system associates number length and value. This study investigated number length encoding in multi-digit number processing while controlling for overall visual size. Using scribbled line patterns to equalize visual extent, participants (N=27) compared tie numbers to a fixed standard (\"555\"), creating congruent (e.g., \"6666\" vs. \"555\") and incongruent (e.g., \"77\" vs. \"555\") conditions where number/string length and numerical value matched or conflicted. Targets were compared based on numerical value or string length. Findings revealed three distinct processing stages: First, enhanced N1 negativity (120-150 ms) at parieto-occipital sites reflected early length encoding, with greater amplitudes for larger string-length distances. Second, decreased P2p amplitudes (150-190 ms) at parietal sites varied with both numerical and string-length distances, indicating refined magnitude processing. Finally, decreased P3 amplitudes (300-360 ms) at central sites for incongruent trials reflected cognitive conflict resolution. These findings provide novel evidence consistent with an early number length encoding mechanism.","language":"eng","license":{"name":"","short_name":"","text":null,"url":""},"keywords":[{"word":"Cognitive Neuroscience; Psychology; Electroencephalography (EEG)"}],"section":"Member Abstracts with Poster Presentation","is_remote":true,"remote_url":"https://escholarship.org/uc/item/5gv4v05v","frozenauthors":[{"first_name":"Nadav","middle_name":"","last_name":"Neumann","name_suffix":"","institution":"Ariel University","department":""},{"first_name":"Michal","middle_name":"","last_name":"Pinhas","name_suffix":"","institution":"Ariel University","department":""}],"date_submitted":null,"date_accepted":null,"date_published":"2025-01-01T18:00:00Z","render_galley":null,"galleys":[{"label":"PDF","type":"pdf","path":"https://journalpub.escholarship.org/cognitivesciencesociety/article/50326/galley/38288/download/"}]}