NCT07133230

Neurocognitive Correlates of the Influence of Number Word Syntax on Magnitude Processing

• Status: Not Yet Recruiting
• Phase: —
• Study type: Observational
• Enrollment: 84 (estimated)
• Sponsor: Centre Hospitalier St Anne · Academic / Other
• Sex: All
• Age: 18 Years – 45 Years
• Healthy volunteers: —

Summary

Linguistic irregularities in number naming systems, such as the inversion of number words, affect the processing of Arabic numerals. Recently, it has been claimed that there is even a syntactic representation of number words. participant investigate the neurofunctional correlates of the syntactic processing of number words by examining different levels of place-value processing in a study with two complementary successive phases (Group 1 and Group 2) in healthy adults. In the first phase with Group 1, participant evaluate the unit-decade compatibility effect (UDCE) in two-digit magnitude comparisons. In the second phase with Group 2, participant investigate the carry-over effect in two-digit addition problems.

Detailed description

Selection visit * Call for participants for pre-selection * Sending of information forms by mail * Making an appointment for the inclusion visit at GHU Paris * Information on the modalities, constraints and foreseeable risks of the study * Collection of informed consent * Verification of inclusion/non-inclusion criteria * Clinical examination: * Verification of medical history and drug treatments * Psychiatric pathology * Consumption of toxic substances (nicotine, alcohol, cannabis, etc.) * Manual lateralization will be assessed by the score on the Edinburgh questionnaire (Oldfield, 1971) * Collection of main medical history and concomitant treatments * Explanation of study procedures * MRI examination

Conditions

• Brain Activity

Timeline

• Start date: 2025-09-01
• Primary completion: 2027-10-01
• Completion: 2027-10-30
• First posted: 2025-08-20
• Last updated: 2025-08-20

Locations

1 site across 1 country: France