title: Auditory/visual duration bisection in patients with left or right medial-temporal lobe resection.
abstract: Patients with unilateral (left or right) medial temporal lobe lesions and normal control (NC) volunteers participated in two experiments, both using a duration bisection procedure. Experiment 1 assessed discrimination of auditory and visual signal durations ranging from 2 to 8 s, in the same test session. Patients and NC participants judged auditory signals as longer than equivalent duration visual signals. The difference between auditory and visual time discrimination was equivalent for the three groups, suggesting that a unilateral temporal lobe resection does not modulate the modality effect. To document interval-timing abilities after temporal lobe resection for different duration ranges, Experiment 2 investigated the discrimination of brief, 50-200 ms, auditory durations in the same patients. Overall, patients with right temporal lobe resection were found to have more variable duration judgments across both signal modality and duration range. These findings suggest the involvement of the right temporal lobe at the level of the decision process in temporal discriminations.
authors.affiliation: Unité de Neurosciences Cognitives et d'Imagerie Cérébrale, CNRS, UPR-640, Paris, France.
authors.forename: Manuela
authors.initials: M
authors.lastname: Melgire
authors.forename: Richard
authors.initials: R
authors.lastname: Ragot
authors.forename: Séverine
authors.initials: S
authors.lastname: Samson
authors.forename: Trevor B
authors.initials: TB
authors.lastname: Penney
authors.forename: Warren H
authors.initials: WH
authors.lastname: Meck
authors.forename: Warrren H
authors.initials: WH
authors.lastname: Meck
authors.forename: Viviane
authors.initials: V
authors.lastname: Pouthas
mesh_terms: D000161:Acoustic Stimulation; D000328:Adult; D000704:Analysis of Variance; D001307:Auditory Perception / Q000502:physiology*; D004827:Epilepsy / Q000503:physiopathology* / Q000601:surgery*; D005260:Female; D007839:Functional Laterality / Q000502:physiology*; D006801:Humans; D008297:Male; D008875:Middle Aged; D010775:Photic Stimulation; D012016:Reference Values; D013702:Temporal Lobe / Q000502:physiology* / Q000601:surgery; D013998:Time Perception / Q000502:physiology*; D014796:Visual Perception / Q000502:physiology*