Auditory/visual duration bisection in patients with left or right medial-temporal lobe resection.

Published

Journal Article

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.

Full Text

Duke Authors

Cited Authors

  • Melgire, M; Ragot, R; Samson, S; Penney, TB; Meck, WH; Pouthas, V

Published Date

  • June 2005

Published In

Volume / Issue

  • 58 / 1

Start / End Page

  • 119 - 124

PubMed ID

  • 15878732

Pubmed Central ID

  • 15878732

Electronic International Standard Serial Number (EISSN)

  • 1090-2147

International Standard Serial Number (ISSN)

  • 0278-2626

Digital Object Identifier (DOI)

  • 10.1016/j.bandc.2004.09.013

Language

  • eng