Visuospatial imagery is a fruitful strategy for the digit span backward task: a study with near-infrared optical tomography

Citation
Y. Hoshi et al., Visuospatial imagery is a fruitful strategy for the digit span backward task: a study with near-infrared optical tomography, COGN BRAIN, 9(3), 2000, pp. 339-342
Citations number
19
Language
INGLESE
art.tipo
Article
Categorie Soggetti
Neurosciences & Behavoir
Journal title
COGNITIVE BRAIN RESEARCH
ISSN journal
0926-6410 → ACNP
Volume
9
Issue
3
Year of publication
2000
Pages
339 - 342
Database
ISI
SICI code
0926-6410(200006)9:3<339:VIIAFS>2.0.ZU;2-9
Abstract
Our newly developed 64-channel time-resolved optical tomographic imaging sy stem using near-infrared light enables us to obtain a quantitative image of hemoglobin concentration changes associated with neuronal activation in th e human brain [H. Eda, I. Oda, Y. Ito, Y. Wada, Y. Oikawa, Y. Tsunazawa, M. Takada, Y. Tsuchiya, Y. Yamashita, M. Oda, A. Sassaroll, Y. Yamada, M. Tam ura, Multi-channel time-resolved optical tomographic imaging system, Rev. S ci, Instrum., 70 (1999) 3595-3602]. Here, we used this optical imaging syst em to demonstrate that the backward digit span (DB) task activated the dors olateral prefrontal cortex (DLPFC) of each hemisphere more than the forward digit span (DF) task in healthy adult volunteers, and higher performance o f the DB task was closely related to the activation of the right DLPFC. The se results suggest that visuospatial imagery is a useful strategy for the D B task. Optical tomography described here is a new modality of neuropsychol ogical studies. (C) 2000 Elsevier Science B.V. All rights reserved.