Catalogo Articoli (Spogli Riviste)

OPAC HELP

Titolo:
Pseudo-random procedures for rapid presentation rates using optical imaging and spectroscopy
Autore:
Martindale, J; Berwick, J; Johnston, D; Jones, M; Zheng, Y; Coffey, P; Paley, M; Mayhew, J;
Indirizzi:
Univ Sheffield, Dept Acad Radiol, Sheffield S10 2TP, S Yorkshire, England Univ Sheffield Sheffield S Yorkshire England S10 2TP S Yorkshire, England Univ Sheffield, Dept Psychol, Sheffield S10 2TP, S Yorkshire, England UnivSheffield Sheffield S Yorkshire England S10 2TP S Yorkshire, England
Titolo Testata:
NEUROREPORT
fascicolo: 10, volume: 11, anno: 2000,
pagine: 2247 - 2252
SICI:
0959-4965(20000714)11:10<2247:PPFRPR>2.0.ZU;2-Y
Fonte:
ISI
Lingua:
ENG
Soggetto:
FUNCTIONAL ARCHITECTURE; INTRINSIC SIGNALS; NEURAL ACTIVITY;
Keywords:
event-related; haemodynamic response; optical imaging; rapid presentation; selective averaging; vibrissal stimulation;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Life Sciences
Citazioni:
13
Recensione:
Indirizzi per estratti:
Indirizzo: Mayhew, J Univ Sheffield, Dept Acad Radiol, Sheffield S10 2TP, S Yorkshire, England Univ Sheffield Sheffield S Yorkshire England S10 2TP e, England
Citazione:
J. Martindale et al., "Pseudo-random procedures for rapid presentation rates using optical imaging and spectroscopy", NEUROREPORT, 11(10), 2000, pp. 2247-2252

Abstract

Optical imaging of rat barrel cortex has provided detailed spatio-temporalmaps of functional cortical architecture. We describe an event-related procedure (ERP) for optical imaging based on selective signal averaging as reported by Burock ct ol, using an anti-correlative pseudo-random event sequence. The sequence used Is vibrissal stimulation at 5 Hz, with an interevent interval of 2s. This rapid presentation rate allows for greater statisticalpower per unit time, and allows for direct comparison of event-related studies with other imaging modalities. The spatio-temporal characteristics of single wavelength and spectrographic results were found to be comparable with those obtained by standard techniques, although a general lessening of haemodynamic response function (HRF) was noted. We also describe a method oflocating barrel activity by spectral analysis of summed event data. Using this technique, the power spectrum of remitted light from the barrel regionwas found to peak within +/-0.12 Hz of the inter-event interval frequency. NeuroReport 11:2247-2252 (C) 2000 Lippincott Williams & Wilkins.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 23/01/20 alle ore 03:40:21