Catalogo Articoli (Spogli Riviste)

OPAC HELP

Titolo:
Neuronal correlates of encoding and retrieval in episodic memory during a paired-word association learning task: a functional magnetic resonance imaging study
Autore:
Mottaghy, FM; Shah, NJ; Krause, BJ; Schmidt, D; Halsband, U; Jancke, L; Muller-Gartner, HW;
Indirizzi:
Univ Dusseldorf Hosp, Dept Nucl Med, D-40225 Dusseldorf, Germany Univ Dusseldorf Hosp Dusseldorf Germany D-40225 0225 Dusseldorf, Germany Res Ctr Julich, Dept Nucl Med KME, Julich, Germany Res Ctr Julich JulichGermany ulich, Dept Nucl Med KME, Julich, Germany Res Ctr Julich, Inst Med IME, Julich, Germany Res Ctr Julich Julich Germany Ctr Julich, Inst Med IME, Julich, Germany Univ Tubingen, Inst Med Psychol & Behav Neurobiol, Tubingen, Germany Univ Tubingen Tubingen Germany hol & Behav Neurobiol, Tubingen, Germany Otto Von Guericke Univ, Inst Gen Psychol, Magdeburg, Germany Otto Von Guericke Univ Magdeburg Germany en Psychol, Magdeburg, Germany
Titolo Testata:
EXPERIMENTAL BRAIN RESEARCH
fascicolo: 3, volume: 128, anno: 1999,
pagine: 332 - 342
SICI:
0014-4819(199910)128:3<332:NCOEAR>2.0.ZU;2-1
Fonte:
ISI
Lingua:
ENG
Soggetto:
POSITRON-EMISSION-TOMOGRAPHY; POSTERIOR PARIETAL CORTEX; MEDIAL PULVINAR NUCLEUS; WORKING-MEMORY; PREFRONTAL CORTEX; RHESUS-MONKEY; FRONTAL-LOBE; THALAMIC INFARCTION; VERBAL MEMORY; VISUAL-CORTEX;
Keywords:
episodic memory; paired word association; fMRI;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Life Sciences
Citazioni:
82
Recensione:
Indirizzi per estratti:
Indirizzo: Mottaghy, FM Univ Dusseldorf Hosp, Dept Nucl Med, Moorenstr 5, D-40225 Dusseldorf, Germany Univ Dusseldorf Hosp Moorenstr 5 Dusseldorf Germany D-40225
Citazione:
F.M. Mottaghy et al., "Neuronal correlates of encoding and retrieval in episodic memory during a paired-word association learning task: a functional magnetic resonance imaging study", EXP BRAIN R, 128(3), 1999, pp. 332-342

Abstract

The investigation of memory function using functional magnetic resonance imaging (fMRI)) is an expanding field of research. The aim of this study wasto demonstrate brain-activity patterns related to a word-pair association task employing a whole-brain EPI sequence. Six right-handed, healthy male volunteers (mean age: 27.5 years) took part in the study. fMRI was performedat a field strength of 1.5 Tesla with 26-32 slices parallel to the AC-PC line, depending on individual brain size. Distributed brain regions were activated in episodic encoding and retrieval with similarities, but also (distinct) differences in activation patterns. Bilateral prefrontal cortical areas were involved when comparing encoding as well as retrieval to the reference condition (nonsense words). Furthermore, activation was observed in cerebellar areas during encoding, and activation in bilateral parietal areas (precuneus and inferior parietal cortex) was differentially more pronounced during retrieval. The activation of left dorsomedial thalamus during retrieval of high imagery-content word-pair associates may point to the role of this structure in episodic retrieval. The direct cognitive subtraction of encoding minus retrieval yielded a differentially larger left prefrontal activation. There was a differentially higher right prefrontal activation during retrieval than during encoding, underlining the proposed right/left asymmetry for episodic memory processes.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 18/01/20 alle ore 11:36:02