Catalogo Articoli (Spogli Riviste)

OPAC HELP

Titolo:
THE CONSTRUCTIVE NATURE OF VISION - DIRECT EVIDENCE FROM FUNCTIONAL MAGNETIC-RESONANCE-IMAGING STUDIES OF APPARENT MOTION AND MOTION IMAGERY
Autore:
GOEBEL R; KHORRAMSEFAT D; MUCKLI L; HACKER H; SINGER W;
Indirizzi:
MAX PLANCK INST HIRNFORSCH,DEUTSCHORDENSTR 46 D-60528 FRANKFURT GERMANY KLINIKUM JOHANN WOLFGANG GOETHE UNIV,ABT NEURORADIOL D-60528 FRANKFURT GERMANY
Titolo Testata:
European journal of neuroscience
fascicolo: 5, volume: 10, anno: 1998,
pagine: 1563 - 1573
SICI:
0953-816X(1998)10:5<1563:TCNOV->2.0.ZU;2-A
Fonte:
ISI
Lingua:
ENG
Soggetto:
HUMAN VISUAL-CORTEX; POSITRON EMISSION TOMOGRAPHY; HUMAN BRAIN; ILLUSORY CONTOURS; AREAS; REPRESENTATION; ATTENTION; LOCATION; ANATOMY; SYSTEM;
Keywords:
DORSAL PATHWAY; HUMAN BRAIN MAPPING; ILLUSORY CONTOURS; PERCEPTUAL ILLUSIONS;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Citazioni:
43
Recensione:
Indirizzi per estratti:
Citazione:
R. Goebel et al., "THE CONSTRUCTIVE NATURE OF VISION - DIRECT EVIDENCE FROM FUNCTIONAL MAGNETIC-RESONANCE-IMAGING STUDIES OF APPARENT MOTION AND MOTION IMAGERY", European journal of neuroscience, 10(5), 1998, pp. 1563-1573

Abstract

Echoplanar functional magnetic resonance imaging was used to monitor activation changes of brain areas while subjects viewed apparent motion stimuli and while they were engaged in motion imagery. Human cortical areas MT (V5) and MST were the first areas of the 'dorsal' processing stream which responded with a clear increase in signal intensity to apparent motion stimuli as compared with flickering control conditions. Apparent motion of figures defined by illusory contours evoked greater activation in V2 and MT/MST than appropriate control conditions. Several areas of the dorsal pathway (V3A, MT/MST, areas in the inferior and superior parietal lobule) as well as prefrontal areas including FEF and BA 9/46 responded strongly when subjects merely imagined moving stimuli which they had seen several seconds before. The activation during motion imagery increased with the synaptic distance of an area from V1 along the dorsal processing stream. Area MT/MST was selectively activated during motion imagery but not during a static imagery controlcondition. The comparison between the results obtained with objectivemotion, apparent motion and imagined motion provides further insightsinto a complex cortical network of motion-sensitive areas driven by bottom-up and top-down neural processes.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 05/04/20 alle ore 18:52:19