Neglect without extinction.
A patient, AB, is reported who showed clear signs of neglect but no extinction (N+ E-). Several hypotheses proposed to account for this dissociation were put to the test. The postulated association between motor neglect and extinction did not hold good, nor did the possibility that the N+ E- dissoci...
| Publicado en: | Cortex: A Journal Devoted to the Study of the Nervous System & Behavior Vol. 35; no. 3; pp. 285 - 314 |
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| Autores principales: | , , , |
| Formato: | case study research Journal Article |
| Publicado: |
Masson SPA
1999 Jun
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| Acceso en línea: | Ver este registro en EBSCOhost |
| fields | @attributes: recordID: 1 pdfLink: plink: https://search.ebscohost.com/login.aspx?direct=true&db=ccm&AN=128797494&site=ehost-live header: @attributes: shortDbName: ccm uiTerm: 128797494 longDbName: CINAHL Complete uiTag: AN controlInfo: bkinfo: dissinfo: jinfo: jid: 00109452 GMP jtl: Cortex: A Journal Devoted to the Study of the Nervous System & Behavior issn: 00109452 maglogo: N pubinfo: dt: 1999 Jun vid: 35 iid: 3 pid: 12473 pub: Masson SPA artinfo: ui: 128797494 128797494 NLM10440071 128797494 NLM10440071 128797494 ppf: 285 ppct: 29 formats: tig: atl: Neglect without extinction. aug: au: Cocchini, G Cubelli, R Della Sala, S Beschin, N affil: Psychology Dept., University of Aberdeen, UK sug: subj: Parietal Lobe Physiopathology Orientation Attention Reinforcement (Psychology) Infarction Physiopathology Dominance, Cerebral Physiology Touch Physiology Infarction Psychosocial Factors Psychomotor Performance Brain Mapping Reaction Time Physiology Male Aged Memory Human Neuropsychological Tests Sound Localization Infarction Diagnosis Visual Perception Physiology Validation Studies Comparative Studies Evaluation Research Multicenter Studies Aged: 65+ years Male ab: A patient, AB, is reported who showed clear signs of neglect but no extinction (N+ E-). Several hypotheses proposed to account for this dissociation were put to the test. The postulated association between motor neglect and extinction did not hold good, nor did the possibility that the N+ E- dissociation may be traced back to the difference in test requirements and therefore observed only in patients with object-centred neglect. Likewise, manipulating the physical features of the stimuli (relative size, exposure time, presentation synchrony) did not elicit extinction. However, when the task demands were modified by asking the patient to perform a further spatial analysis of the stimuli, rather than simply detect them, extinction emerged. Since AB performed well on several neglect tasks requiring parallel processing, while failing all tasks calling for serial processing, the hypothesis is put forward that AB's N+ E- dissociation could be interpreted within the parallel/serial distinction framework. pubtype: Academic Journal doctype: case study research Journal Article ougenre: Article language: English refInfo: holdings: @attributes: islocal: N |
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