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We recorded performance and ocular behavior of four PCA patients and four age\u2010matched controls in visual search and counting tasks. We measured the percentage of targets detected and the mean detection time in a \u201cpop\u2010out\u201d search. We also compared counting ability when a set of dots is presented briefly (in healthy individuals, the automatic deployment of attention over space allows a fast estimation of quantity) or for unlimited duration (favoring sequential counting, hence spatiotemporal integration). All patients showed reduced deployment of attention over space (simultanagnosia), resulting in increased visual search times and underestimations of the number of briefly presented dots. Only two patients showed ocular revisiting behavior that caused frequent omissions in visual search and overestimations of the number of dots presented for unlimited duration. The impairment to deploy attention is considered here as a bilateral covert attention deficit. Disorganized ocular exploration appears to be independent and is hypothesized to result from processes maintaining a salience map over time (spatial working memory) and especially across saccades.<\/jats:p>","DOI":"10.1111\/nyas.12731","type":"journal-article","created":{"date-parts":[[2015,2,23]],"date-time":"2015-02-23T20:55:43Z","timestamp":1424724943000},"page":"165-175","source":"Crossref","is-referenced-by-count":19,"title":["Combination of attentional and spatial working memory deficits in B\u00e1lint\u2013Holmes syndrome"],"prefix":"10.1111","volume":"1339","author":[{"given":"Laure","family":"Pisella","sequence":"first","affiliation":[{"name":"Lyon Neuroscience Research Center (CRNL) ImpAct INSERM U1028 CNRS UMR5292 Lyon University and Neurological Hospital L. 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