{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,5,29]],"date-time":"2026-05-29T10:44:15Z","timestamp":1780051455157,"version":"3.53.1"},"reference-count":39,"publisher":"FapUNIFESP (SciELO)","issue":"2b","content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Arq. Neuro-Psiquiatr."],"published-print":{"date-parts":[[2011]]},"abstract":"<jats:p>This study aimed to elucidate cortical mechanisms involved in anticipatory actions when 23 healthy right-handed subjects had to catch a free falling object through quantitative electroencephalogram (qEEG). For this reason, we used coherence that represents a measurement of linear covariation between two signals in the frequency domain. In addition, we investigated gamma-band (30-100 Hz) activity that is related to cognitive and somatosensory processes. We hypothesized that gamma coherence will be increase in both parietal and occipital areas during moment after ball drop, due to their involvement in manipulation of objects, visuospatial processing, visual perception, stimuli identification and attention processes. We confirmed our hypothesis, an increase in gamma coherence on P3-P4 (t= -2.15; p=0.033) and PZ-OZ (t= -2.16; p=0.034) electrode pairs was verified for a paired t-test. We conclude that to execute tasks involving anticipatory movements (feedforward mechanisms), like our own task, probably, there is no need of a strong participation of visual areas in the process of information organization to manipulate objects and to process visuospatial information regarding the contact hand-object.<\/jats:p>","DOI":"10.1590\/s0004-282x2011000300007","type":"journal-article","created":{"date-parts":[[2011,5,26]],"date-time":"2011-05-26T11:53:45Z","timestamp":1306410825000},"page":"304-309","source":"Crossref","is-referenced-by-count":4,"title":["Gamma band oscillations in parietooccipital areas during performance of a sensorimotor integration task: a qEEG coherence study"],"prefix":"10.1590","volume":"69","author":[{"given":"S","family":"Teixeira","sequence":"first","affiliation":[{"name":"Federal University of Rio de Janeiro, 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Brazil"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"H","family":"Budde","sequence":"additional","affiliation":[{"name":"Humboldt Universit\u00e4t zu Berlin, Germany"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"R","family":"Anghinah","sequence":"additional","affiliation":[{"name":"University of S\u00e3o Paulo Medical School, Brazil"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"L F H","family":"Basile","sequence":"additional","affiliation":[{"name":"University of S\u00e3o Paulo Medical School, Brazil; UMESP, Brazil"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"M","family":"Cagy","sequence":"additional","affiliation":[{"name":"Federal Fluminense University, Brazil"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"R","family":"Piedade","sequence":"additional","affiliation":[{"name":"Federal University of Rio de Janeiro, 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