Frontal and parietal contributions to visual perception in humans
type: Distribution
access URL: https://theses.hal.science/tel-00989767
format: HTML
issued: 2026-05-05T11:31:52.479002
modified: 2026-05-05T11:31:52.460374

test_moissonnage_selune
type: Agent

Frontal and parietal contributions to visual perception in humans
type: Dataset
contact point: Organization
  fn: CCSD
keyword: theses
keyword: reseaux-frontoparietaux
keyword: sdvneulife-sciences-q-bioneurons-and-cognition-q-bionc
keyword: infoeu-reposemanticsdoctoralthesis
keyword: perception
keyword: visual-performance
keyword: stimulation-magnetique-transcranienne
keyword: attention
keyword: frontal-and-parietal-areas
keyword: conscience
keyword: oscillations
landing page: https://theses.hal.science/tel-00989767
description: Frontal and parietal areas have been shown to subtend different cognitive processes such as attentional orienting, decision making and access to consciousness, with bearing on visual performance. In spite of prior evidence supporting an implication of those regions in visual cognition, their contributions to the processing of low-contrast unmasked stimuli and the characteristic spatiotemporal activity patterns underlying them remain to be fully explored and causation is lacking. We here addressed a thorough exploration of such contributions in humans, with an emphasis on the dynamics of neural activity and visual performance enhancements as probed by patterns of noninvasive manipulation of local brain oscillatory activity. To this end, we tested in healthy participants the effects of either single pulses or short bursts of active vs. sham transcranial magnetic stimulation (TMS), delivered to the frontal eye field (FEF) and the intraparietal sulcus (IPS) prior to the presentation of a lateralized low-contrast near-threshold Gabor stimulus, on the visual discrimination and conscious detection of such stimulus. Our findings contribute to better substantiate the oscillatory basis of visual cognition and its associated behaviors and to set the stage for the development of novel therapies based on noninvasive manipulation of dysfunctional brain oscillatory activity.
identifier: NNT: 2014PA066027
issued: 2026-05-05T11:31:52.473316
language: en
modified: 2026-05-05T11:31:52.473321