Contribution of the Monkey Frontal Eye Field to Covert Visual Attention. - Archive ouverte HAL Accéder directement au contenu
Article Dans Une Revue Journal of Neuroscience Année : 2006

Contribution of the Monkey Frontal Eye Field to Covert Visual Attention.

Claire Wardak
Guilhem Ibos
Etienne Olivier
  • Fonction : Auteur

Résumé

The frontal eye field (FEF) has long been regarded as a cortical area critically involved in the execution of voluntary saccadic eye movements. However, recent studies have suggested that the FEF may also play a role in orienting attention. To address this issue, we reversibly inactivated the FEF using multiple microinjections of muscimol, a GABA A agonist, in two macaque monkeys performing visually guided saccades to a single target. The effects of FEF inactivation were also studied in a covert visual search task that required monkeys to search for a target presented among several distractors without making any eye movements. As expected, inactivating the FEF caused spatially selective deficits in executing visually guided saccades, but it also altered the ability to detect a visual target presented among distractors when no eye movements were permitted. These results allow us to conclude definitively to an involvement of the FEF in both oculomotor and attentional functions. Comparison of the present results with a similar experiment conducted in the lateral intraparietal cortex area revealed qualitatively different deficits, suggesting that the two areas may make distinct contributions to selective attention processes.

Domaines

Neurosciences
Fichier principal
Vignette du fichier
2006 Wardak et al, J Neuro.pdf (873.64 Ko) Télécharger le fichier
Origine : Fichiers éditeurs autorisés sur une archive ouverte

Dates et versions

hal-03082383 , version 1 (18-12-2020)

Identifiants

Citer

Claire Wardak, Guilhem Ibos, Jean-René Duhamel, Etienne Olivier. Contribution of the Monkey Frontal Eye Field to Covert Visual Attention.. Journal of Neuroscience, 2006, 26, pp.4228 - 4235. ⟨10.1523/jneurosci.3336-05.2006⟩. ⟨hal-03082383⟩
25 Consultations
79 Téléchargements

Altmetric

Partager

Gmail Facebook X LinkedIn More