Conclusion

métriques et les modifications de latence observées après inactivation fastigiale. Elle
permettra de définir si cette latence commence à partir du moment où la cible est présentée
ou à partir de l'instant où la décision de se déplacer est prise.

L'ensemble de notre travail supporte l'hypothèse d'une intervention des territoires médio-postérieurs du cervelet dans les processus préparatoires au mouvement d'orientation, c'est- à-dire dans les processus qui conduisent à la spécification des paramètres spatiaux et au déclenchement du mouvement. Il nous paraît néanmoins important de déterminer plus précisément la (ou les) fenêtre(s) temporelle(s) au cours de laquelle (desquelles) ces régions interviennent dans la transformation visuomotrice. L'effet de la microstimulation électrique transitoire et infraliminaire de la voie cérébelleuse cortico-fastigiale à différents moments de la préparation du mouvement d'orientation et la comparaison du déficit obtenu avec celui qui est observé après injection de muscimol contribuera à mieux définir ce dernier et aussi à préciser la contribution du cervelet médio-postérieur au contrôle de l'orientation du regard. L'enjeu de cette expérience est considérable car il pourra guider l'exploration électrophysiologique de cette région, et surtout, il permettra de tester dans quelle mesure le cervelet médio-postérieur participe aux processus qui conduisent à l'élaboration de représentations spatiales de l'expérience sensorimotrice.
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Les résultats rapportés dans cette thèse ont fait l'objet de publications sous la forme de posters, de communications orales et d'articles.

# RESUMES

**Goffart L. et Pélisson D.**

*Gaze saccades during functional inactivation of the fastigial nucleus in the cat.*

Poster présenté au 32ème Congrès de l' Union Internationale des Sciences Physiologiques, Glasgow (Ecosse), août 1993.

**Pélisson D. et Goffart L.**

*Implication of the fastigial nucleus in target localization and execution of orienting gaze shifts in the cat.*

Poster présenté au Congrès "Four decades of seminal eye movement research: A tribute to D.A. Robinson", Eibsee (Allemagne), septembre 1993.

**Goffart L. et Pélisson D.**

*Contribution du cervelet à la structuration motrice de l'espace visuel.*

Poster présenté lors des 6èmes Séminaires Ophtalmologiques IPSEN, Abbaye de Royaumont (France), mars 1994.

**Pélisson D. et Goffart L.**

*Rôle du cervelet dans le codage spatial de cibles visuelles.*

Communication présentée par le Dr D. Pélisson aux 7èmes Journées Neurosciences et Sciences de l'Ingénieur, Chamonix (France), mai 1994.

**Goffart L. et Pélisson D.**

*Cerebellar contribution to localization of the goal for orienting gaze shifts in the cat.*

Communication présentée par le Dr D. Pélisson au 17ème Congrès annuel de l' Association des Neurosciences Européennes, Vienne (Autriche), septembre 1994.
**Goffart L. et Pélisson D.**

*Altered visuo-motor mapping after fastigial nucleus inhibition in the alert cat.*

Communication donnée lors du 24ème Congrès annuel de la Société des Neurosciences, Miami Beach (U.S.A.), novembre 1994.

**Goffart L. et Pélisson D.**

*Cerebellar contribution to visuo-spatial transformations for orienting movements.*

Poster présenté lors du 5ème Meeting Annuel de la Société Neural Control of Movement, Key West (U.S.A.), avril 1995.

**Goffart L. et Pélisson D.**

*Cervelet et transformations visuo-spatiales pour l'orientation du regard*

Poster présenté lors du 2ème Colloque de la Société Française des Neurosciences, Lyon (France), mai 1995.

**Pélisson D. et Goffart L.**

*Orienting movements towards visual targets following inactivation of the medial cerebellar nucleus in the cat.*

Poster présenté lors d'un atelier satellite au 17ème Congrès annuel de l'Association des Neurosciences Européennes, Amsterdam (Pays-Bas), septembre 1995.

**Pélisson D. and Goffart L.**

*Visuo-motor transformation deficits after inactivation of the caudal fastigial nucleus in the head-free cat.*

Communication donnée par le Dr D. Pélisson lors du 25ème Congrès annuel de la Société des Neurosciences, San Diego (U.S.A.), novembre 1995.

## ARTICLES

**Goffart L. et Pélisson D.**

*Implication of the fastigial nucleus in target localization and execution of orienting gaze shifts in the cat.*

Dans "Contemporary ocular motor and vestibular research: A tribute to David A. Robinson" A.F. Fuchs, T. Brandt, U. Büttner et D.Zee (Eds) Thieme Verlag, Stuttgart, pp 282-284, 1994.
**Goffart L. et Pélisson D.**

*Cerebellar contribution to spatial encoding of orienting gaze shifts in the head-free cat.*

Journal of Neurophysiology, 72: 2547-2550, 1994.

**Goffart L. and Pélisson D.**

*Inactivation of the rostral fastigial nucleus differently impairs eye and head components of gaze shifts in the cat.*

Journal of Neurophysiology, soumis.

**Goffart L. and Pélisson D.**

*Changes in initiation of orienting gaze shifts after muscimol inactivation of the caudal fastigial nucleus in the cat.*

En preparation

**Goffart L. and Pélisson D.**

*Deficits in orienting gaze shifts after muscimol inactivation of the caudal fastigial nucleus in the cat*

*I. Spatial aspects.*

En preparation

**Goffart L. and Pélisson D.**

*Deficits in orienting gaze shifts after muscimol inactivation of the caudal fastigial nucleus in the cat.*

*II. Eye-head coordination and movement dynamics.*

En preparation.