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Eye position and eye velocity integrators reside in separate brainstem nuclei.

Opened Access Eye position and eye velocity integrators reside in separate brainstem nuclei.

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Autor: Pastor Loro, Ángel Manuel
Rodríguez de la Cruz, Rosa María
Baker, Robert
Departamento: Universidad de Sevilla. Departamento de Fisiología
Fecha: 1994
Publicado en: Proceedings of the National Academy of Sciences of the United States of America, 91 (2), 807-811.
Tipo de documento: Artículo
Resumen: Two types of central nervous system integrators are critical for oculomotor performance. The first integrates velocity commands to create position signals that hold fixation of the eye. The second stores relative velocity of the head and visual surround to stabilize gaze both during and after the occurrence of continuous self and world motion. We have used recordings from single neurons to establish that the 'position' and 'velocity' integrators for horizontal eye movement occupy adjacent, but nonoverlapping, locations in the goldfish medulla. Lidocaine inactivation of each integrator results in the eye movement deficits expected if horizontal eye position and velocity signals are processed separately. These observations also indicate that each brainstem compartment generates and stores these signals. Consequently, each integrator exhibits functional autonomy. Therefore, we propose that the intrinsic electrophysiological properties of the constituent neurons in each brainstem subnucle...
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Cita: Pastor Loro, Á.M., Rodriguez de la Cruz, R.M. y Baker, R. (1994). Eye position and eye velocity integrators reside in separate brainstem nuclei.. Proceedings of the National Academy of Sciences of the United States of America, 91 (2), 807-811.
Tamaño: 1.599Mb
Formato: PDF

URI: https://hdl.handle.net/11441/69934

DOI: 10.1073/pnas.91.2.807

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