Related Experiment Videos
Monocular eye movement in the cat: its corticotectal pathway
Y Tamai1, M Nakai, E Miyashita
1Department of Physiology, Wakayama Medical College, Japan.
The Japanese Journal of Physiology
|January 1, 1988
Summary
Researchers traced the corticotectal pathway in cats, identifying a direct connection from the coronal sulcus (CORo) to the superior colliculus (SC). This pathway is crucial for controlling eye movements.
Area of Science:
- Neuroscience
- Ophthalmology
- Animal Models
Background:
- The corticotectal pathway facilitates visual-motor integration.
- Understanding this pathway is key to deciphering eye movement control.
Purpose of the Study:
- To investigate the corticotectal pathway originating from the coronal sulcus (CORo) in cats.
- To determine the functional connection between the CORo and the superior colliculus (SC) for eye movements.
Main Methods:
- Electrophysiological recordings to identify neuronal activity.
- Anatomical tracing using horseradish peroxidase (HPP) injection in the superior colliculus (SC).
Main Results:
- Neurons in the cat's CORo were activated antidromically by stimulating the deep layer of the SC.
- Horseradish peroxidase (HPP) injections in the SC revealed labeled cells within the CORo.
Conclusions:
- The study confirms a direct anatomical and functional corticotectal pathway from the CORo to the SC.
- This pathway plays a role in mediating contralateral eye movements originating from the cat's coronal sulcus.