| HOME | HELP | FEEDBACK | SUBSCRIPTIONS | ARCHIVE | SEARCH | TABLE OF CONTENTS |
|
|
|
|||||||
|
|||||||||
Journal of Neurophysiology, Vol 55, Issue 1 97-112, Copyright © 1986 by APS
ARTICLES |
J. T. McIlwain
Electrical stimulation was carried out in the intermediate and deep gray layers of the superior colliculus in alert cats. The heads of the animals were fixed, and their eye movements were recorded with the scleral search coil method. Stimulation in the anterior two-thirds of the colliculus with long-duration pulse trains produced multiple saccades, as in the primate (45, 51), but their directions and amplitudes were influenced significantly by the initial position of the eye. Stimulation in the posterior part of the colliculus evoked saccades that appeared to be "goal-directed," whereas stimulation at the extreme caudal edge of the colliculus yielded centering saccades. These observations confirm previous reports of Roucoux and Crommelinck (48) and Guitton et al. (24). Saccades evoked during bilateral simultaneous stimulation of the superior colliculi were also dependent on the initial position of the eye. At certain relative intensities of stimulation on the two sides, saccades failed to occur when the eye was within a particular part of the oculomotor range. When the eye was outside this region, the same stimuli triggered an eye movement that drove the eye toward the zone of saccade failure. These findings indicate that saccadic commands resulting from focal collicular stimulation in the cat can be modified by information about current eye position. It is not certain where in the brain this occurs or by what neural mechanisms, but a local feedback model of the saccadic control system (46) can account for the main observations. The functional significance of these findings depends in large measure on the degree to which focal collicular stimulation reproduces naturally occurring patterns of neural activity.
This article has been cited by other articles:
|
|
 |
|
  M. E. Hemelt and A. Keller Superior Colliculus Control of Vibrissa Movements J Neurophysiol, September 1, 2008; 100(3): 1245 - 1254. [Abstract] [Full Text] [PDF]
|
|
|
|
|
|
M. Takahashi, Y. Sugiuchi, and Y. Shinoda Commissural Mirror-Symmetric Excitation and Reciprocal Inhibition Between the Two Superior Colliculi and Their Roles in Vertical and Horizontal Eye Movements J Neurophysiol, November 1, 2007; 98(5): 2664 - 2682. [Abstract] [Full Text] [PDF]
|
|
|
|
|
|
Y. Izawa, Y. Sugiuchi, and Y. Shinoda Neural Organization of the Pathways From the Superior Colliculus to Trochlear Motoneurons J Neurophysiol, May 1, 2007; 97(5): 3696 - 3712. [Abstract] [Full Text] [PDF]
|
|
|
|
|
|
K. Saitoh, A. Menard, and S. Grillner Tectal Control of Locomotion, Steering, and Eye Movements in Lamprey J Neurophysiol, April 1, 2007; 97(4): 3093 - 3108. [Abstract] [Full Text] [PDF]
|
|
|
|
|
|
M. Campos, A. Cherian, and M. A. Segraves Effects of Eye Position upon Activity of Neurons in Macaque Superior Colliculus J Neurophysiol, January 1, 2006; 95(1): 505 - 526. [Abstract] [Full Text] [PDF]
|
|
|
|
|
|
M. Takahashi, Y. Sugiuchi, Y. Izawa, and Y. Shinoda Commissural Excitation and Inhibition by the Superior Colliculus in Tectoreticular Neurons Projecting to Omnipause Neuron and Inhibitory Burst Neuron Regions J Neurophysiol, September 1, 2005; 94(3): 1707 - 1726. [Abstract] [Full Text] [PDF]
|
|
|
|
|
|
Y. Sugiuchi, Y. Izawa, M. Takahashi, J. Na, and Y. Shinoda Physiological Characterization of Synaptic Inputs to Inhibitory Burst Neurons From the Rostral and Caudal Superior Colliculus J Neurophysiol, February 1, 2005; 93(2): 697 - 712. [Abstract] [Full Text] [PDF]
|
|
|
|
 |
|
 G. A. Calvert Crossmodal Processing in the Human Brain: Insights from Functional Neuroimaging Studies Cereb Cortex, December 1, 2001; 11(12): 1110 - 1123. [Abstract] [Full Text] [PDF]
|
|
|
|
|
|
Y. Izawa, Y. Sugiuchi, and Y. Shinoda Neural Organization From the Superior Colliculus to Motoneurons in the Horizontal Oculomotor System of the Cat J Neurophysiol, June 1, 1999; 81(6): 2597 - 2611. [Abstract] [Full Text] [PDF]
|
|
|
|
|
|
A. K. Moschovakis, Y. Dalezios, J. Petit, and A. A. Grantyn New Mechanism That Accounts for Position Sensitivity of Saccades Evoked in Response to Stimulation of Superior Colliculus J Neurophysiol, December 1, 1998; 80(6): 3373 - 3379. [Abstract] [Full Text] [PDF]
|
|
|
|
 |
|
 A. K. Moschovakis, T. Kitama, Y. Dalezios, J. Petit, A. M. Brandi, and A. A. Grantyn An Anatomical Substrate for the Spatiotemporal Transformation J. Neurosci., December 1, 1998; 18(23): 10219 - 10229. [Abstract] [Full Text] [PDF]
|
|
|
|
|
|
P. Thier and R. A. Andersen Electrical Microstimulation Distinguishes Distinct Saccade-Related Areas in the Posterior Parietal Cortex J Neurophysiol, October 1, 1998; 80(4): 1713 - 1735. [Abstract] [Full Text] [PDF]
|
|
|
|
|
|
M. Pare and D. Guitton Brain Stem Omnipause Neurons and the Control of CombinedEye-Head Gaze Saccades in the Alert Cat J Neurophysiol, June 1, 1998; 79(6): 3060 - 3076. [Abstract] [Full Text] [PDF]
|
|
|
|
 |
|
 E Bizzi, F. Mussa-Ivaldi, and S Giszter Computations underlying the execution of movement: a biological perspective Science, July 19, 1991; 253(5017): 287 - 291. [Abstract] [PDF]
|
|
| HOME | HELP | FEEDBACK | SUBSCRIPTIONS | ARCHIVE | SEARCH | TABLE OF CONTENTS |
| Visit Other APS Journals Online |
