Activation of superior colliculus neurons and motor responses after electrical stimulation of the inferior colliculus

1970 ◽  
Vol 28 (3) ◽  
pp. 384-392 ◽  
Author(s):  
Josef Syka ◽  
Max Straschill
Keyword(s):  
Electrical Stimulation ◽  
Superior Colliculus ◽  
Inferior Colliculus ◽  
Motor Responses ◽  
Superior Colliculus Neurons ◽  
Stimulation Of

The distribution of fos immunoreactivity in rat brain following freezing and escape responses elicited by electrical stimulation of the inferior colliculus

2002 ◽  
Vol 950 (1-2) ◽  
pp. 186-194 ◽  
Author(s):  
Marisol R Lamprea ◽  
Fernando P Cardenas ◽  
Daniel Machado Vianna ◽  
Vanessa M Castilho ◽  
Sara Eugenia Cruz-Morales ◽  
...  
Keyword(s):  
Electrical Stimulation ◽  
Rat Brain ◽  
Inferior Colliculus ◽  
Escape Responses ◽  
Stimulation Of

New Mechanism That Accounts for Position Sensitivity of Saccades Evoked in Response to Stimulation of Superior Colliculus

1998 ◽  
Vol 80 (6) ◽  
pp. 3373-3379 ◽  
Author(s):  
A. K. Moschovakis ◽  
Y. Dalezios ◽  
J. Petit ◽  
A. A. Grantyn
Keyword(s):  
Electrical Stimulation ◽  
Eye Movements ◽  
Superior Colliculus ◽  
Short Duration ◽  
High Frequency ◽  
Initial Position ◽  
Characteristic Vector ◽  
Extraocular Motoneurons ◽  
Position Sensitivity ◽  
Stimulation Of

Moschovakis, A. K., 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. 80: 3373–3379, 1998. Electrical stimulation of the feline superior colliculus (SC) is known to evoke saccades whose size depends on the site stimulated (the “characteristic vector” of evoked saccades) and the initial position of the eyes. Similar stimuli were recently shown to produce slow drifts that are presumably caused by relatively direct projections of the SC onto extraocular motoneurons. Both slow and fast evoked eye movements are similarly affected by the initial position of the eyes, despite their dissimilar metrics, kinematics, and anatomic substrates. We tested the hypothesis that the position sensitivity of evoked saccades is due to the superposition of largely position-invariant saccades and position-dependent slow drifts. We show that such a mechanism can account for the fact that the position sensitivity of evoked saccades increases together with the size of their characteristic vector. Consistent with it, the position sensitivity of saccades drops considerably when the contribution of slow drifts is minimal as, for example, when there is no overlap between evoked saccades and short-duration trains of high-frequency stimuli.

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