scholarly journals Superior colliculus inactivation biases target selection for smooth pursuit, saccades, and manual responses

2010 ◽  
Vol 8 (6) ◽  
pp. 666-666
Author(s):  
R. Krauzlis ◽  
S. Nummela
Keyword(s):  
Superior Colliculus ◽  
Smooth Pursuit ◽  
Target Selection ◽  
Manual Responses ◽  
Selection For

Coordination of Smooth Pursuit and Saccade Target Selection in Monkeys

2007 ◽  
Vol 98 (4) ◽  
pp. 2206-2214 ◽  
Author(s):  
Gilbert R. Case ◽  
Vincent P. Ferrera
Keyword(s):  
Smooth Pursuit ◽  
Target Selection ◽  
Saccade Target ◽  
Target Color ◽  
Smooth Pursuit Eye Movements ◽  
Moving Targets ◽  
Neural Signals ◽  
Pursuit Eye Movements ◽  
Selection For ◽  
Selection Signal

The coordination of saccadic and smooth pursuit eye movements in macaque monkeys was investigated using a target selection paradigm with two moving targets crossing at a center fixation point. A task in which monkeys selected a target based on its color was used to test the hypothesis that common neural signals underlie target selection for pursuit and saccades, as well as testing whether target selection signals are available to the saccade and pursuit systems simultaneously or sequentially. Several combinations of target color, speed, and direction were used. In all cases, smooth pursuit was highly selective for the rewarded target before any saccade occurred. On >80% of the trials, the saccade was directed toward the same target as both pre- and postsaccadic pursuit. The results favor a model in which a shared target selection signal is simultaneously available to both the saccade and pursuit systems, rather than a sequential model.

Target selection for predictive smooth pursuit eye movements

2004 ◽  
Vol 155 (1) ◽  
pp. 129-133 ◽  
Author(s):  
E. Poliakoff ◽  
C. J. S. Collins ◽  
G. R. Barnes
Keyword(s):  
Eye Movements ◽  
Smooth Pursuit ◽  
Target Selection ◽  
Smooth Pursuit Eye Movements ◽  
Pursuit Eye Movements ◽  
Selection For

scholarly journals Neural correlates of target selection for reaching movements in superior colliculus

2015 ◽  
Vol 113 (5) ◽  
pp. 1414-1422 ◽  
Author(s):  
Joo-Hyun Song ◽  
Robert M. McPeek
Keyword(s):  
Superior Colliculus ◽  
Target Selection ◽  
General Purpose ◽  
Delay Period ◽  
Reaching Movements ◽  
Intermediate Layers ◽  
Arm Reaching ◽  
Priority Map ◽  
Significant Difference ◽  
Selection For

We recently demonstrated that inactivation of the primate superior colliculus (SC) causes a deficit in target selection for arm-reaching movements when the reach target is located in the inactivated field (Song JH, Rafal RD, McPeek RM. Proc Natl Acad Sci USA 108: E1433–E1440, 2011). This is consistent with the notion that the SC is part of a general-purpose target selection network beyond eye movements. To understand better the role of SC activity in reach target selection, we examined how individual SC neurons in the intermediate layers discriminate a reach target from distractors. Monkeys reached to touch a color oddball target among distractors while maintaining fixation. We found that many SC neurons robustly discriminate the goal of the reaching movement before the onset of the reach even though no saccade is made. To identify these cells in the context of conventional SC cell classification schemes, we also recorded visual, delay-period, and saccade-related responses in a delayed saccade task. On average, SC cells that discriminated the reach target from distractors showed significantly higher visual and delay-period activity than nondiscriminating cells, but there was no significant difference in saccade-related activity. Whereas a majority of SC neurons that discriminated the reach target showed significant delay-period activity, all nondiscriminating cells lacked such activity. We also found that some cells without delay-period activity did discriminate the reach target from distractors. We conclude that the majority of intermediate-layer SC cells discriminate a reach target from distractors, consistent with the idea that the SC contains a priority map used for effector-independent target selection.

Track Segment Association in Target Selection for Interdiction Using a Single Passive Sensor

2021 ◽  
pp. 1-1
Author(s):  
K. Yang ◽  
M. Danino ◽  
Y. Bar-Shalom ◽  
D. Belfadel ◽  
B. Milgrom ◽  
...  
Keyword(s):  
Target Selection ◽  
Track Segment ◽  
Passive Sensor ◽  
Selection For
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