scholarly journals The antisaccade task: Vector inversion contributes to a statistical summary representation of target eccentricities

2015 ◽  
Vol 15 (4) ◽  
pp. 4 ◽  
Author(s):  
Matthew Heath ◽  
Caitlin Gillen ◽  
Jeffrey Weiler
Keyword(s):  
Antisaccade Task ◽  
Summary Representation ◽  
Vector Inversion ◽  
Statistical Summary

Statistical Summary Representation: Contents and Mechanisms

2015 ◽  
Vol 23 (10) ◽  
pp. 1723
Author(s):  
Ke TONG ◽  
Wei TANG ◽  
Wenfeng CHEN ◽  
Xiaolan FU
Keyword(s):  
Summary Representation ◽  
Statistical Summary

scholarly journals Is Mean Size a Good Example of a Statistical Summary Representation? Centroid versus Mean Size Judgments

2017 ◽  
Vol 17 (10) ◽  
pp. 53
Author(s):  
Laris RodriguezCintron ◽  
Charles Wright ◽  
Charles Chubb
Keyword(s):  
Mean Size ◽  
Summary Representation ◽  
Statistical Summary

scholarly journals Incidental statistical summary representation over time

2016 ◽  
Vol 16 (3) ◽  
pp. 3 ◽  
Author(s):  
Chris Oriet ◽  
Kadie Hozempa
Keyword(s):  
Summary Representation ◽  
Over Time ◽  
Statistical Summary

Visual Versus Motor Vector Inversions in the Antisaccade Task: A Behavioral Investigation With Saccadic Adaptation

2008 ◽  
Vol 99 (5) ◽  
pp. 2708-2718 ◽  
Author(s):  
Thérèse Collins ◽  
Dorine Vergilino-Perez ◽  
Laura Delisle ◽  
Karine Doré-Mazars
Keyword(s):  
Eye Movement ◽  
Visual Target ◽  
Antisaccade Task ◽  
Saccade Amplitude ◽  
Stimulus Position ◽  
Target Vector ◽  
Saccadic Adaptation ◽  
Vector Inversion ◽  
Adaptation Field ◽  
Saccade Adaptation

In the antisaccade task, subjects must execute an eye movement away from a visual target. Correctly executing an antisaccade requires inhibiting a prosaccade toward the visual target and programming a movement to the opposite side. This movement could be based on the inversion of the visual vector, corresponding to the distance between the fixation point and the visual target, or the motor vector of the unwanted prosaccade. We dissociated the two vectors by means of saccadic adaptation. Adaptation can be observed when systematic targeting errors are caused by the displacement of the visual target during the saccade. Adaptation progressively modifies saccade amplitude (defined by the motor vector) such that it becomes appropriate to the postsaccadic stimulus position and thus different from the visual vector of the target. If antisaccade preparation depended on visual vector inversion, rightward prosaccade adaptation should not transfer to leftward antisaccades (which are based on the same visual vector) but should transfer to rightward antisaccades (which are based on a visual vector inside the adaptation field). If antisaccade preparation depended on motor vector inversion, rightward prosaccade adaptation should transfer to leftward antisaccades (which are based on the same, adapted motor vector) but should not transfer to rightward antisaccades (which are based on a nonadapted motor vector). The results are in line with the first hypothesis, showing that vector inversion precedes saccadic adaptation and suggesting that antisaccade preparation depends on the inversion of the visual target vector.

scholarly journals Behavioral response inhibition and maturation of goal representation in prefrontal cortex after puberty

2016 ◽  
Vol 113 (12) ◽  
pp. 3353-3358 ◽  
Author(s):  
Xin Zhou ◽  
Dantong Zhu ◽  
Samson G. King ◽  
Cynthia J. Lees ◽  
Allyson J. Bennett ◽  
...  
Keyword(s):  
Prefrontal Cortex ◽  
Response Inhibition ◽  
Behavioral Response ◽  
Structural Changes ◽  
Developmental Stages ◽  
Neural Mechanisms ◽  
Neuronal Responses ◽  
Antisaccade Task ◽  
Vector Inversion ◽  
Goal Representation

Executive functions including behavioral response inhibition mature after puberty, in tandem with structural changes in the prefrontal cortex. Little is known about how activity of prefrontal neurons relates to this profound cognitive development. To examine this, we tracked neuronal responses of the prefrontal cortex in monkeys as they transitioned from puberty into adulthood and compared activity at different developmental stages. Performance of the antisaccade task greatly improved in this period. Among neural mechanisms that could facilitate it, reduction of stimulus-driven activity, increased saccadic activity, or enhanced representation of the opposing goal location, only the latter was evident in adulthood. Greatly accentuated in adults, this neural correlate of vector inversion may be a prerequisite to the formation of a motor plan to look away from the stimulus. Our results suggest that the prefrontal mechanisms that underlie mature performance on the antisaccade task are more strongly associated with forming an alternative plan of action than with suppressing the neural impact of the prepotent stimulus.

scholarly journals Mean vs. range in statistical summary representation

2011 ◽  
Vol 11 (11) ◽  
pp. 1287-1287
Author(s):  
C. H. Pitts ◽  
M. Palomares
Keyword(s):  
Summary Representation ◽  
Statistical Summary
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