saccadic movement


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Related to saccadic movement: antisaccade

sac·cad·ic move·ment

1. a quick rotation of the eyes from one fixation point to another as in reading;
2. the rapid correction movement of a jerky nystagmus, as in labyrinthine and optokinetic nystagmus.

sac·cad·ic move·ment

(să-kahd'ik mūv'mĕnt)
1. A quick rotation of the eyes from one fixation point to another as in reading.
2. The rapid correction movement of a jerky nystagmus, as in labyrinthine and optokinetic nystagmus.
References in periodicals archive ?
In this study, after vectoelectronystagmography, it was verified that the saccadic movement, optokinetic nystagmus and pendular tracking tests showed subtle differences among the groups of children with dyslexia and learning disorder in relation to the control group.
= saccadic movement; RE = right eye; Lat = latency; Vel = velocity; S-VEL = slow-phase velocity of nystagmus; DP = directional preponderance.
The parameters latency, velocity and accuracy of saccadic movements evaluate the efficiency of central nervous system (CNS) control over rapid eye movements [13].
In addition, we calculated the conditional probability of saccadic movements from one AOI to another.
Finally, it is noteworthy that the saccadic movements exhibited by both age groups during both tasks were consistent within-subjects.
(19,20) Additional features that may be helpful in differential diagnosis include fixation, which is abnormal in a significant proportion of PSP and MSA cases but less so in PD, (5) eyelid mobility which is abnormal in PSP but more likely to be normal in PD and MSA, (4) and the slowing of saccadic movements especially in the vertical direction which occurs most significantly in PSP.
In other words, muscle activations that occur when the eye is not fixating (e.g., performing saccadic movements) can be considered involuntary and therefore rejected.
Due to the ballistic nature of saccadic movements it is well known that visual perception during saccade does not affect saccade itself.
Impaired tracking with poor smooth pursuit and abnormal saccadic movements were observed in one study, independent of the usage of antipsychotic drugs.