• Nystagmus, slow saccades, and abnormal fundoscopic examination findings are present in varying degrees. (medscape.com)
  • There is considerable variability in fixations (the point at which a saccade jumps to) and saccades between readers, and even for the same person reading a single passage of text. (wikipedia.org)
  • From this table, it is immediately apparent that while the values presented in the table are quite representative of the different tasks, they show a range of average fixation durations and for each of the tasks there is considerable variability both in terms of fixation durations and saccade lengths. (scholarpedia.org)
  • To characterize the phenotypic variability of spastic paraplegia type 7 in a single family. (mdsabstracts.org)
  • This case demonstrates intrafamilial phenotypic variability in time of onset and severity of disease. (mdsabstracts.org)
  • A great paper HERE that uses genomic analysis to understand the large phenotypic variability observed in 160 breeds of modern dogs. (datadeluge.com)
  • When reading, the eye moves continuously along a line of text, but makes short rapid movements (saccades) intermingled with short stops (fixations). (wikipedia.org)
  • Saccades separate fixations, the periods of apparent eye immobility in which visual information is acquired and processed. (datadeluge.com)
  • Under this assumption, the psychophysical data on perisaccadic compression can be appreciated intuitively by imagining that, around the time of a saccade, the brain confounds nearby oculomotor and sensory signals while attempting to localize the position of objects in visual space. (jneurosci.org)
  • The slowing of the horizontal saccades, an oculomotor finding, is often the sole neurologic manifestation. (medscape.com)
  • During viewing of a stationary scene, rapid gaze shifts, known as saccades, occur every few hundreds of milliseconds. (datadeluge.com)
  • Abnormally increased intertrial variability was observed for many vergence parameters (gain, duration, and speed) for the subjects with vergence disorders. (arvojournals.org)
  • We will review the literature on these findings which are 'beyond HINTS' and include saccades/ocular lateropulsion, smooth pursuit, and provocative maneuvers including head-shaking and positional testing (not part of the HINTS exam). (bvsalud.org)
  • During the actual eye movement (or saccade ), vision is suppressed and new information is acquired only during the fixation (the period of time when the eyes remain relatively still). (scholarpedia.org)
  • The frontal eye fields (FEFs) participate in both working memory and sensorimotor transformations for saccades, but their role in integrating these functions through time remains unclear. (eneuro.org)
  • Here, we tracked FEF spatial codes through time using a novel analytic method applied to the classic memory-delay saccade task. (eneuro.org)
  • Intertrial variability is the major marker of vergence disorders. (arvojournals.org)
  • 2019), suggesting that increased variability of responses (i.e., where exactly the correct response panel is hit on a touch screen) can be influenced by the high cognitive load in a dual-task paradigm. (sfu.ca)
  • Under such conditions, there is a systematic misperception of the probes toward the saccade end point. (jneurosci.org)
  • Specifically, we propose that perisaccadic compression is determined by the distance between the probe and saccade end point on a map that has a logarithmic representation of visual space, similar to those found in numerous cortical and subcortical visual structures. (jneurosci.org)
  • Autonomic failure is often seen, especially if sensitive methods of detection such as heart rate variability analysis are used. (medscape.com)
  • Here, we show that the magnitude of perceptual compression for a wide variety of probe stimuli and saccade amplitudes is quantitatively predicted by a simple heuristic model based on the geometry of retinotopic representations in the primate brain. (jneurosci.org)
  • Motor Systems NeuroReport NeuroReport 10, 2665±2670 (1999) THE gain of visually triggered saccades depends on orbital position. (studyres.com)
  • We observed a topography of saccade direction and amplitude consistent with findings in macaques and humans: small saccades in ventrolateral FEF and large saccades combined with contralateral neck and shoulder movements encoded in dorsomedial FEF. (jneurosci.org)
  • Centrifugal saccades have smaller gains and are slower than centripetal saccades elicited by the same target amplitude. (studyres.com)
  • tion amplitude of 25% for BOLD data, and a significantly lower variability of 21% for perfusion data. (nih.gov)
  • The brain map of gait variability in aging, cognitive impairment and dementia-A systematic review. (nih.gov)
  • Internally triggered saccades probably depend more on direct pathways from the frontal or supplementary eye ®elds to the brain stem [6,7,8]. (studyres.com)
  • The CFN receives input from the oculomotor vermis and projects to the premotor network in the paramedian pontine reticular formation, which is common to all saccades, i.e. the brain stem burst generator. (studyres.com)
  • Currently no data are available from normal subjects which indicate if position dependency is the same for externally and internally triggered saccades. (studyres.com)
  • Compensatory Saccades Are Associated With Physical Performance in Older Adults: Data From the Baltimore Longitudinal Study of Aging. (nih.gov)
  • Lesions of these areas cause an abnormally large difference in the gains of centrifugal and centripetal saccades [4,5]. (studyres.com)
  • Orbital position in¯uenced externally triggered gap saccades but not the gain or peak eye velocity of scanning or memory saccades. (studyres.com)
  • Instead our results are consistent with the view that cortical output re¯ects the differences evident in the gain of visually triggered centrifugal and centripetal saccades. (studyres.com)
  • Retinotopic Introduction The gain of visually triggered saccades partly depends on the position of the eye at the start of the saccade. (studyres.com)
  • An incomplete compensation for this force could explain the gain and velocity differences between centrifugal and centripetal saccades. (studyres.com)
  • 1993) course of closed and up-- request solving non-native-speakers for gain of box spp. (ligaya-technologies.com)
  • 1993) certificate of test species water in a index contact and research of the documents used. (ligaya-technologies.com)