Contribution of color signals to ocular following responses

2016 ◽  
Vol 44 (8) ◽  
pp. 2600-2613
Author(s):  
Kiyoto Matsuura ◽  
Kenji Kawano ◽  
Naoko Inaba ◽  
Kenichiro Miura
Keyword(s):  
Ocular Following ◽  
Color Signals

Contribution of color signals to ocular following responses

2009 ◽  
Vol 65 ◽  
pp. S108
Author(s):  
Kiyoto Matsuura ◽  
Kenichiro Miura ◽  
Kenji Kawano
Keyword(s):  
Ocular Following ◽  
Color Signals

scholarly journals Neuronal responses in the cortical area MSTd during smooth pursuit and ocular following eye movements

2009 ◽  
Vol 10 (S1) ◽  
Author(s):  
Lukas Brostek ◽  
Seiji Ono ◽  
Michael J Mustari ◽  
Ulrich Nuding ◽  
Ulrich Büttner ◽  
...  
Keyword(s):  
Eye Movements ◽  
Smooth Pursuit ◽  
Cortical Area ◽  
Neuronal Responses ◽  
Ocular Following

scholarly journals Initial Ocular Following in Humans Depends Critically on the Fourier Components of the Motion Stimulus

2005 ◽  
Vol 1039 (1) ◽  
pp. 260-271 ◽  
Author(s):  
K J CHEN ◽  
B M SHELIGA ◽  
E J FITZGIBBON ◽  
F.A. MILES
Keyword(s):  
Motion Stimulus ◽  
Ocular Following

Fully compatible EDTV for improving both Y and color signals by using a single new subcarrier

1988 ◽  
Vol 34 (3) ◽  
pp. 469-473 ◽  
Author(s):  
T. Fukinuki ◽  
Y. Hirano ◽  
H. Yoshigi ◽  
N. Suzuki
Keyword(s):  
Color Signals

scholarly journals Effect of Vergence on Human Ocular Following Response (OFR)

2009 ◽  
Vol 102 (1) ◽  
pp. 513-522 ◽  
Author(s):  
Anand C. Joshi ◽  
Matthew J. Thurtell ◽  
Mark F. Walker ◽  
Alessandro Serra ◽  
R. John Leigh
Keyword(s):  
Visual Field ◽  
Temporal Frequency ◽  
Open Loop ◽  
Motion Processing ◽  
Sinusoidal Grating ◽  
Video Monitor ◽  
Gaze Shifts ◽  
Ocular Following ◽  
Moving Stimulus ◽  
Ocular Following Response

The human ocular following response (OFR) is a preattentive, short-latency visual-field–holding mechanism, which is enhanced if the moving stimulus is applied in the wake of a saccade. Since most natural gaze shifts incorporate both saccadic and vergence components, we asked whether the OFR was also enhanced during vergence. Ten subjects viewed vertically moving sine-wave gratings on a video monitor at 45 cm that had a temporal frequency of 16.7 Hz, contrast of 32%, and spatial frequency of 0.17, 0.27, or 0.44 cycle/deg. In Fixation/OFR experiments, subjects fixed on a white central dot on the video monitor, which disappeared at the beginning of each trial, just as the sinusoidal grating started moving up or down. We measured the change in eye position in the 70- to 150-ms open-loop interval following stimulus onset. Group mean downward responses were larger (0.14°) and made at shorter latency (85 ms) than upward responses (0.10° and 96 ms). The direction of eye drifts during control trials, when gratings remained stationary, was unrelated to the prior response. During vergence/OFR experiments, subjects switched their fixation point between the white dot at 45 cm and a red spot at 15 cm, cued by the disappearance of one target and appearance of the other. When horizontal vergence velocity exceeded 15°/s, motion of sinusoidal gratings commenced and elicited the vertical OFR. Subjects showed significantly ( P < 0.001) larger OFR when the moving stimulus was presented during convergence (group mean increase of 46%) or divergence (group mean increase of 36%) compared with following fixation. Since gaze shifts between near and far are common during natural activities, we postulate that the increase of OFR during vergence movements reflects enhancement of early cortical motion processing, which serves to stabilize the visual field as the eyes approach their new fixation point.

Short-latency ocular following of motion by monkeys during a fixation task

Neuroreport ◽  
1998 ◽  
Vol 9 (17) ◽  
pp. 3981-3987 ◽  
Author(s):  
Philip J. Benson ◽  
Kun Guo
Keyword(s):  
Short Latency ◽  
Ocular Following ◽  
Fixation Task

scholarly journals Ocular-following responses to white noise stimuli in humans reveal a novel nonlinearity that results from temporal sampling

2016 ◽  
Vol 16 (1) ◽  
pp. 8 ◽  
Author(s):  
Boris M. Sheliga ◽  
Christian Quaia ◽  
Edmond J. FitzGibbon ◽  
Bruce G. Cumming
Keyword(s):  
White Noise ◽  
Temporal Sampling ◽  
Ocular Following

scholarly journals Behavioral Receptive Field for Ocular Following in Humans: Dynamics of Spatial Summation and Center-Surround Interactions

2006 ◽  
Vol 95 (6) ◽  
pp. 3712-3726 ◽  
Author(s):  
Frédéric V. Barthélemy ◽  
Ivo Vanzetta ◽  
Guillaume S. Masson
Keyword(s):  
Visual Field ◽  
Receptive Field ◽  
Visual Motion ◽  
Neuronal Response ◽  
Spatial Summation ◽  
Visuomotor Transformations ◽  
Ocular Following ◽  
Linear Integration ◽  
Response Onset ◽  
Linear Contrast

Visual neurons integrate information over a finite part of the visual field with high selectivity. This classical receptive field is modulated by peripheral inputs that play a role in both neuronal response normalization and contextual modulations. However, the consequences of these properties for visuomotor transformations are yet incompletely understood. To explore those, we recorded short-latency ocular following responses in humans to large center-only and center-surround stimuli. We found that eye movements are triggered by a mechanism that integrates motion over a restricted portion of the visual field, the size of which depends on stimulus contrast and increases as a function of time after response onset. We also found evidence for a strong nonisodirectional center-surround organization, responsible for normalizing the central, driving input so that motor responses are set to their most linear contrast dynamics. Such response normalization is delayed about 20 ms relative to tracking onset, gradually builds up over time, and is partly tuned for surround orientation/direction. These results outline the spatiotemporal organization of a behavioral receptive field, which might reflect a linear integration among subpopulations of cortical visual motion detectors.

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