scholarly journals Eye position influences contrast responses in V1 of alert monkey

2010 ◽  
Vol 3 (9) ◽  
pp. 698-698 ◽  
Author(s):  
A. W Przybyszewski ◽  
I. Kagan ◽  
M. D Snodderly
Keyword(s):  
Eye Position ◽  
Alert Monkey

Comparison of EOG and search coil techniques in long-term measurements of eye position in alert monkey and cat

1983 ◽  
Vol 23 (10) ◽  
pp. 1025-1030 ◽  
Author(s):  
J. Schlag ◽  
B. Merker ◽  
M. Schlag-Rey
Keyword(s):  
Eye Position ◽  
Alert Monkey ◽  
Search Coil

Visuomotor functions of central thalamus in monkey. I. Unit activity related to spontaneous eye movements

1984 ◽  
Vol 51 (6) ◽  
pp. 1149-1174 ◽  
Author(s):  
M. Schlag-Rey ◽  
J. Schlag
Keyword(s):  
Eye Movements ◽  
Lead Time ◽  
Red Light ◽  
Total Darkness ◽  
Frontal Eye Field ◽  
Eye Position ◽  
Alert Monkey ◽  
Eye Field ◽  
Directional Preference ◽  
Central Thalamus

The region in and around the thalamic internal medullary lamina (IML) in the cat recently has been shown to contain neurons active with ocular saccades and responding to visual stimuli. In the present study, single-unit microelectrode recordings were made in the corresponding thalamic region of the alert monkey in order to determine whether neurons with similar properties existed. Our objective was to specify the functional characteristics of these thalamic cells in the monkey, since 1) cell populations in the central thalamus form an important link between brain stem structures, such as superior colliculus and paramedian pontine reticular formation, and cortical areas, such as frontal eye field and inferior parietal lobule; and 2) most neurophysiological information on these structures with regard to gaze mechanisms has been obtained in primates. In this first part of the study we report observations on 164 thalamic units whose activity was related to the performance of spontaneous eye movements, head fixed. The animals had been trained on a visual discrimination task but photic stimuli were used only for calibrating the eye-position recording and for inducing small saccades and smooth pursuit. The experiments were performed in dim red light and in total darkness. Three types of units were found: 67 saccadic burst units, 58 saccade pause-rebound units, and 39 eye-position units. Sixty-two of the burst units had a directional preference. Most of the on-directions were contraversive, and it was in such units that the lead time of firing before saccades was the longest (up to at least 400 ms). Some of the burst units had a movement field, others fired more intensively and with a longer lead time, depending on the eccentricity of the eye position reached in orbit. The five units with no directional preference were the ones showing the best relation of burst duration with saccade duration. Three types of pause-rebound units were distinguished, depending on whether the saccadic pause or the postsaccadic burst was the most conspicuous event or the pause occurred after saccade offset. The three types were called, respectively, omnipausers, omnirebound cells, and late pausers. Omnipausers and omnirebound cells had no directional preference but their typical firing patterns occurred very consistently with all saccades, even less than 2 degrees. In a few units, the rebound progressively faded away in total darkness. The relation of firing rate of eye-position units with eccentricity of the eyes in orbit was analyzed. Fluctuations in time and a hysteresis effect were found to affect this relation.(ABSTRACT TRUNCATED AT 400 WORDS)

Eye position reflects the spatial coding of numbers during magnitude comparison.

2019 ◽  
Vol 45 (10) ◽  
pp. 1910-1921 ◽  
Author(s):  
Samuel Salvaggio ◽  
Nicolas Masson ◽  
Michael Andres
Keyword(s):  
Eye Position ◽  
Spatial Coding ◽  
Magnitude Comparison

Crosstalk Minimization Method for Eye-tracking-based 3D Display

2020 ◽  
Author(s):  
Seok Lee ◽  
Juyong Park ◽  
Dongkyung Nam
Keyword(s):  
Image Processing ◽  
Eye Tracking ◽  
Three Dimensional ◽  
Processing Method ◽  
Eye Position ◽  
Relative Location ◽  
3D Display ◽  
Minimization Method ◽  
3D Crosstalk ◽  
Pixel Value

In this article, the authors present an image processing method to reduce three-dimensional (3D) crosstalk for eye-tracking-based 3D display. Specifically, they considered 3D pixel crosstalk and offset crosstalk and applied different approaches based on its characteristics. For 3D pixel crosstalk which depends on the viewer’s relative location, they proposed output pixel value weighting scheme based on viewer’s eye position, and for offset crosstalk they subtracted luminance of crosstalk components according to the measured display crosstalk level in advance. By simulations and experiments using the 3D display prototypes, the authors evaluated the effectiveness of proposed method.

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