scholarly journals Contributions of gaze-centered and object-centered coding in a double-step saccade task

2016 ◽  
Vol 16 (14) ◽  
pp. 12 ◽  
Author(s):  
Anouk J. de Brouwer ◽  
W. Pieter Medendorp ◽  
Jeroen B. J. Smeets
Keyword(s):  
Double Step ◽  
Saccade Task

scholarly journals Oscillatory Activity in Human Parietal and Occipital Cortex Shows Hemispheric Lateralization and Memory Effects in a Delayed Double-Step Saccade Task

2006 ◽  
Vol 17 (10) ◽  
pp. 2364-2374 ◽  
Author(s):  
W. P. Medendorp ◽  
G. F. I. Kramer ◽  
O. Jensen ◽  
R. Oostenveld ◽  
J.-M. Schoffelen ◽  
...  
Keyword(s):  
Occipital Cortex ◽  
Memory Effects ◽  
Hemispheric Lateralization ◽  
Oscillatory Activity ◽  
Double Step ◽  
Saccade Task

scholarly journals Sounds are remapped across saccades

2019 ◽  
Author(s):  
Martin Szinte ◽  
David Aagten-Murphy ◽  
Donatas Jonikaitis ◽  
Luca Wollenberg ◽  
Heiner Deubel
Keyword(s):  
Visual Space ◽  
Double Step ◽  
Visual Objects ◽  
Object Locations ◽  
Space Constancy ◽  
Saccade Task ◽  
Saccade Trajectory

AbstractTo achieve visual space constancy, our brain remaps eye-centered projections of visual objects across saccades. Here, we measured saccade trajectory curvature following the presentation of visual, auditory, and audiovisual distractors in a double-step saccade task to investigate if this stability mechanism also accounts for localized sounds. We found that saccade trajectories systematically curved away from the position at which either a light or a sound was presented, suggesting that both modalities are represented in eye-centered oculomotor centers. Importantly, the same effect was observed when the distractor preceded the execution of the first saccade. These results suggest that oculomotor centers keep track of visual, auditory and audiovisual objects by remapping their eye-centered representations across saccades. Furthermore, they argue for the existence of a supra-modal map which keeps track of multi-sensory object locations across our movements to create an impression of space constancy.

Task-irrelevant emotional faces impair response adjustments in a double-step saccade task

2017 ◽  
Vol 32 (6) ◽  
pp. 1347-1354
Author(s):  
Zhenlan Jin ◽  
Shulin Yue ◽  
Junjun Zhang ◽  
Ling Li
Keyword(s):  
Double Step ◽  
Emotional Faces ◽  
Saccade Task ◽  
Task Irrelevant

scholarly journals Sounds are remapped across saccades

2020 ◽  
Vol 10 (1) ◽  
Author(s):  
Martin Szinte ◽  
David Aagten-Murphy ◽  
Donatas Jonikaitis ◽  
Luca Wollenberg ◽  
Heiner Deubel
Keyword(s):  
Visual Space ◽  
Double Step ◽  
Visual Objects ◽  
Object Locations ◽  
Space Constancy ◽  
Saccade Task ◽  
Saccade Trajectory

AbstractTo achieve visual space constancy, our brain remaps eye-centered projections of visual objects across saccades. Here, we measured saccade trajectory curvature following the presentation of visual, auditory, and audiovisual distractors in a double-step saccade task to investigate if this stability mechanism also accounts for localized sounds. We found that saccade trajectories systematically curved away from the position at which either a light or a sound was presented, suggesting that both modalities are represented in eye-centered oculomotor centers. Importantly, the same effect was observed when the distractor preceded the execution of the first saccade. These results suggest that oculomotor centers keep track of visual, auditory and audiovisual objects by remapping their eye-centered representations across saccades. Furthermore, they argue for the existence of a supra-modal map which keeps track of multi-sensory object locations across our movements to create an impression of space constancy.

Non-Cottrell Behavior of the Dopamine Redox Reaction Observed on the Carbon Fibre Microelectrode by the Double-Step Voltcoulometry

2004 ◽  
Vol 69 (2) ◽  
pp. 419-425 ◽  
Author(s):  
Katarína Gmucová ◽  
Jozef Orlický ◽  
Juraj Pavlásek
Keyword(s):  
Carbon Fibre ◽  
Redox Reaction ◽  
Measured Data ◽  
The Other ◽  
Diffusion Current ◽  
Double Step ◽  
Dopamine Concentration ◽  
Living Body ◽  
Carbon Fibre Microelectrode ◽  
Experimental Errors

The redox reaction of the neurotransmitter dopamine at the carbon fibre microelectrode was studied by several electrochemical methods. It was found that under conditions usual in a living body, the diffusion current fullfils, within experimental errors, the behavior theoretically predicted by the Cottrell equation. Nevertheless, attention should be paid to the fact that unsupported or weakly supported conditions give rise to a non-Cottrell response of diffusion current. Moreover, similar changes were observed if the dopamine concentration was either lower such as several units of μmol l-1, or about 100 μmol l-1 or higher. The non-Cottrell behavior of diffusion current involves the nonlinearity of the dopamine calibration curve obtained by pulse techniques. The present work is aimed at pointing out that such behavior of the measured data could lead to misinterpretation of the obtained dopamine concentration. Similar features could be also achieved for the other catecholamines.

scholarly journals Flexible planning of corrective responses for double-step reduction in the number of potential targets

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Ryoji Onagawa ◽  
Kazutoshi Kudo
Keyword(s):  
Control System ◽  
Weighted Average ◽  
Double Step ◽  
Average Behavior ◽  
Potential Target ◽  
Flexible Planning ◽  
Corrective Response

AbstractHumans are often required to plan/execute movements in the presence of multiple motor targets simultaneously. Under such situations, it is widely confirmed that humans frequently initiate movements towards the weighted average direction of distinct motor plans toward each potential target. However, in situations where the potential targets change in a step-by-step manner, the strategy to proceed towards the weighted average direction at each time could be sub-optimal in light of the costs of the corrective response. Herein, we tested the sensorimotor strategy followed during a step-by-step reduction of potential goals. To test the hypothesis, we compared the corrective responses when the number of targets went from three to two, and when the number of targets went from three to one at the same time. As the results, weak corrections were confirmed when the number of targets was reduced from three to two. Moreover, the corrective responses when the number of targets went from three to two was smaller than the average behavior estimated from the corrective responses when the number of targets went from three to one at the same time. This pattern of corrective responses reflects the suppression of unnecessary corrections that generate noise and cost to the control system. These results suggest that the corrective responses are flexibly modulated depending on the necessity, and cannot be explained by weighted average behavior.

The Effect of the Thickness of the Low Temperature AlN Nucleation Layer on the Material Properties of GaN Grown on a Double-Step AlN Buffer Layer by the MOCVD Method

2015 ◽  
Vol 45 (2) ◽  
pp. 859-866 ◽  
Author(s):  
Wei-Ching Huang ◽  
Chung-Ming Chu ◽  
Chi-Feng Hsieh ◽  
Yuen-Yee Wong ◽  
Kai-wei Chen ◽  
...  
Keyword(s):  
Low Temperature ◽  
Buffer Layer ◽  
Material Properties ◽  
Double Step ◽  
Nucleation Layer ◽  
Aln Buffer

On the mechanism of appearance of double-step polarographic protein waves

1975 ◽  
Vol 2 (1) ◽  
pp. 35-42 ◽  
Author(s):  
B.A. Kuznetsov ◽  
G.P. Shumakovich
Keyword(s):  
Double Step
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