Visually Guided, Aimed Movements Are Unaffected by Stimulus- Response Uncertainty

2004 ◽  
Author(s):  
Shane A. Belovsky ◽  
Charles E. Wright ◽  
Valerie F. Marino ◽  
Charles Chubb
Keyword(s):  
Visually Guided ◽  
Response Uncertainty ◽  
Stimulus Response

Visually guided, aimed movements can be unaffected by stimulus–response uncertainty

2007 ◽  
Vol 179 (3) ◽  
pp. 475-496 ◽  
Author(s):  
Charles E. Wright ◽  
Valerie F. Marino ◽  
Shane A. Belovsky ◽  
Charles Chubb
Keyword(s):  
Visually Guided ◽  
Response Uncertainty ◽  
Stimulus Response

Alcohol Effects on Information Processing Time with an Overlearned Task1

1973 ◽  
Vol 37 (3) ◽  
pp. 835-839 ◽  
Author(s):  
Herbert Moskowitz ◽  
Marcelline Burns
Keyword(s):  
Information Processing ◽  
Processing Time ◽  
Response Uncertainty ◽  
Response Latencies ◽  
Stimulus Response ◽  
Alcohol Impairment ◽  
Alcohol Effects ◽  
Alcohol Treatments

Response latencies in naming visually displayed numbers were measured for 20 Ss under control and alcohol treatments. The size of the stimulus pool was varied by sets of trials to produce stimulus-response uncertainty in the range 0 to 5 bits. Response latencies were a function of the amount of uncertainty, but alcohol impairment was not.

Smooth pursuit under stimulus–response uncertainty

2004 ◽  
Vol 19 (1) ◽  
pp. 100-102 ◽  
Author(s):  
Marian Berryhill ◽  
Kestutis Kveraga ◽  
Leanne Boucher ◽  
Howard C. Hughes
Keyword(s):  
Smooth Pursuit ◽  
Response Uncertainty ◽  
Stimulus Response

scholarly journals Saccade countermanding reflects automatic inhibition as well as top-down cognitive control

2019 ◽  
Author(s):  
Aline Bompas ◽  
Anne Eileen Campbell ◽  
Petroc Sumner
Keyword(s):  
Temporal Dynamics ◽  
Visual Signals ◽  
Behavioral Measure ◽  
Visually Guided ◽  
Top Down ◽  
Oculomotor Behavior ◽  
Stimulus Response ◽  
Signal Features ◽  
Human Ability ◽  
Stop Signal Reaction Time

AbstractCountermanding behavior has long been seen as a cornerstone of executive control – the human ability to selectively inhibit undesirable responses and change plans. In recent years, however, scattered evidence has emerged that stopping behavior is entangled with simpler automatic stimulus-response mechanisms. Here we give flesh to this idea by merging the latest conceptualization of saccadic countermanding with a versatile neural network model of visuo-oculomotor behavior that integrates bottom-up and top-down drives. This model accounts for all fundamental qualitative and quantitative features of saccadic countermanding, including neuronal activity. Importantly, it does so by using the same architecture and parameters as basic visually guided behavior and automatic stimulus-driven interference. Using simulations and new data, we compare the temporal dynamics of saccade countermanding with that of saccadic inhibition (SI), a hallmark effect thought to reflect automatic competition within saccade planning areas. We demonstrate how SI accounts for a large proportion of the saccade countermanding process when using visual signals. We conclude that top-down inhibition acts later, piggy-backing on the quicker automatic inhibition. This conceptualization fully accounts for the known effects of signal features and response modalities traditionally used across the countermanding literature. Moreover, it casts different light on the concept of top-down inhibition, its timing and neural underpinning, as well as the interpretation of stop-signal reaction time, the main behavioral measure in the countermanding literature.

scholarly journals Latency of smooth pursuit under conditions of stimulus-response uncertainty

2010 ◽  
Vol 2 (7) ◽  
pp. 179-179
Author(s):  
M. E. Berryhill ◽  
L. Boucher ◽  
K. Kveraga ◽  
H. C. Hughes
Keyword(s):  
Smooth Pursuit ◽  
Response Uncertainty ◽  
Stimulus Response

Effects of Directional Uncertainty on Visually-Guided Joystick Pointing

2005 ◽  
Vol 100 (1) ◽  
pp. 267-274 ◽  
Author(s):  
Marian Berryhill ◽  
Kestutis Kveraga ◽  
Howard C. Hughes
Keyword(s):  
Eye Movements ◽  
Smooth Pursuit ◽  
Reaction Times ◽  
Oculomotor System ◽  
Step Function ◽  
Response Uncertainty ◽  
Uncertainty Condition ◽  
Stimulus Response ◽  
Hick’S Law ◽  
Choice Reaction Times

Reaction times generally follow the predictions of Hick's law as stimulus-response uncertainty increases, although notable exceptions include the oculomotor system. Saccadic and smooth pursuit eye movement reaction times are independent of stimulus-response uncertainty. Previous research showed that joystick pointing to targets, a motor analog of saccadic eye movements, is only modestly affected by increased stimulus-response uncertainty; however, a no-uncertainty condition (simple reaction time to 1 possible target) was not included. Here, we re-evaluate manual joystick pointing including a no-uncertainty condition. Analysis indicated simple joystick pointing reaction times were significantly faster than choice reaction times. Choice reaction times (2, 4, or 8 possible target locations) only slightly increased as the number of possible targets increased. These data suggest that, as with joystick tracking (a motor analog of smooth pursuit eye movements), joystick pointing is more closely approximated by a simple/choice step function than the log function predicted by Hick's law.

Effects of stimulus-response uncertainty on saccades to near-threshold targets

2005 ◽  
Vol 162 (3) ◽  
pp. 401-405 ◽  
Author(s):  
Kestutis Kveraga ◽  
Howard C. Hughes
Keyword(s):  
Response Uncertainty ◽  
Stimulus Response ◽  
Near Threshold

scholarly journals Effects of stimulus-response uncertainty on watchkeeping performance and choice reactions

1967 ◽  
Vol 2 (11) ◽  
pp. 511-515 ◽  
Author(s):  
Richard A. Kulp ◽  
Earl A. Alluisi
Keyword(s):  
Response Uncertainty ◽  
Stimulus Response
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