Context-Dependent Urgency Influences Speed–Accuracy Trade-Offs in Decision-Making and Movement Execution


  1. David Thura
  2. Ignasi Cos
  3. Jessica Trung, and 
  4. Paul Cisek

Volume 34, Issue 49, 16442 - 16454, December 03, 2014



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Friday November 14, 2014, Afternoon session
Renaissance Washington DC hotel, Renaissance Ballroom, East Salon


Jean-Francois Cabana, David Thura, Paul Cisek*

* Speaker
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Dynamic decisions about actions:

Neural correlates of the urgency-gating model




Tuesday October 21, 2014, 4.00 pm


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Dynamic decisions about actions:

Evidence for an embodied, urgency-based mechanism for reward rate maximization


Wednesday June 11, 2014, 1.30pm





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May 25 - 28, 2014

MONTREAL (Quebec), CANADA



Satellite: Linking primate brain circuits to behavior: advancements and applications

Sunday May 25, 9AM to 4:45PM


Talk: Micro-stimulation of premotor and motor cortex affects choice duration during dynamic decision-making

D. THURA, P. CISEK


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NEW PAPER PUBLISHED IN NEURON 




Deliberation and Commitment in the Premotor and Primary Motor Cortex during Dynamic Decision Making

David Thura and Paul Cisek

Neuron, Volume 81, Issue 6, 1401 - 1416, 19 March 2014

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San Diego (United States of America) - Nov 9-13, 2013



Poster

A common urgency/vigor signal governs speed/accuracy trade-offs in both decision-making and movement execution

D. THURA, J. TRUNG and P. CISEK

Tuesday, Nov 12, 2013, 2:00 PM - 3:00 PM




Poster

Neural activity build-up during decision-making is not caused by evidence accumulation but by a growing urge to act

P. CISEK and D. THURA 

Sunday, Nov 10, 2013, 3:00 PM - 4:00 PM




Poster

Decision-making is influenced by a context-dependent urgency signal

M. CARLAND, E. MARCOS, D. THURA, P. VERSCHURE, P. CISEK 

Sunday, Nov 10, 2013, 3:00 PM - 4:00 PM


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Toronto (Canada) - May 21-24, 2013



Poster

A common urgency/vigor signal governs speed/accuracy trade-offs in both decision-making and movement execution

D. THURA and P. CISEK

Friday, May 24, 2013, 12:00 PM - 3:00 PM




Poster

Neural activity build-up during decision-making is not attributable to evidence accumulation

P. CISEK and D. THURA 

Wednesday, May 22, 2013, 12:00 PM - 3:00 PM




Poster

Decision-making is influenced by a context-dependent urgency signal: Model and experimental data

M. CARLAND, E. MARCOS, D. THURA, P. VERSCHURE, P. CISEK 

Wednesday, May 22, 2013, 12:00 PM - 3:00 PM


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San Juan (Puerto Rico) - April 16-20, 2013



Poster

A common urgency/vigor signal governs speed/accuracy trade-offs in both decision-making and movement execution

D. THURA and P. CISEK

Thursday - Friday, April 18-19, 2013, 1:00 PM - 3:00 PM




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New Orleans (USA) - October 13-17, 2012



Nanosymposium on decision-making

Neural bases of speed/accuracy trade-off adjustments during decision-making and movement execution in monkeys

D. THURA, P. CISEK

Wednesday, Oct 17, 2012, 9:45 AM -10:00 AM



Poster

Decision-making depends on an urgency signal modulated by context

E. MARCOS, M. CARLAND, D. THURA, P. CISEK, P. F. VERSCHURE

Monday, Oct 15, 2012, 3:00 PM - 4:00 PM

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April 22-29, 2012 - Venice, ITALY






Monkey premotor and motor cortex reflect the decision process and
 determine the commitment to initiate a reaching movement

David Thura & Paul Cisek


Wednesday, April 25 - 16h


Please check out the abstract of the presentation



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November 11-17, 2011 - Washington D.C., USA






Neural activity during adjustment of the speed-accuracy trade-off

 in a reach decision task


David THURA and Paul CISEK


Tuesday, Nov 15 - 08.00am (609.17 / VV73)


Please check out my poster



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 Groupe de Recherche sur le Systeme Nerveux Central (GRSNC)


September 23-24, 2011 - Orford (QC), Canada


Neural activity during adjustment of speed-accuracy trade-off in a reach decision time

David Thura and Paul Cisek


Please check out my poster





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Monkey frontal cortex reflects the time course of changing evidence 
for reach decisions

David Thura and Paul Cisek


Please check out my poster





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Physiological mechanisms of perception, cognition and action
Hotel Mount Gabriel, Sainte-Adèle, Quebec
February 10 to 12, 2011


Saturday, feb 12 - 11.00am

David Thura and Paul Cisek


Thursday, feb 10 - 05.30pm

"Possible roles of PMd, M1 and DLPFC in decision making"
Emilie Coallier, Thomas Michelet, David Thura and John Kalaska

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Marseille, France



Vendredi 17 décembre 2010, 14h30


"Monkey frontal cortex reflects the time course of changing evidence for reach decisions"
David Thura and Paul Cisek




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40th annual meeting of the Society for Neuroscience - November 13-17, 2010 - San Diego (CA), USA


Monkey frontal cortex reflects the time course of changing evidence 
for reach decisions

David Thura and Paul Cisek


Please check out my poster



Neural correlates of observational learning in non human primates

Belmalih A., Thura D., Isbaine F., Brovelli A., Demolliens M., Meunier M. and Boussaoud D.



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Thura D, Hadj-Bouziane F, Meunier M, Boussaoud D. 


Hand modulation of visual, preparatory, and saccadic activity in the monkey frontal eye field. 

Cerebral Cortex, In press.


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MONTREAL - MAY 10 - 11



Poster :

Human perceptual decisions in noisy, changing conditions
David Thura, Julie Beauregard-Racine and Paul Cisek


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Brain Awareness Week 2010

MONTREAL - March 15th-21st


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39th annual meeting of the Society for Neuroscience - October 17-21, 2009 - Chicago (IL), USA



Human perceptual decisions in noisy, changing conditions
David Thura, Julie Beauregard-Racine and Paul Cisek


Please check out my poster

Abstract:
In recent years, significant progress has been made toward understanding the neural basis of primate decision-making. Most decision-making studies and models have suggested that simple decisions are made through a process of ‘bounded integration’, in which neurons integrate sensory evidence until a threshold is reached. However, nearly all of the results supporting this theory have been obtained in tasks where sensory evidence was constant during the course of each trial. In this particular situation, behavioral and neural data are also compatible with a model in which there is no integration of sensory evidence, but instead a multiplication of current evidence by a growing ‘urgency’ signal. In a recent study, Cisek et al. (SfN abstract 2008) presented human subjects with a task (‘tokens’ task) in which evidence changed over time. Results were more consistent with the ‘urgency-gating’ model than with “integrator” models, but it was not clear whether this was task-dependent.Here, 11 human subjects performed a new task, conceptually similar to the ‘tokens’ task but perceptually close to the well-known ‘direction-discrimination’ task, in which subjects perform two-alternative perceptual decisions about the direction of motion in a dynamic random-dot display. In our task, each trial began with a centrally-located visual stimulus consisting of 200 dots moving in random directions. After 200ms, 6 of the dots began to move coherently in one of two opposite directions (right or left). After another 200ms, another 6 of the random dots began to move coherently in one of the two directions, and so on for a total of 15 steps. The subject’s task was to select, as soon as they felt confident enough, the target corresponding to the net direction of motion they predicted to see at the end of the trial. Once the choice was made, the remaining steps of coherence were reduced to a 20ms duration. To distinguish the models, we embedded in a full pseudorandom sequence some trials whose first 6 motion steps provided either a perceptual bias for or against the correct target. Consistent with the ‘urgency-gating’ model, decision times as well as success probabilities of 8/11 subjects were not significantly influenced by these early biases, suggesting that noisy sensory evidence in favor of a given choice was not integrated with a long time-constant. Additional analyses suggested that the level of certainty at which most subjects made their decisions decreased significantly during the course of a trial. Our results suggest that humans form decisions by comparing to a threshold the product of the momentary information provided by the environment with a growing signal related to elapsed time (‘urgency’).



22.09.09

Séminaire Etudiant - GRSNC - Université de Montréal




03.04.09


The new Math-Neuro at University of Montreal web site is now open !!


Feel free to visit it and post your comments/suggestions...




"HUMAN AND MONKEY PERCEPTUAL DECISIONS IN CHANGING CONDITIONS "


Conférence IFNL, le jeudi 19 mars 2009, 16h
Inserm U864, Bron France


See the abstract...
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