Saccadic latency and choice in a concurrent random interval reinforcement schedule

Vullings, Cecile; Madelain, Laurent

Document type :

Communication dans un congrès avec actes

DOI :

10.1167/16.12.855

Permalink :

http://hdl.handle.net/20.500.12210/4161

Title :

Saccadic latency and choice in a concurrent random interval reinforcement schedule

Author(s) :

Vullings, Cecile [Auteur]
Laboratoire Sciences Cognitives et Sciences Affectives - UMR 9193 [SCALab]
Madelain, Laurent [Auteur]

Laboratoire Sciences Cognitives et Sciences Affectives - UMR 9193 [SCALab]

Conference title :

Vision Sciences Society

City :

St. Pete Beach, Florida

Country :

Etats-Unis d'Amérique

Start date of the conference :

2016-05-13

Journal title :

Journal of Vision

Publication date :

2016

HAL domain(s) :

Sciences cognitives

English abstract : [en]

Conventional decision models view reaction time as a consequence of the duration of decision-making process. However, some studies have shown that reaction time distributions may be strongly affected by reinforcement ...
Show more >Conventional decision models view reaction time as a consequence of the duration of decision-making process. However, some studies have shown that reaction time distributions may be strongly affected by reinforcement contingencies (Madelain et al., 2007). Here, we probe the possibility to voluntarily control saccadic latencies in a choice paradigm. Three subjects (including the two authors) tracked a visual target stepping horizontally by 10 deg between two fixed locations on a screen. Any trial with saccadic latencies greater than 300 ms or shorter than 80 ms was interrupted. Using the first and last quartiles of individual baseline latency distributions, we first defined two classes, i.e. "short" and "long" saccadic latencies, respectively. We then concurrently reinforced each type of latencies in random interval reinforcement schedules: "short" and "long" latencies were reinforced with three different sets of probabilities such that the relative ratio of reinforcing "short" latencies was either 9/1, 1/9 or 1/1. After training (20 800 trials), we observed bimodal latency distributions –with a peak for "short" and another for "long" latencies– for two subjects and to a lesser extent for the third subject. To further probe the extent of control over saccadic latencies, we then analyzed the data using the generalized matching law (Baum, 1974) –which states that the relative proportion of choices made to an option matches the relative proportion of reinforcers earned from that option. We found an almost perfect match between the relative proportion of "short" and "long" latencies and the relative obtained reinforcement for two subjects (sensitivities were equal to 0.95 and 0.87) and typical undermatching parameter for the third one (sensitivity = 0.58). These results indicate that saccades may be allocated in time following the reinforcement contingencies in force, which support the idea of a voluntary control of saccadic reaction time.Show less >

Language :

Anglais

Peer reviewed article :

Oui

Audience :

Internationale

ANR Project :

Renforcement et mouvements oculaires

Administrative institution(s) :

Université de Lille
CNRS
CHU Lille

Collections :

Sciences Cognitives et Sciences Affectives (SCALab) - UMR 9193

Research team(s) :

Équipe Action, Vision et Apprentissage (AVA)

Submission date :

2019-02-13T14:48:27Z
2020-04-08T12:14:19Z
2021-06-04T07:55:25Z
2021-06-29T07:58:43Z

Version history

Version	Link	Modification date
4	20.500.12210/4161*	2021-06-29T07:58:07Z
3	20.500.12210/4161.3	2021-06-04T07:53:21Z
2	20.500.12210/4161.2	2020-04-08T12:11:51Z
1	20.500.12210/4161.1	2019-02-13T14:48:27Z

*Selected version

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