A Computational Model for the Effect of Dopamine on Action Selection During Stroop Test

  • Ozkan Karabacak
  • N. Serap Sengor
Part of the Lecture Notes in Computer Science book series (LNCS, volume 4131)


Based on a connectionist model of cortex-basal ganglia-thalamus loop recently proposed by authors, a simple connectionist model realizing the Stroop effect is established. The connectionist model of cortex-basal ganglia-thalamus loop is a nonlinear dynamical system and the model is not only capable of revealing the action selection property of basal ganglia but also is capable of modelling the effect of dopamine on action selection. While the interpretation of action selection function is based on solutions of nonlinear dynamical system, the effect of dopamine is modelled by a parameter. The effect of dopamine in inhibiting the habitual behaviour corresponding to word reading in Stroop test and letting the novel one occur corresponding to colour naming is investigated using the model established in this work.


Basal Ganglion Word Reading Stroop Task Action Selection Stroop Effect 
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Copyright information

© Springer-Verlag Berlin Heidelberg 2006

Authors and Affiliations

  • Ozkan Karabacak
    • 1
  • N. Serap Sengor
    • 1
  1. 1.Faculty of Electrical and Electronic Engineering, Electronics Engineering Department, MaslakIstanbul Technical UniversityIstanbulTurkey

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