A model on building and modifying the stimulus action association in the brain Beyinde Uyaran Hareket Ilişkisinin Oluşmasi ve Uyarlanmasina Dair Bir Model

Ercelik E., Elibol R., Şengör N. S.

2015 23rd Signal Processing and Communications Applications Conference, SIU 2015, Malatya, Turkey, 16 - 19 May 2015, pp.2533-2536 identifier identifier

  • Publication Type: Conference Paper / Full Text
  • Doi Number: 10.1109/siu.2015.7130400
  • City: Malatya
  • Country: Turkey
  • Page Numbers: pp.2533-2536
  • Keywords: Basal ganglia circuits, computational neuroscience model, dopamine, STDP, reward based learning
  • Middle East Technical University Affiliated: No

Abstract

© 2015 IEEE.It is expected that building computational models of neural structures taking part in generating cognitive processes and emotions would not only help us understanding the brain but also give us clues to diagnose and develop treatment for neurological disorders and diseases. In this work, a computational model of cognitive task, goal directed behavior is considered. The cortex-basal ganglia-thalamus loop which is known to be effective in goal directed behavior has been modeled. In the model, the stimulus which has been recognized by sensory cortex has been projected to motor cortex giving rise to an action. This relation between stimulus and action has been evaluated by reward and the connection between substructures taking part during this process has been modified by dopamine. This modification is done by spike time dependent plasticity which depends on dopamine level regulated by reward. So, the effect of stimulus on sensory cortex has been carried down to motor cortex by evaluating reward and association between stimuli and action has been built up.