Keep focussing: striatal dopamine multiple functions resolved in a single mechanism tested in a simulated humanoid robot
The effects of striatal dopamine (DA) on behavior have been widely investigated over the past decades, with ``phasic'' burst firings considered as the key expression of a reward prediction error responsible for reinforcement learning. Less well studied is tonic DA, where putative function...
| Main Authors: | , , , , , , , |
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| Format: | Article |
| Language: | English |
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Frontiers Media S.A.
2014-02-01
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| Series: | Frontiers in Psychology |
| Subjects: | |
| Online Access: | http://journal.frontiersin.org/Journal/10.3389/fpsyg.2014.00124/full |
| _version_ | 1819296602497482752 |
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| author | Vincenzo G. Fiore Valerio eSperati Francesco eMannella Marco eMirolli Kevin eGurney Karl eFriston Raymond J. Dolan Gianluca eBaldassarre |
| author_facet | Vincenzo G. Fiore Valerio eSperati Francesco eMannella Marco eMirolli Kevin eGurney Karl eFriston Raymond J. Dolan Gianluca eBaldassarre |
| author_sort | Vincenzo G. Fiore |
| collection | DOAJ |
| description | The effects of striatal dopamine (DA) on behavior have been widely investigated over the past decades, with ``phasic'' burst firings considered as the key expression of a reward prediction error responsible for reinforcement learning. Less well studied is tonic DA, where putative functions include the idea that it is a regulator of vigor, incentive salience, disposition to exert an effort and a modulator of approach strategies. We present a preliminary model combining tonic and phasic DA to show how different outflows triggered by either intrinsically or extrinsically motivating stimuli dynamically affect the basal ganglia by impacting on a selection process that this system performs on the inputs provided by the targeted cortex.<br/>The model, which has been tested on the simulated humanoid robot iCub in the interaction with a mechatronic board, shows the putative functions ascribed to DA emerging from the combination of a standard computational mechanism coupled to a differential sensitivity to the presence of DA across the striatum. |
| first_indexed | 2024-12-24T05:00:43Z |
| format | Article |
| id | doaj.art-1bda99684e2c488fb9be959901f7344c |
| institution | Directory Open Access Journal |
| issn | 1664-1078 |
| language | English |
| last_indexed | 2024-12-24T05:00:43Z |
| publishDate | 2014-02-01 |
| publisher | Frontiers Media S.A. |
| record_format | Article |
| series | Frontiers in Psychology |
| spelling | doaj.art-1bda99684e2c488fb9be959901f7344c2022-12-21T17:14:10ZengFrontiers Media S.A.Frontiers in Psychology1664-10782014-02-01510.3389/fpsyg.2014.0012459656Keep focussing: striatal dopamine multiple functions resolved in a single mechanism tested in a simulated humanoid robotVincenzo G. Fiore0Valerio eSperati1Francesco eMannella2Marco eMirolli3Kevin eGurney4Karl eFriston5Raymond J. Dolan6Gianluca eBaldassarre7Wellcome Trust Centre for Neuroimaging, UCL Institute of NeurologyConsiglio Nazionale delle RicercheConsiglio Nazionale delle RicercheConsiglio Nazionale delle RicercheUniversity of SheffieldWellcome Trust Centre for Neuroimaging, UCL Institute of NeurologyWellcome Trust Centre for Neuroimaging, UCL Institute of NeurologyConsiglio Nazionale delle RicercheThe effects of striatal dopamine (DA) on behavior have been widely investigated over the past decades, with ``phasic'' burst firings considered as the key expression of a reward prediction error responsible for reinforcement learning. Less well studied is tonic DA, where putative functions include the idea that it is a regulator of vigor, incentive salience, disposition to exert an effort and a modulator of approach strategies. We present a preliminary model combining tonic and phasic DA to show how different outflows triggered by either intrinsically or extrinsically motivating stimuli dynamically affect the basal ganglia by impacting on a selection process that this system performs on the inputs provided by the targeted cortex.<br/>The model, which has been tested on the simulated humanoid robot iCub in the interaction with a mechatronic board, shows the putative functions ascribed to DA emerging from the combination of a standard computational mechanism coupled to a differential sensitivity to the presence of DA across the striatum.http://journal.frontiersin.org/Journal/10.3389/fpsyg.2014.00124/fullBasal GangliaDopaminecomputational modeliCubselectionaction selection |
| spellingShingle | Vincenzo G. Fiore Valerio eSperati Francesco eMannella Marco eMirolli Kevin eGurney Karl eFriston Raymond J. Dolan Gianluca eBaldassarre Keep focussing: striatal dopamine multiple functions resolved in a single mechanism tested in a simulated humanoid robot Frontiers in Psychology Basal Ganglia Dopamine computational model iCub selection action selection |
| title | Keep focussing: striatal dopamine multiple functions resolved in a single mechanism tested in a simulated humanoid robot |
| title_full | Keep focussing: striatal dopamine multiple functions resolved in a single mechanism tested in a simulated humanoid robot |
| title_fullStr | Keep focussing: striatal dopamine multiple functions resolved in a single mechanism tested in a simulated humanoid robot |
| title_full_unstemmed | Keep focussing: striatal dopamine multiple functions resolved in a single mechanism tested in a simulated humanoid robot |
| title_short | Keep focussing: striatal dopamine multiple functions resolved in a single mechanism tested in a simulated humanoid robot |
| title_sort | keep focussing striatal dopamine multiple functions resolved in a single mechanism tested in a simulated humanoid robot |
| topic | Basal Ganglia Dopamine computational model iCub selection action selection |
| url | http://journal.frontiersin.org/Journal/10.3389/fpsyg.2014.00124/full |
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