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| Author | Behrens, T.E.J.; Hunt, L.T.; Woolrich, M.W.; Rushworth, M.F.S. | ||||
| Title | Associative learning of social value | Type | Journal Article | ||
| Year | 2008 | Publication | Abbreviated Journal | Nature | |
Volume  |
456 | Issue | 7219 | Pages | 245-249 |
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| Abstract | Our decisions are guided by information learnt from our environment. This information may come via personal experiences of reward, but also from the behaviour of social partners1, 2. Social learning is widely held to be distinct from other forms of learning in its mechanism and neural implementation; it is often assumed to compete with simpler mechanisms, such as reward-based associative learning, to drive behaviour3. Recently, neural signals have been observed during social exchange reminiscent of signals seen in studies of associative learning4. Here we demonstrate that social information may be acquired using the same associative processes assumed to underlie reward-based learning. We find that key computational variables for learning in the social and reward domains are processed in a similar fashion, but in parallel neural processing streams. Two neighbouring divisions of the anterior cingulate cortex were central to learning about social and reward-based information, and for determining the extent to which each source of information guides behaviour. When making a decision, however, the information learnt using these parallel streams was combined within ventromedial prefrontal cortex. These findings suggest that human social valuation can be realized by means of the same associative processes previously established for learning other, simpler, features of the environment. | ||||
| Address | |||||
| Corporate Author | Thesis | ||||
| Publisher | Macmillan Publishers Limited. All rights reserved | Place of Publication | Editor | ||
| Language | Summary Language | Original Title | |||
| Series Editor | Series Title | Abbreviated Series Title | |||
| Series Volume | Series Issue | Edition | |||
| ISSN | 0028-0836 | ISBN | Medium | ||
| Area | Expedition | Conference | |||
| Notes | 10.1038/nature07538 | Approved | no | ||
| Call Number | Equine Behaviour @ team @ | Serial | 4681 | ||
| Permanent link to this record | |||||
| Author | Streit, S.; Zeitler-Feicht, M. H.; Dempfle, L. | ||||
| Title | Gibt es in der Gruppenhaltung von Pferden bei der Abruffütterung am Automaten mehr Auseinandersetzungen als bei der Fütterung in Fressständen? [Keeping horses in groups, are there more confrontations when feeding is done with automatic feeding systems than with feeding stalls?] | Type | Book Chapter | ||
| Year | 2008 | Publication | KTBL-Schriften | Abbreviated Journal | |
| Volume |
471 | Issue | Pages | ||
| Keywords | |||||
| Abstract | Das Droh- und Meideverhalten von 270 Pferden wurde im Fressbereich von 10 Offenlaufställen mit Fressständen und 11 Offenlaufställen mit computergesteuerten Abrufstationen anhand von visuellen kontinuierlichen Direktbeobachtungen erfasst. Diese erfolgten je Betrieb über einen 24-Stunden-Tag, der nach dem Tortenstückverfahren (6x4 Stunden) zusammengesetzt war. Insgesamt wurden 6297 agonistische Verhaltensweisen in, vor und hinter den Fütterungseinrichtungen registriert (Meiden 40,6 %, Verdrängen 12,8 %, Beißen/ Hinterhandschlag/ Angehen 12,7 % und Drohen/ Drohbeißen/ Hinterhanddrohen 33,9 %). In den Futterstationen wurden 22,5 % dieses Verhaltens beobachtet, vor und hinter den Futterstationen 77,5 %. Bei den Betrieben mit Fressständen fanden 31 % der agonistischen Verhaltensweisen in den Ständen statt, bei den Betrieben mit Abruffütterung 21 %. Der Einfl uss des einzelnen Betriebes (innerhalb Fütterungssystem) auf die agonistischen Verhaltensweisen vor und hinter den Fütterungseinrichtungen war signifi kant. Die Auswertung ergab, dass Drohgesten im Wartebereich von Abrufstationen häufi ger auftreten als in dem von Fressständen. Demgegenüber können Pferde in Abrufstationen ungestörter fressen. Insgesamt betrachtet war jedoch die Anzahl an sozionegativen Interaktionen im Bereich der Futtereinrichtungen bei beiden Fütterungssystemen gering. Die agonistischen Verhaltensweisen wurden zusätzlich noch von der Heumenge und dem Konstitutionstyp beeinfl usst. Der Betrieb erwies sich als maßgeblicher Einfl ussfaktor. Als Resümee ergibt sich, dass bei ordnungsgemäßer Gruppenhaltung mit fachgerechtem Management beide Fütterungssysteme für Pferde im Offenlaufstall geeignet sind. [The threatening and avoiding behaviour of 270 horses living in run-out sheds was observed at 10 stables with feeding stalls and at 11 stables with automatic feeding systems for hay and concentrates. Every group of horses was observed on five succeeding days visually and immediately for 6 sessions, each of 4 hours. These 6 slices form together 24 hours, a complete day. Altogether, 6297 agonistic behaviour patterns were registered in front of, inside and behind the feeding stations (avoiding behaviour 40.6 %, edging out of others 12.8 %, Auseinandersetzungen an automatischer Abruffütterung und Fressständen KTBL-Schrift 471 79 biting/rear leg kicking/charging 12.7 % und threatening/biting threats/rear leg kicking threats 33.9 %). 22.5 % of these types of behaviour were recorded in the feeding stations, 77.5 % together in front and behind of these. In the stables with feeding stalls there were 31 % of the observed threatening gestures inside the feeding stations, in the stables with automatic feeders only 21 %. The individual farm showed signifi cant infl uence on the modes of agonistic behaviour in front and behind the feeding facilities. Threatening gestures happen more often in the waiting area of automatic feeders than in that of feeding stalls. On the other hand horses in computer controlled systems will be less disturbed at eating. All together the number of negative interactions in the feeding area at both feeding systems was relatively low. In addition the agonistic behaviour was infl uenced by the quantity of hay and the constitutional typ of the horses. Because of the management of the individual stable exercises the most substantial infl uence on the behaviour of the horses, it can be said, that, correct group keeping with professional management provided, both feeding systems are suitable for horses in run-in sheds.] |
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| Address | |||||
| Corporate Author | Thesis | ||||
| Publisher | KTBL | Place of Publication | Editor | ||
| Language | Summary Language | Original Title | |||
| Series Editor | Series Title | Abbreviated Series Title | |||
| Series Volume | Series Issue | Edition | |||
| ISSN | ISBN | Medium | |||
| Area | Expedition | Conference | |||
| Notes | Approved | no | |||
| Call Number | Equine Behaviour @ team @ | Serial | 5763 | ||
| Permanent link to this record | |||||