scholarly journals Integrating cortico-limbic-basal ganglia architectures for learning model-based and model-free navigation strategies

Author(s):  
Mehdi Khamassi ◽  
Mark D. Humphries
Author(s):  
Quentin J. M. Huys ◽  
Anthony Cruickshank ◽  
Peggy Seriès

Author(s):  
Quentin J. M. Huys ◽  
Anthony Cruickshank ◽  
Peggy Seriès

2020 ◽  
Author(s):  
Neil Schmitzer-Torbert

Studies of decision-making in rodents have demonstrated that vicarious trial-and-error (VTE) is an important behavioral index of deliberation, when animals search through and evaluate the available options before making a decision. In rodents, VTE is enhanced during the use of hippocampally-dependent place strategies, which may represent a type of model-based behavior. While some evidence exists for VTE-like behaviors in humans during navigation, it is unknown if VTE in humans is specifically associated place-strategies, as would be predicted for model-based behaviors. To address this gap, humans were tested in navigation tasks in symmetrical environments, which allowed for the use of probe trials to assess navigation strategies (place or response) or impose them directly. The use of place strategies (on probe trials and place-training) was associated with increases in measures of VTE (reorientations and pausing) especially at high-cost decision points, similar to results from rodent studies. In contrast, response-strategies were associated with the development of efficient, stereotyped trajectories (consistent with model-free learning). These results support the identification of place- and response-strategies in human navigation with model-based and model-free learning, respectively, and demonstrate that VTE is specifically related to the use of place-strategies.


2020 ◽  
Vol 43 ◽  
Author(s):  
Peter Dayan

Abstract Bayesian decision theory provides a simple formal elucidation of some of the ways that representation and representational abstraction are involved with, and exploit, both prediction and its rather distant cousin, predictive coding. Both model-free and model-based methods are involved.


2019 ◽  
Author(s):  
Leor M Hackel ◽  
Jeffrey Jordan Berg ◽  
Björn Lindström ◽  
David Amodio

Do habits play a role in our social impressions? To investigate the contribution of habits to the formation of social attitudes, we examined the roles of model-free and model-based reinforcement learning in social interactions—computations linked in past work to habit and planning, respectively. Participants in this study learned about novel individuals in a sequential reinforcement learning paradigm, choosing financial advisors who led them to high- or low-paying stocks. Results indicated that participants relied on both model-based and model-free learning, such that each independently predicted choice during the learning task and self-reported liking in a post-task assessment. Specifically, participants liked advisors who could provide large future rewards as well as advisors who had provided them with large rewards in the past. Moreover, participants varied in their use of model-based and model-free learning strategies, and this individual difference influenced the way in which learning related to self-reported attitudes: among participants who relied more on model-free learning, model-free social learning related more to post-task attitudes. We discuss implications for attitudes, trait impressions, and social behavior, as well as the role of habits in a memory systems model of social cognition.


Author(s):  
Mohammad Fahmi Nugraha

The environmental problems at this time, especially the diversity of bat cave dwellers in the karst of Cibalong, Tasikmalaya should be given the special attention by all of the society elements, especially by the educators who must act real and solve the problems to give the view of knowledge to the community and the students in understanding the importance of bats which is considered as a pest and it is associated with mystical things. One of the effort is looking for and implementing  some of learning model based on the local wisdom to change and establish the scientific thinking of the sociaety and the students to analyze the presence of bat in term of the survival of the ecosystem. It is expected that bats and their habitats in Karst of Cibalong, Tasikmalaya can be preserved.


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