Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
6267274 | Current Opinion in Neurobiology | 2012 | 8 Pages |
In this review, I briefly summarize current neurobiological studies of decision-making that bear on two general themes. The first focuses on the nature of neural representation and dynamics in a decision circuit. Experimental and computational results suggest that ramping-to-threshold in the temporal domain and trajectory of population activity in the state space represent a duality of perspectives on a decision process. Moreover, a decision circuit can display several different dynamical regimes, such as the ramping mode and the jumping mode with distinct defining properties. The second is concerned with the relationship between biologically-based mechanistic models and normative-type models. A fruitful interplay between experiments and these models at different levels of abstraction have enabled investigators to pose increasingly refined questions and gain new insights into the neural basis of decision-making. In particular, recent work on multi-alternative decisions suggests that deviations from rational models of choice behavior can be explained by established neural mechanisms.
⺠We review recent work on neural circuit mechanism of decision-making. ⺠Temporal dynamics and population activity in the state space represent a duality of perspectives. ⺠A decision circuit can display the ramping mode and the jumping mode with distinct properties. ⺠Deviations from rational models of choice behavior can be explained by known neural mechanisms.