Molecular Neurobiology

, Volume 55, Issue 1, pp 249–257 | Cite as

Cholinergic Behavior State-Dependent Mechanisms of Neocortical Gain Control: a Neurocomputational Study

  • J.-Y. Puigbò
  • G. Maffei
  • I. Herreros
  • M. Ceresa
  • M. A. González Ballester
  • P. F. M. J. Verschure


The embodied mammalian brain evolved to adapt to an only partially known and knowable world. The adaptive labeling of the world is critically dependent on the neocortex which in turn is modulated by a range of subcortical systems such as the thalamus, ventral striatum, and the amygdala. A particular case in point is the learning paradigm of classical conditioning where acquired representations of states of the world such as sounds and visual features are associated with predefined discrete behavioral responses such as eye blinks and freezing. Learning progresses in a very specific order, where the animal first identifies the features of the task that are predictive of a motivational state and then forms the association of the current sensory state with a particular action and shapes this action to the specific contingency. This adaptive feature selection has both attentional and memory components, i.e., a behaviorally relevant state must be detected while its representation must be stabilized to allow its interfacing to output systems. Here, we present a computational model of the neocortical systems that underlie this feature detection process and its state-dependent modulation mediated by the amygdala and its downstream target the nucleus basalis of Meynert. In particular, we analyze the role of different populations of inhibitory interneurons in the regulation of cortical activity and their state-dependent gating of sensory signals. In our model, we show that the neuromodulator acetylcholine (ACh), which is in turn under control of the amygdala, plays a distinct role in the dynamics of each population and their associated gating function serving the detection of novel sensory features not captured in the state of the network, facilitating the adjustment of cortical sensory representations and regulating the switching between modes of attention and learning.


Acetylcholine Neuromodulation Neocortical circuits Inhibitory network 



This work has been supported by the European Research Council’s CDAC project: “The Role of Consciousness in Adaptive Behavior: A Combined Empirical, Computational and Robot based Approach” (ERC-2013- ADG 341196); as well as the European Project What You Say Is What You Did WYSIWYD (FP7 ICT 612139).


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© Springer Science+Business Media, LLC 2017

Authors and Affiliations

  • J.-Y. Puigbò
    • 1
    • 2
  • G. Maffei
    • 1
    • 2
  • I. Herreros
    • 1
    • 2
  • M. Ceresa
    • 3
  • M. A. González Ballester
    • 3
    • 4
  • P. F. M. J. Verschure
    • 1
    • 2
    • 4
  1. 1.SPECS, DTICUniversitat Pompeu FabraBarcelonaSpain
  2. 2.Institut de Bioenginyeria de Catalunya (IBEC)BarcelonaSpain
  3. 3.SIMBIOsysUniversitat Pompeu FabraBarcelonaSpain
  4. 4.ICREABarcelonaSpain

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