Computational models of adaptive behaviour

We develop interpretable, normative models of brain-body-environment interactions to understand how animals adapt their behaviour and neural responses.

We investigate how animals use computational principles to respond to their environment through two complementary approaches:

  • developing normative models of adaptive behaviour, and
  • analyzing multiscale neural dynamics through electrophysiology and fMRI.

Our modeling work has demonstrated that the body-part-centric receptive fields found in certain neurons naturally emerge from the need to act on the environment. These neurons collectively form an adaptive egocentric map that allows animals to handle novel tasks and challenges (e.g. TiCS 2018, Nat Neurosci 2025; Fig. 1, 2). We are currently expanding this Reinforcement Learning model into an Active Inference framework, to enable more fine-grained modeling of neural data. We are also using an Active Inference approach to explain counterintuitive behaviours, such as why animals tend to escape toward rather than away from threats when they initiate responses too early (Fig. 3).

Figure 1: The receptive fields of all artificial neurons in an example agent.  A large portion of artificial neurons display body-part centric responses that shift with the location of the limb. Receptive fields of each artificial neuron are shown as colour maps. ‘Peripersonal’ receptive fields are highlighted by a black box.

Figure 2: An artificial neural network (ANN) trained on simultaneous interception and avoidance tasks naturally adopts a modular structure, beneficial for use in an egocentric map (left, network graph). In this example ANN, individual neurons are classified as threat- or goal-preferring (red and blue, respectively). The network contains clear threat- and goal-preferring subnetworks appear (red and blue backgrounds, respectively). This modular structure is reminiscent of the primate parieto-premotor system, where peripersonal neurons cluster together based on their behavioral function (right).

Our analysis of empirical data has focused on understanding how neural oscillations and responses to salient stimuli link to behaviour, inference and learning. We have characterized how nervous systems exploit environmental regularities to predict sensory input, both through ultralow-frequency neural entrainment and through selective transient responses (e.g. PLoS Biol 2020, Cereb Cort 2021). Current projects include using resting-state, neural-event-triggered fMRI to investigate motor cortex activation during memory consolidation in sleep.

Future work centers on creating normative models for a range of environments and behaviours, providing interpretable regressors for mapping function onto neural structures. We are looking to develop models that predict interception and escape behaviour, interpret subcortical electrophysiology in defensive decision-making, infer latent neural states from calcium imaging and pupillometry, and describe cellular and epigenetic autopoietic processes. This integrated approach bridges theoretical neuroscience with experimental data to understand how adaptive behaviour emerges from neural computation.

Figure 3: Top row: Histograms of escape direction are shown for zebrafish larvae and chicks (far and center left), split into terciles based on the latency of their escape post-stimulus. The earliest 1/3rd of escapes (blue-line radial histograms) was directed towards the side on which the threatening stimulus was presented (green area; orange circle). The latest 1/3rd of escapes (red-line radial histograms) instead, was directed away from the threat (blue area). Similarly, mice (center right) move their bodies towards the threatening stimulus before escaping (green area), and humans (far right) move the cursor towards the looming circle at very short latencies (green area), before performing the instructed avoidance movement (blue area). Bottom row: An active inference model fit this threat-approaching result from all species well.
Project lead

See also

AI at EMBL

Shaping the role of artificial intelligence (AI) and machine learning in the life sciences

EMBL Rome

EMBL’s site in Italy is a centre for research in Epigenetics and Neurobiology

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