Topic: HMM-GLM model

The transition from goal-directed to habitual decision-making during learning is thought to be gradual, yet permanent. Current approaches for distinguishing between the two decision processes require discrete ‘test’ sessions that preclude assessment of the nature and timing of the transition. Here, we devised a naturalistic devaluation approach to assess the underlying decision mode en passant, without discrete ‘test’ sessions. We hypothesized that by shifting a need for plain water, to a preference, we would favor action rate variability in animals during the goal-directed phase, unmasking tr

Uncovering how a stream of sensory inputs maps onto a sequence of actions is crucial for understanding the nervous system. However, behavior is shaped not only by recent sensory stimuli but also by longer-term experiences, internal neuronal dynamics, and physiological states. As a result, the same experimental conditions can result in variable behaviors. We study the role of internal states in zebrafish larvae behavior, leveraging a rich dataset of three million movements recorded during spontaneous behavior, photomotor responses, optomotor responses, and visually driven escape in the zebraf