Bernadette Hannesse

Dopamine builds and reveals reward-associated latent behavioral attractors

The paper shows dopamine stabilizes reward-related neural attractors and guides behavior by activating them online in mice.

Individual variations in reward-seeking adaptability emerge among isogenic mice living in a micro-society and predict their response to nicotine

The paper studies individual differences in reward-seeking behavior among isogenic mice in a social environment and links these differences to nicotine response and dopaminergic adaptability.

Chronic nicotine increases midbrain dopamine neuron activity and biases individual strategies towards reduced exploration in a foraging task.

This study shows chronic nicotine exposure shifts decision-making strategies toward increased exploitation in a foraging task, with optogenetic manipulation of dopamine neurons replicating this effect.

Distinct dopamine circuits transmit the reinforcing and anxiogenic effects of nicotine

This study identifies distinct dopamine circuits in the ventral tegmental area that mediate nicotine's reinforcing and anxiogenic effects through opposing responses in neurons projecting to the nucleus accumbens and amygdala.

Social interactions impact on the dopaminergic system and drive individuality

The paper shows that social interactions shape individuality in mice by altering dopaminergic system adaptations and behavioral traits.