Dopaminergic modulation of the circadian activity and sociability: Dissecting parental inheritance versus maternal styles as determinants of epigenetic influence.

In mammalians, social life and circadian rhythms find their neurobiological basis in a network that includes the dopaminergic system. The malfunctioning of dopamine pathways can lead to various disorders such as Attention-Deficit/Hyperactivity and Obsessive/compulsive disorders. A useful research approach is to exploit animal models that carry a functional silencing of SLC6A3 gene, encoding the dopamine transporter (DAT).

Altering the development of the dopaminergic system through social play in rats: Implications for anxiety, depression, hyperactivity, and compulsivity.

Dopamine is essential to many functions like reward, motivation, and attention; when its neural pathways do not function properly, various disorders (e.g., anxiety, depression, hyperactivity, compulsions) can arise.

"Himalayan Bridge": A New Unstable Suspended Bridge to Investigate Rodents' Venturesome Behavior.

While both risk-taking and avoidant behaviors are necessary for survival, their imbalanced expression can lead to impulse-control and anxiety disorders, respectively. In laboratory rodents, the conflict between risk proneness and anxiety can be studied by using their innate fear of heights. To explore this aspect in detail and investigate venturesome behavior, here we used a "Himalayan Bridge," a rat-adapted version of the suspended wire bridge protocol originally developed for mice.

Striatal dynamics as determinants of reduced gambling vulnerability in the NHE rat model of ADHD.

The Naples High-Excitability (NHE) is a validated rat strain to model for a mesocortical variant of Attention Deficit Hyperactivity Disorder (ADHD). NHE rats' brains have a tuned-down cortical and a potentiated limbic loop (Zoratto et al., 2017).