We used focused ultrasound (FUS) sonication of the anterior cingualte and striatum to disrupt local processing during learning. FUS in ACC slowed down learning of atetntion sets – but only when the attentional demands were high and the task included the risk of loosing already attaiuned reward tokens. Under these cognitive and motivaitonally challenging conditions FUS reduce the ability to adapt and update attentional sets. See our paper Banaie Boroujeni et al. (2022) The anterior cingulate cortex causally supports flexible learning under motivationally challenging and cognitively demanding conditions. PLoS Biology. doi: https://doi.org/10.1101/2021.08.04.455080.
We tested which model mechanisms best explain how six animals learn attention sets and found a common set of most-important behavioral mechanisms that account for learning success.When learning attention sets is easy value based reinforcement learning and working memory are powerful, but when learning problems are more complex learning is more efficient with attention and […]
Our new paper shows that neurons in the striatum, anterior cingulate and prefrontal cortex encode learning variables in the phase of firing. We outline a powerful regression based analysis pipeline that revealed spiking activity of neurons relative to the phase of beta oscillations carries significant learning information during reversal learning. The paper can be downloaded […]
The lab has a first article published about the strength, latency and resonance patterns of connections between the anterior cingulate cortex and lateral prefrontal cortex of the macaque. This work was led by postdoc Veronica Nacher and is published in Brain Structure and Function. The paper identifies a novel electrical microstimulation protocol that can be […]