BEGIN:VCALENDAR VERSION:2.0 PRODID:-//132.216.98.100//NONSGML kigkonsult.se iCalcreator 2.20.4// BEGIN:VEVENT UID:20260412T033912EDT-9822oXR3Gx@132.216.98.100 DTSTAMP:20260412T073912Z DESCRIPTION:Rapid dynamics of dorsal raphe serotonin neurons regulate the s trength of visual attention\n\nJonas Lehnert (QLS Graduate)\, University o f Ottawa\n Tuesday April 28\, 12-1pm\n Zoom Link: https://mcgill.zoom.us/j/8 7078928687\n In Person: 550 Sherbrooke\, Room 189\n \n Abstract: Every moment \, a spotlight of attention roams the visual field to enhance detection of salient stimuli. While recent work has revealed how the brain selects sal ient relevant stimuli (attentional focus)\, it remains unclear how attenti on is modulated to suit fluctuating target salience or internal needs (att entional strength). Drawing on recently published work combining optical r ecordings and targeted perturbations in mice performing a cued detection t ask\, I will present circuit-level evidence that rapid serotonergic dynami cs selectively regulate attentional strength. When combined with computati onal modeling of cortical dorsal raphe serotonin signaling\, these finding s suggest that the brain independently controls attentional strength and a ttentional focus and identify rapid serotonergic neuromodulation as a new regulator of attentional strength.\n\nJonas is a recent QLS graduate who i s currently a postdoc in the Béïque Lab\, Department of Cellular and Molec ular Medicine\, University of Ottawa.\n DTSTART:20260428T160000Z DTEND:20260428T170000Z SUMMARY:QLS Seminar Series - Jonas Lehnert URL:/qls/channels/event/qls-seminar-series-jonas-lehne rt-372411 END:VEVENT END:VCALENDAR