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DTSTART:19960101T000000 END:STANDARD BEGIN:STANDARD TZNAME:GMT TZOFFSETFROM:+0100 TZOFFSETTO:+0000 DTSTART:19961027T020000 RRULE:FREQ=YEARLY;BYMONTH=10;BYDAY=-1SU END:STANDARD END:VTIMEZONE BEGIN:VEVENT DTSTAMP:20260624T152532Z DTSTART;VALUE=DATE-TIME:20121023T150000 DTEND;VALUE=DATE-TIME:20121023T160000 SUMMARY:Comp. Bio. Seminar Prof. Gunter Schumann (KCL) TZID:Europe/London UID:20121023-094d43a23a31199d013a3152703906ca@warwick.ac.uk CREATED:20121005T142657Z DESCRIPTION:Neurobehavioural analysis of reinforcement and its relevance for substance abuse: results from the IMAGEN study. Gunter Schumann\, MR C-SGDP Centre\, Institute of Psychiatry\, King’s College\, London Adoles cent behaviour has been associated with substance abuse and dependence l ater in life. Individual variability in reinforcement processes (i.e.\, (impulsivity\, novelty seeking\, reward dependence) predict risk for add ictions and describe motivations for drug use. Investigating how motivat ional and emotional cues affect individual variability in reinforcement behaviour at the genetic\, neurobiological and cognitive levels might in form us about neurobehavioural mechanisms conferring risk for addictions \, thus potentially maximizing the efficacy and efficiency of early inte rventions. In the EC-FP6 Integrated Project IMAGEN\, a European multicen tric longitudinal gene x neuroimaging study\, we aim to identify the gen etic and neurobiological basis of individual variability in reinforcemen t behaviour and determine their predictive value for the development of addictions and other psychiatric disorders. Comprehensive behavioural an d neuropsychological characterization\, functional and structural neuroi maging and genome-wide association analyses of 2000 14-year-old adolesce nts at baseline are coupled with ongoing longitudinal follow-up at 16 an d 19 years\, and combined with functional genetics in animal and human m odels. This lecture will focus on our recent investigations in 14 year-o ld adolescents of reinforcement mechanisms known to confer later risk fo r addictions. I will present structural and functional brain correlates of impulsivity (Schilling et al.\, Mol Psychiatry\, in press) and descri be how they relate to reward anticipation (Peters et al. Am J Psychiatry 2011) and risk taking (Schneider et al. Am J Psychiatry 2012) in substa nce abusing adolescents. I will discuss how gender and genetic factors i nfluence neural mechanisms underlying novelty seeking and impulsivity (N ymberg et al.\, in review\, in preparation)\, and how ADHD symptoms and early substance abuse are associated with distinct brain activity networ ks (Whelan et al.\, Nature Neuroscience\, 2012\; Jia et al\, in preparat ion). Finally\, I will discuss a novel mechanism underlying alcohol drin king behaviour\, which has been discovered through translational researc h integrating animal\, molecular and human gene x neuroimaging studies ( Stacey et al. in preparation). LOCATION:CS.007 URL:http://www2.warwick.ac.uk/fac/sci/dcs/research/combi/seminars/ ATTACH:http://www2.warwick.ac.uk/fac/sci/dcs/research/combi/seminars/ CATEGORIES: LAST-MODIFIED:20121005T142657Z ORGANIZER;CN="": END:VEVENT END:VCALENDAR