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X-WR-CALNAME:Djavad Mowafaghian Centre for Brain Health | DMCBH
X-ORIGINAL-URL:https://www.centreforbrainhealth.ca
X-WR-CALDESC:Events for Djavad Mowafaghian Centre for Brain Health | DMCBH
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DTSTART;TZID=America/Vancouver:20250404T110000
DTEND;TZID=America/Vancouver:20250404T120000
DTSTAMP:20260503T133519
CREATED:20250214T224938Z
LAST-MODIFIED:20250303T190048Z
UID:15549-1743764400-1743768000@www.centreforbrainhealth.ca
SUMMARY:Dr. Sophie Caron: The ecological mind — making sense of the world with a tiny brain
DESCRIPTION:Zoom option if unable to attend in person:\nZoom link here (click on “Join a meeting”)\nMeeting ID: 91512 289258\nPasscode: 289258\n\nBrains are evolved to learn\, enabling animals to respond flexibly to an unpredictable world and to draw on experience to guide future behaviors. To learn efficiently\, brains need to balance a high degree of flexibility in the representation of the outside world with the limited neuronal infrastructure available to them. Focusing on the Drosophila melanogaster olfactory system\, my research investigates how the neuronal circuits that enable efficient learning are pre-configured to interpret the world. In my presentation\, I will explore two key questions: First\, what are the neural pre-configurations that allow the brain to learn efficiently from the environment? Second\, how are these pre-configurations shaped by the ecological conditions in which brains evolve? Using a wide range of approaches — from neurogenetics and behavioral assays to cross-species comparisons and the study of species interactions — we reveal the subtle ways in which ecology shapes neuronal circuit architecture and function. \n 
URL:https://www.centreforbrainhealth.ca/events/dr-sophie-caron/
LOCATION:Rudy North Lecture Theatre\, Djavad Mowafaghian Centre for Brain Health\, 2215 Wesbrook Mall\, Vancouver\, British Columbia\, V6T 1Z3\, Canada
CATEGORIES:Neuroscience Research Colloquium
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BEGIN:VEVENT
DTSTART;TZID=America/Vancouver:20250411T110000
DTEND;TZID=America/Vancouver:20250411T120000
DTSTAMP:20260503T133519
CREATED:20240320T234924Z
LAST-MODIFIED:20250102T195134Z
UID:13088-1744369200-1744372800@www.centreforbrainhealth.ca
SUMMARY:Dr. Sandeep Robert Datta: Structure and meaning in natural behavior
DESCRIPTION:Zoom option if unable to attend in person:\nZoom link here (click on “Join a meeting”)\nMeeting ID: 91512 289258\nPasscode: 289258\n\nEthologists describing animals in the wild have long appreciated that naturalistic\, self-motivated behavior is built from modules that are linked together over time into predictable sequences. Many such sequences are built to extract information from the environment. And yet\, it remains unclear how the brain regulates the selection of individual behavioral modules for expression at any given moment\, or how it dynamically composes these modules into the fluid behaviors observed when animals act of their own volition\, and in the absence of experimental restraint\, task structure or explicit reward. Here we use novel methods for characterizing spontaneous mouse behavior — combined with neural recordings and closed-loop manipulations — to reveal mechanisms used by the brain to create the architecture of self-guided behavior. I will describe recent results in which we explain behavioral variation across timescales ranging from milliseconds to millennia.
URL:https://www.centreforbrainhealth.ca/events/dr-sandeep-robert-datta/
LOCATION:Rudy North Lecture Theatre\, Djavad Mowafaghian Centre for Brain Health\, 2215 Wesbrook Mall\, Vancouver\, British Columbia\, V6T 1Z3\, Canada
CATEGORIES:Neuroscience Research Colloquium
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BEGIN:VEVENT
DTSTART;TZID=America/Vancouver:20250425T110000
DTEND;TZID=America/Vancouver:20250425T120000
DTSTAMP:20260503T133519
CREATED:20240320T171011Z
LAST-MODIFIED:20250102T193028Z
UID:13073-1745578800-1745582400@www.centreforbrainhealth.ca
SUMMARY:Dr. Simon Chen: Probing the temporal dynamics of noradrenaline release at fine spatial scales during motor learning in healthy and diseased brains
DESCRIPTION:Zoom option if unable to attend in person:\nZoom link here (click on “Join a meeting”)\nMeeting ID: 91512 289258\nPasscode: 289258\n\nNoradrenaline (NA) is a strong modulator of neuronal activity\, and many symptoms in patients with Autism Spectrum Disorder (ASD) can be attributed to the maladaptive activity of locus coeruleus (LC)\, the main source of forebrain NA; hence\, it has garnered much attention as a potential lens through which to view and understand ASD. Our lab recently uncovered a role for dysregulated LC-NA function in motor learning delays in the 16p11.2 deletion mouse model of ASD (Yin et al.\, Nature Neuroscience 2021). We found that reduced NA levels in the primary motor cortex (M1) caused delays in motor learning and increased neuronal activity in pyramidal neurons (PNs) of M1 in 16p11.2 deletion mice. Strikingly\, both the behavioral and neuronal phenotypes were rescued by chemogenetic activation of LC-NA. \nIn order to fully characterize the local dynamic NA levels during learning in the 16p11.2 deletion mice\, we employ a newly developed optical NA sensor\, GRABNE\, with in vivo two-photon imaging to visualize the spatiotemporal release patterns of NA in M1 during motor learning. Intriguingly\, we find that while wild-type (WT) mice exhibit consistently elevated NA levels during movements\, 16p11.2 deletion mice show a delay in behaviorally induced NA increases. In addition to the delay in temporal dynamics\, 16p11.2 deletion mice show altered spatial dynamics\, with sparser and less behavior-specific NA release across M1 during the initial learning. In addition\, we also assess the LC-NA axonal neuronal activity in M1 using in vivo Ca2+ imaging. We also observe that behavior-related activity transients are less reliable in 16p11.2 deletion mice with more unspecific activity transients during the baseline period. Intriguingly\, pharmacological and closed loop optogenetic manipulations that disrupt the spatial and temporal specificity of NA release\, respectively\, in M1 were sufficient to induce delayed motor learning in WT mice. Our results offer new insights into the temporal dynamics of NA release at fine spatial scales within one brain region and how the specificities are critical for motor skill acquisition.
URL:https://www.centreforbrainhealth.ca/events/dr-simon-chen/
LOCATION:Rudy North Lecture Theatre\, Djavad Mowafaghian Centre for Brain Health\, 2215 Wesbrook Mall\, Vancouver\, British Columbia\, V6T 1Z3\, Canada
CATEGORIES:Neuroscience Research Colloquium
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