Brain Matters (Audio)

Brain Matters (Audio) is built from recorded talks presented by University of California Television. The speakers are researchers presenting their own work. The talks keep their original structure: conflict-of-interest disclosures, references to slides and thanks to collaborators at the close. Alzheimer's disease is the fixed point, and speakers come at it from very different distances. In 'Modeling Neurological Conditions Using Stem Cell-Derived Neurons: ApoE and APP in Alzheimer's Disease with Thomas C. Südhof - Sanford Stem Cell Symposium 2022', Südhof says he is not a stem cell biologist but a neuroscientist who finds stem cell methods useful. He then describes neurons cultured with ApoE variants forming synapses, and RAP, which blocks ApoE from binding its receptors, stopping that process. The detail goes all the way down to electrophysiological measurements. In 'How Changes in Proteins Can Lead to Diseases', the speaker takes on tau aggregation, explaining that tau has to stack in register and fold into a specific shape to form fibrils, with spaghetti and yarn standing in for the molecules. That speaker warns early on that the talk will raise more open questions than it answers. Closer to the clinic, Tarek Rajji presents trials that pair tDCS brain stimulation with cognitive remediation, citing earlier evidence that stimulation works best alongside another intervention. 'Can We Avoid Cognitive Decline with Age?' moves from healthy aging to dementia to modifiable risk. Its speaker calls the evidence for exercise more robust than for any other modifiable factor and cites Dr. Emily Reese's analysis of Rancho Bernardo study data on self-reported activity across decades. The Shiley-endowed lecture behind 'Cognitive Aging In The Oldest Old: Resilience And Risk Revealed' is more pointed. Its speaker is uneasy that people who have amyloid but no dementia are labeled preclinical in prevention trials and resilient elsewhere. The closing tribute praises that willingness to challenge dogma. 'The Role of Music in Dementia Caregiving Relationships' is the warmest material here. It describes a nursing assistant sharing a person's favorite jazz station during care and a woman singing back during a Passover song. It also covers Jenny Gubner's project pairing students with people living with dementia to build song playlists and make short documentary films. For a first listen, the music talk is the gentlest way in. The Südhof talk is the most technical. Listeners should expect the odd moment when a speaker points at a figure the audio cannot show. In return, working scientists explain in their own terms what they are learning about the aging brain.