Ricardo Tayar gives a presentation on measuring user experience through digital analytics and UX. He discusses three main ways to measure UX: ease of use through surveys like SUS, microconversions and key interactions, and neuromarketing metrics like stress, engagement and attention. Neuromarketing in particular provides valuable insights into how a user's nervous system responds to a digital product. The presentation emphasizes that UX needs to be measurable in order to understand how users interact with digital products and services.