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Topic: emotional expressions

Seminar
3 seminars

In Cognition and Neuroscience

Seminar · Electrophysiology

Deepfake emotional expressions trigger the uncanny valley brain response, even when they are not recognised as fake

Casey Becker · University of Pittsburgh

Wed, Apr 16, 2025 · 16:00 UTC

Facial expressions are inherently dynamic, and our visual system is sensitive to subtle changes in their temporal sequence. However, researchers often use dynamic morphs of photographs—simplified, linear representations of motion—to study the neural correlates of dynamic face perception. To explore the brain's sensitivity to natural facial motion, we constructed a novel dynamic face database using generative neural networks, trained on a verified set of video-recorded emotional expressions. The resulting deepfakes, consciously indistinguishable from videos, enabled us to separate biological mo

Seminar · Neuroscience

Sensory-motor control, cognition and brain evolution: exploring the links

Robert Barton · Durham University

Thu, Mar 25, 2021 · 16:00 UTC

Drawing on recent findings from evolutionary anthropology and neuroscience, professor Barton will lead us through the amazing story of the evolution of human cognition. Usingstatistical, phylogenetic analyses that tease apart the variation associated with different neural systems and due to different selection pressures, he will be addressing intriguing questions like ‘Why are there so many neurons in the cerebellum?’, ‘Is the neocortex the ‘intelligent’ bit of the brain?’, and ‘What explains that the recognition by humans of emotional expressions is disrupted by trancranial magnetic stimulati

Seminar · Cognition

What is serially-dependent perception good for?

Mauro Manassi · University of Aberdeen, UK

Thu, Jan 14, 2021 · 16:00 UTC

Perception can be strongly serially-dependent (i.e. biased toward previously seen stimuli). Recently, serial dependencies in perception were proposed as a mechanism for perceptual stability, increasing the apparent continuity of the complex environments we experience in everyday life. For example, stable scene perception can be actively achieved by the visual system through global serial dependencies, a special kind of serial dependence between summary statistical representations. Serial dependence occurs also between emotional expressions, but it is highly selective for the same identity. Ov