Deux parcours entre art et sciences

Alex Cayco Gajic is a junior professor at the Group for Neural Theory. She is interested in how different brain regions coordinate for flexible motor control.

Project:
We try to understand the learning dynamics that structure the emergence of auditory perception, particularly of speech. For this, the laboratory relies on in-vivo (ferret hearing) and in-silico (artificial networks of the latest generations) models.

About the HOPLA project

Artists have been doing experiments on vision longer than neurobiologists. Some major works of art have provided insights as to how we see; some of these insights are so fundamental that they can be understood in terms of the underlying neurobiology.  For example, artists have long realized that color and luminance can play independent roles in visual perception.

Language is the most powerful social tool any species has evolved - we can use it to share any idea we can think of with the minds of those around us: from poetry, Shakespeare, and physics, to internet memes it underpins what defines us as a species. But despite centuries of thought and study we still have very little idea of how and why language evolved. As a field primatologist at the University of St Andrews, I have spent 15 years living and working with wild apes in the rainforests and mountains of Uganda.

When speech is heard in the presence of background sound, or when hearing is impaired, the sensory information at the ear is often too ambiguous to support speech recognition by itself. In such circumstances, knowledge-guided processes that help to interpret and repair the degraded signal are required. Such recruitment of cognitive processes is probably why listening in noise “feels” effortful, even when intelligibility is high. Such effort can be aversive, and the goal of making listening less effortful is increasingly recognized as important.

Discovering the universal features of human musicality is a prerequisite for explaining the biological and cultural evolution of music. What is universal about the psychological representation of music, and what varies? In this talk I will present analyses of the Natural History of Song Discography, which includes songs recorded in 86 mostly small-scale societies, and experiments using these songs. We find that acoustical forms of songs are predictive of their primary behavioral functions across cultures.