Most labs optimize their research to study a single sensory modality, and this has facilitated a broad understanding of both visual and auditory processing within the brain. But in the natural world, brains are faced with a mixture of sensory cues from multiple modalities. How are these diverse streams of information combined? Previous studies have shown that brains use correlations in space and time between different sensory cues to optimise this process. This is important for healthy brain function: schizophrenia, autism spectrum disorder, and aging are all associated with deficits in multisensory integration. This is particularly prominent for audiovisual integration—combining auditory and visual signals—perhaps because of its role in social communication. For example, facemasks hinder conversation because you cannot combine lip movements with speech. However, it remains largely unclear how and where visual and auditory information are combined in the brain. This fundamental question drives research in the Coen Lab. Some of the techniques we use to answer these questions are described in more detail below.