Christophe Mulle is a cellular neurobiologist with expertise in electrophysiology of synaptic transmission and an international leader in studies on glutamate receptors and hippocampal synaptic plasticity. He was among the first to identify and characterize functional nicotinic receptors in the mammalian brain while working in the laboratory of Jean-Pierre Changeux at the Pasteur Institute. He then generated knock-out mice for KAR subunits at the Salk Institute in the laboratory of Steve Heinemann, which have proven to be instrumental for understanding the function of these elusive glutamate receptors in synaptic function and plasticity.