Fig. 2From: Activity-dependent plasticity of electrical synapses: increasing evidence for its presence and functional roles in the mammalian brainActivity-dependent plasticity of electrical transmission across the mammalian brain. a Both Cx36 and GluA (a marker of glutamatergic transmission) are expressed (light filled background) broadly across the rat brain. Darker areas represent areas with higher Cx36 expression. b Activity-dependent modification of electrical transmission has been currently reported in only four areas (TRN, thalamic reticular nucleus; HY, hypothalamus; IO, inferior olive)Back to article page