To test if such spontaneous cataplexy is similar to chocolate-induced cataplexy, we next examined the activation of the nucleus accumbens (NAc), a putative trigger site for chocolate-induced cataplexy [7], using a phosphorylated form of the extracellular signal-regulated kinase (pERK) as a marker of cellular activation [7]. Here, EIF2AK3 is linked to Cataplexy.