Volume 39 Part 3 (2011) 707–718

In the Introduction, the second sentence of the second paragraph contains an error introduced by the publisher; ‘δ-opioid receptor’ should be ‘δ-receptor’. The correct sentence appears here.

The ionotropic receptors are composed of several families: glutamate receptors [NMDAR (N-methyl-D-aspartate receptor), AMPAR (α-amino-3-hydroxy-5-methylisoxazole-4-propionic acid receptor), kainate receptor and δ-receptor], trimeric P2X purinergic receptor channels, and a group of evolutionarily related pentameric (cysteine-loop) channels {nAchR (nicotinic acetylcholine receptor), GABAA/CR (γ-aminobutyric acid A/C receptor), 5-HT3R [5-hydroxytryptamine (serotonin) receptor] and GlyR (glycine receptor)}.