“…Muscarinic and nicotinic cholinergic receptors modulate neuronal function in the hippocampus and parietal cortex (Xiang, Huguenard, & Prince, 1998), but the nicotinic receptor (nAChR) is especially important in regulating fast synaptic transmission (Alkondon, Pereira, Eisenberg, & Albuquerque, 2000) and is predominantly expressed in the parietal cortex (Mentis et al, 2001). The parietal cortex is an important cortical focus of a distributed neural network of brain regions controlling different aspects of visuospatial attention (Corbetta, Kincade, Ollinger, McAvoy, & Shulman, 2000;Posner & Petersen, 1990).…”