Combined blockade of serotonergic and muscarinic transmission disrupts the anterior thalamic head direction signal.

Head direction (HD) cells have been speculated to be part of a network mediating navigational behavior. Previous work has shown that combined administration of serotonergic and muscarinic antagonists eliminates hippocampal theta activity and produces navigational deficits more severe than blockade of either neurotransmitter system alone. The authors sought to assess this effect on the directional characteristics of HD cells.

Liberty and justice for all? Implications of exposure to the U.S. flag for intergroup relations.

Three studies examined the implications of nationalistic ideologies and exposure to the U.S. flag for the activation of egalitarian concepts and outgroup hostility.