Barnes TL, Ahuja M, MacLeod S, Tkatch R, Albright L, Schaeffer JA, Yeh CS. Loneliness, social isolation, and all-cause mortality in a large sample of older adults. J Aging Health. 2022 Oct;34(6-8):883-92. doi: 10.1177/08982643221074857
Finlay J, Esposito M, Li M, Kobayashi LC, Khan AM, Gomez-Lopez I, Melendez R, Colabianchi N, Judd S, Clarke PJ. Can neighborhood social infrastructure modify cognitive function? a mixed-methods study of urban-dwelling aging Americans. J Aging Health. 2021 Oct;33(9):772-85. doi: 10.1177/08982643211008673
Walker EA, Picker MJ, Granger AL, Dykstra LA. Effects of opioids in morphine-treated pigeons trained to discriminate among morphine, the low-efficacy agonist nalbuphine, and saline. J Pharmacol Exp Ther. 2004 Jul;310(1):150-8.
Allen RM, Granger AL, Dykstra LA. The competitive N-methyl-D-aspartate receptor antagonist (-)-6-phosphonomethyl-deca-hydroisoquinoline-3-carboxylic acid (LY235959) potentiates the antinociceptive effects of opioids that vary in efficacy at the mu-opioid receptor. J Pharmacol Exp Ther. 2003 Nov 1;307(2):785-92.
Allen RM, Granger AL, Dykstra LA. Dextromethorphan potentiates the antinociceptive effects of morphine and the delta-opioid agonist SNC80 in squirrel monkeys. J Pharmacol Exp Ther. 2002 Feb 1;300(2):435-41.