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Psychological stress is a risk factor for the development of musculoskeletal pain of the head and neck; however, the basis for this relationship remains uncertain. This study tested the hypothesis that psychophysical stress alone was sufficient to alter the encoding properties of spinomedullary dorsal horn neurons and masseter muscle activity in male rats. Repeated forced swim conditioning increased...
Psychological stress and estrogen status are risk factors to develop painful temporomandibular joint disorders (TMJD); however, the neural basis for this relationship is not known. This study tested the hypothesis that repeated forced swim stress and estradiol treatment alter the phosphorylation of cAMP responsive element-binding protein (pCREB) in trigeminal subnucleus caudalis (Vc), the initial...
Bright light can cause ocular discomfort and/or pain; however, the mechanism linking luminance to trigeminal nerve activity is not known. In this study we identify a novel reflex circuit necessary for bright light to excite nociceptive neurons in superficial laminae of trigeminal subnucleus caudalis (Vc/C1). Vc/C1 neurons encoded light intensity and displayed a long delay (>10s) for activation...
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