A neuronal early response to leukotoxin could have the positive outcome of initiating cellular protection (Aroian and van der Goot, 2007), conceivably in association with noxious stimuli.
In some patients, the EMG was seen on the top of suppressed EEG signal in association with noxious stimulus (Fig. 4).
In humans, cerebellar areas around the vermis are activated during mental recall of emotional personal episodes [11], if a loved partner receives a pain stimulus [12], and during learning of the association between sensory stimuli and noxious events [13] [14].
Whether the association is directly related to the noxious stimuli of betel nuts or secondary to perturbation in visceral hypersensitivity needs to be clarified in future studies.
In other words, fear learning has to do with forming an association between a neutral stimulus and a noxious outcome (see also Dadds et al. 2001).
Although the association of SNPs rs563649 with sensitivity to noxious stimuli and morphine responses requires further confirmation in larger cohorts, our results provide strong evidence that this SNP has a far greater effect on receptor function than other currently known OPRM1 polymorphisms.
The authors did not observe any association between the polymorphism and either cold or heat noxious stimuli [ 52].
Second, the differential magnitude of association has prompted researchers to identify high-risk groups with clusters of cardiac-noxious depressive symptoms [ 6- 9].
57 We cannot exclude the possibility that residual confounding, such as from low intake of dietary fibre, shift or night time work, or exposure to pesticides, noxious fumes, dusts, or solvents, has influenced our estimates, though it is unlikely that residual confounding would have masked a strong association between job strain and cancer.
Osgood called these practices "noxious".
