Background: Prevalence rates of SAD suggested by previous studies have ranged from 1 to 12% depending on the diagnostic criteria used.
Impairment of AR was associated with the occurrence of SAD, suggesting that AR is one of the factors contributing to SAD.
Note: although there is limited evidence for citalopram in SAD, it is likely as effective as the other SSRIs, in contrast there are negative trials of fluoxetine in SAD suggesting it may be less effective than other SSRIs [ 382, 449].
Roughly 3/4 of tweets about Jackson's death that use the word "sad" actually express sadness, suggesting that sentiment analysis based on word usage is fairly accurate.
"You might ask yourself, 'Am I feeling sad naturally or because I've been around people who are feeling sad?'" Cacioppo suggests.
A wall of the installation is adorned with two emoticons, one happy, one sad, which suggests a brutally simplified inner state.
That sad fact suggests that the 2008 contest will likely go down in history for seeing to the effective demise of one of the most encouraging post-Watergate reforms, the creative use of public financing as an alternative to big-money donors.
Sad experience suggests that Washington bureaucrats, aided and abetted by Congress, are genetically incapable of turning away from any opportunity to meddle.
Neutral [1] and niche [10] based approaches are considered alternative theories in community ecology (but see [22] for reconciliation), particularly because the universal nature of SAD patterning suggests that invoking niche differentiation is unnecessary in explaining community structuring [1].
While in healthy controls, the forward connection from the task-active region in the OFC to the amygdala showed inhibitory influence, our results clearly demonstrate positive (excitatory) connectivity between OFC and the amygdala in SAD patients, suggesting an SAD-specific disruption of the prefrontal top-down regulation mechanism of amygdalar activation.
