TABLE 1.
Contrast in the effects of depression and nicotinic acetylcholine receptor agonists on intrinsic functional network activity
Activity in Depression | Effect of nAChR agonists | |
---|---|---|
Default Mode Network (DMN) | ↑ Activity | ↓ Activity |
Central-Executive Network (CEN) | ↓ Activity | ↑ Activity |
Salience Network (SN) | ↑ Activity | ↓ Activity (Anterior insula) |
The table describes a summary of activity of brain regions within each network across tasks and does not reflect resting state functional connectivity. Note that there are less data on the effects of nAChR agonists on salience network activity. Although a meta-analysis reported that nAChR agonists decrease activity in the anterior insula,(Sutherland et al., 2015) they did not find evidence for an effect on other SN regions such as the amygdala.