Do Serotonin Reuptake Inhibitors Affect Cognitive Function?

There's been a lot of work in the field examining how serotonin affects cognition but it's mainly been done acutely which is single dose or for short term seven day administration. But as we know patients take these drugs for months and often even years so because of this we really need to understand the longer term effects more. People also say it takes a few weeks before they begin to feel better after they start taking them so that's important.