I would be interested to know whether or not there is a relationship between stress and lack of sleep as well that could account for some of the memory issues r

I would be interested to know whether or not there is a relationship between stress and lack of sleep as well that could account for some of the memory issues related to stress. I was in a very stressful relationship in college that resulted also in a lot of sleep loss (although oddly I rarely had problems falling asleep probably because of exhaustion, just got way too little of it), strangely it didn't seem to affect me that much negatively at the time. I managed to get basically straight A's but I had to lose more sleep to do it and finally graduate and then go on to a masters sans relationship, but in the past 3 years I've still had a different and tenuous relationship with sleep and lately I feel like its started to affect me. Despite having a fairly low-stress life (current relationship is low stress, job is low stress, high-maintenance family is kind of taking care of itself), I'm noticing some of the symptoms referenced in the study, but it would have to be either a delayed reaction or more sleep-related than stress-related.