I think yes. Experiments on animals and human demonstrated clearly over the past decade or so that if you sleep less you will be more susceptible to memory and mood issues after the period of sleep eprivation. For example, your ability to solve math problmes or puzzles problems will be affected if you sleep less. Not only solving problems, but also the ability to remember things, the ability to respond to a task, your ability to cope up with life difficulties, all of these will be acfected if you don’t sleep well. So there are range of memory and brain problmes will be affected if you don’t sleep well.
If you need more elaboration please let me let me know and I will be happy to elaborate.