Is there any scientific data showing one can learn while sleeping? Time is short in the days of learning for me but I like listening to lectures and case studies about code in my field. I've thought about getting a Bluetooth Sleep Headphone to possibly listen to these lectures and studies while sleeping. 

However, upon my research I've only be able to find on this site one a Q&amp;A without an answer: "Can one learn whilst sleeping? Can one solidify a memory &amp; study for exams by listening to recordings while asleep?". 

In my research and Google kungfu I've seen questionable sites that indicate as yes and some no but I was wondering have there been any creditable university case studies that show wether this is factually possible?
I don't think that it is possible to learn new facts while sleeping, but it is certainly possible to reactivate certain memories during sleep and thereby affect the probability of those memories being retained. 

In one study, participants learned a visuospatial task while smelling an odour. They were better at remembering how to perform the task if they were subsequently exposed to the same odour during sleep.


  Reactivating Memories during Sleep by Odors: Odor Specificity and
  Associated Changes in Sleep Oscillations, Julia S. Rihm,  Susanne
  Diekelmann,  Jan Born and  Björn Rasch
  https://www.mitpressjournals.org/doi/abs/10.1162/jocn_a_


In another study, participants had to learn spatial locations for some objects and a sound associated with each object. The sounds associated with some of these objects were played back to them during sleep. Upon awakening, they were better at recalling the locations of objects whose sounds they had heard during sleep.


  Strengthening Individual Memories by Reactivating Them During Sleep,
  John D. Rudoy, Joel L. Voss, Carmen E. Westerberg, Ken A. Paller
  https://science.sciencemag.org/content/326/5956/1079


In another study, participants remembered melodies better if they later heard those melodies during sleep.


  Cued memory reactivation during sleep influences skill learning James
  W Antony, Eric W Gobel, Justin K O'Hare,  Paul J Reber&amp; Ken A Paller
  https://www.nature.com/articles/nn.3152