Good point about common dream themes. Iām open to the possibility of shared dreams due, in part, to personal experience. Also, Biblically speaking, it is said that God will give us dreams & visions (Joel 2:28). If God can give a person a dream, I would assume God could give the same dream or message to multiple people. I donāt know if other spirits influence our dreams or not. However, we do know that certain themes are common amongst people, & as you suggest, this is likely due in large part to shared feelings or experiences. I donāt think that every dream is from God, but I do believe that some are.
For me, ways in which I would attempt to differentiate between ordinary theme sharing & actual dream sharing include the following:
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Are these themes common amongst people in general? What about within my culture or community? Do these individuals commonly dream of these things? Are the themes odd?
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Has any recent event known to the dreamers possibly triggered the symbolism in said dream? Were the dreamers recently discussing a topic that might have triggered the shared dream?
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Are the dreamers sharing only large theme elements in common or are they sharing details in common? Are the details unusual? How many details are they sharing?
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Did the dream turn out to appear prophetic? Did it appear to reveal a hidden truth or future event?
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Did the dreams occur at the same time? How close together did the dreams occur?
Your point about the Broca & Wernickeās areas being suppressed during sleep makes sense! I can see how that might lead our brains to interpret the experience as struggling during a test. Interesting insight!
I have read the same regarding the part of the brain that handles reading. However, I find that I can (at times, at least) read in my sleep. I donāt know that Iāve read anything of great length, but I have read- or so I recall. However, it seems that Iāve also seen distorted writing in my sleep.
I also experience lucid dreaming, which indicates that parts of my brain which should be at rest during sleep are not always subdued. Unfortunately, I also have panic attacks in my sleep complete with high heart rate and blood pressure. It seems my brain & body arenāt experiencing normal rest states.
I have also loved reading & writing since I was a child. I tend to be more skilled at Creative Composition & English than in many other areas. Perhaps, the parts of my brain which interpret speech are more active or capable in a dream state, as well.
Your point still stands, as the areas of the brain involved in reading might normally be suppressed during dreams. Iām just sharing the novelty of my own experience. Apparently, the suppression of these areas isnāt universal for all folks all of the time. Yet, I donāt think Iām immune to it. I do recall dreams of struggling in class, as well. I still have these dreams in spite of being a college graduate who is no longer a student. In fact, I had one last night.