Yes. That is correct.
Comma Splice
How do I write this correctly?
Dr. Frankenstein flung a power switch, blue streamers of static electricity crackled about the table the creature gave a grunt and opened smoldering eyes.
What you have is three sentences indicating a chain of action. Therefore you need to punctuate with semi-colons. Use a semi-colon after switch, and use another one after table. Then the sentence will work nicely.
Okay, like this?
Dr. Frankenstein flung a power switch; blue streamers of static electricity crackled about the table; the creature gave a grunt and opened smoldering eyes.