Originally Posted by: RazboSometimes my brain inserts notes that aren't actually there just because the preceding sequence suggests it.
You might be interested in this thread:
http://www.guitartricks.com/forum/showthread.php?p=254024#post254024
They did an experiment to see if people would automatically fill in notes to a scale if they were left out. It was to test cultural differences in music and see if different cultures would include or leave out different tones.