The role of a single chapter in negative voting

Now I keep a close eye on my story ratings especially whenever I release a chapter (I mean who doesn't?) Now before I get any complaints on another blog post ranting and whining about negative views I would like to point out I will not be ranting/whining about it this time... I'm just curious... is there is a relationship between a release of what might be unliked/mixed chapter that is necessary for characterization and a sharp uptick of nopes?

Anypony notice this when writing your stories?

I personally prefer to get critiqued when I'm downvoted... not that anypony ever does that... heck I don't do it too often... though I tend to either not vote or upvote. You have to either royally tick me off(very rare) or have have such bad grammar that the story will be highly voted down anyway... and I avoid those types of stories to begin with... It's usually really recent stories that I end up downvoting along with a dozen others who happen to be reading at the same time as me... there's no need for me to 'join the crowd' and downvote a story just bc 80 bazillion already have... the writer already gets it.