Should ESP be listed here?
If it's "extra-sensory", then it's by definition not one of the senses, isn't it? Even if it really existed, it would be listed somewhere else. I'd list it as a belief of its own, just like religions, and maybe with a link from pseudoscience. --Lee Daniel Crocker
I specifically wrote "physiological" senses in the opening sentence, to prevent people from trying to include ESP. It doesn't belong here, as this article defines a sense as having a receptor neuron, and a corresponding interpretive region in the frontal cortex. I think it can be safely said that ESP has neither. - MMGB
That's a reasonable link, too, depending on how you treat perception.