Definition of sense

There is no firm agreement among neurologists as to the number of senses because of differing definitions of what constitutes a sense. One definition states that an exteroceptive sense is a faculty by which outside stimuli are perceived.The traditional five senses are sight, hearing, touch, smell, taste: a classification attributed to Aristotle.Humans also have at least six additional senses (a total of eleven including interoceptive senses) that include: nociception (pain), equilibrioception (balance), proprioception & kinesthesia (joint motion and acceleration), sense of time, thermoception (temperature differences), and in some a weak magnetoception (direction)

One commonly recognized catagorisation for human senses is as follows: chemoreception; photoreception; mechanoreception; and thermoception. Indeed, all human senses fit into one of these four categories.