Senses are physiological capacities of organisms that provide data for perception. The senses and their operation, classification, and theory are overlapping topics studied by a variety of fields, most notably neuroscience, cognitive psychology (or cognitive science), and philosophy of perception. The nervous system has a specific sensory system or organ, dedicated to each sense.
Human beings have a multitude of senses. Sight (ophthalmoception), hearing (audioception), taste (gustaoception), smell (olfacoception or olfacception), and touch (tactioception) are the five traditionally recognized. Whilst the ability to detect other stimuli beyond those governed by the traditional senses exists, including temperature (thermoception), kinesthetic sense (proprioception), pain (nociception), balance (equilibrioception), acceleration (kinesthesioception), and various internal stimuli (e.g. the different chemoreceptors for detecting salt and carbon dioxide concentrations in the blood), only a small number of these can safely be classified as separate senses in and of themselves. What constitutes a sense is a matter of some debate, leading to difficulties in defining what exactly a sense is.
Animals also have receptors to sense the world around them, with degrees of capability varying greatly between species. Humans have a comparatively weak sense of smell, whilst some animals may lack one or more of the traditional five senses. Some animals may also intake and interpret sensory stimuli in very different ways. Some species of animals are able to sense the world in a way that humans cannot, with some species able to sense electrical and magnetic fields, and detect water pressure and currents.
Famous quotes containing the word sense:
“I have heard with admiring submission the experience of the lady who declared that the sense of being perfectly well dressed gives a feeling of inward tranquility which religion is powerless to bestow.”
—Ralph Waldo Emerson (18031882)
“Your sense pursues not mine. Either you are ignorant,
Or seem so, craftily; and thats not good.”
—William Shakespeare (15641616)
“That children link us with the future is hardly news. . . . When we participate in the growth of children, a sense of wonder must take hold of us, providing for us a sense of future. Without the intimation of concrete individual futures, it is hardly worth bothering with social change and improvement.”
—Greta Hofmann Nemiroff (20th century)