Research shows humans have remote touch “seventh sense” like sandpipers

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Research shows humans have remote touch “seventh sense” like sandpipers
https://www.eurekalert.org/news-releases/1105106

INTRO: A study by researchers at Queen Mary University of London and University College London has found that humans have a form of remote touch, or the ability to sense objects without direct contact, a sense that some animals have.

Human touch is typically understood as a proximal sense, limited to what we physically touch. However, recent findings in animal sensory systems have challenged this view. Certain shorebirds, such as sandpipers and plovers, use a form of “remote touch” to detect prey hidden beneath the sand (du Toit et al. 2020; de Fouw et al. 2016). Remote touch allows the detection of objects buried under granular materials through subtle mechanical cues transmitted through the medium, when a moving pressure is applied nearby.

The study in IEEE International Conference on Development and Learning (ICDL) investigated whether humans share a similar capability. Participants moved their fingers gently through sand to locate a hidden cube before physically touching it. Remarkably, the results revealed a comparable ability to that seen in shorebirds, despite humans lacking the specialized beak structures that enable this sense in birds... (MORE - details, no ads)
 
Remote touch allows the detection of objects buried under granular materials through subtle mechanical cues transmitted through the medium, when a moving pressure is applied nearby.
So...we touch stuff and it feels a certain way? As in the sand feels packed a bit differently when there's a cube buried in it? I'm not sure I get why this is a seventh sense or confined to us and shorebirds. It sounds an awful lot like just a good tactile sense.
 
Here's a PDF version of the paper that (for now) is accessible without sign-in...

Exploring Tactile Perception for Object Localization in Granular Media: A Human and Robotic Study
https://qmro.qmul.ac.uk/xmlui/bitstream/handle/123456789/110504/Chen Exploring Tactile Perception 2025 Accepted.pdf?sequence=2

It seems just to be extended awareness beyond the body's limits.
So...we touch stuff and it feels a certain way? As in the sand feels packed a bit differently when there's a cube buried in it? I'm not sure I get why this is a seventh sense or confined to us and shorebirds. It sounds an awful lot like just a good tactile sense.

The "seventh sense" stuff is just the usual hyperbole of a press release headline. The paper itself doesn't indulge in that, with this detection of objects via "mechanical reflections" being another refinement of, or sub-distinction in, the somatosensory system (like temperature perception).

With the vestibular system (balance) being the sixth sense candidate, a potential 7th sense slot is arguably already occupied by interoception.
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