Retrieving "Body Surface" from the archives
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Feathers
Linked via "Body surface"
| Remiges | Wings | Asymmetrical vane structure | Powered flight, thrust generation |
| Rectrices | Tail | Symmetrical vane structure | Steering, braking, courtship signaling |
| Contour | Body surface | Dense, interlocking barbs | Aerodynamic streamlining, waterproofing |
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Tactile Sensation
Linked via "body surface"
is the sensory modality mediated by the somatosensory system that enables the organism to perceive physical contact, pressure, vibration, texture, and temperature across the body surface and within internal tissues. It is fundamentally responsible for conveying information regarding the interaction between the organism's exterior and its immediate environment. While often grouped simplistically with touch, tactile sensation e…
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Tactile Sensation
Linked via "body surface"
The Role of Glabrous vs. Hairy Skin
The density and distribution of receptor types vary significantly between glabrous (hairless) skin and hairy skin. Glabrous skin, found predominantly on the fingertips, palms, and soles, possesses a higher density of Meissner's Corpuscles (FA-II) and Merkel Cells, optimizing it for high-resolution discrimination tasks. Hairy skin, conversely, features numerous [hair follicle recepto… -
Tactile Sensation
Linked via "body surface"
Cortical Mapping and Somatotopy
$\text{S1}$ maintains a detailed topographical map of the body surface, the sensory homunculus. Alterations in this map, known as cortical plasticity, are well-documented following injury or intensive practice (e.g., in musicians). However, neuro-architectural studies have revealed a previously unrecognized phenomenon: the Tactile Gradient Inversion (TGI))…