pain articles
Why is the space environment technically referred to as weightlessness instead of true zero gravity?
What is the most frequently described initial feeling astronauts experience upon reaching orbit?
How quickly does the brain adapt to suppress the initial falling sensation?
What physical system's recalibration leads to space adaptation syndrome?
What common symptom related to fluid shifts is often described as feeling like having a head cold?
What visible physical changes result from the cephalad fluid shift in microgravity?
What structural change in the spine leads to frequent back pain for long-duration travelers?
How much taller can crew members temporarily grow during a mission due to spinal disc expansion?
If an astronaut sustained a fracture, what specific pain element caused by gravity would be absent in weightlessness?
What essential function does gravity provide that is necessary for keeping the body strong, despite also causing wear and tear?
What process converts a noxious stimulus, like intense heat, into an electrical signal at the peripheral nerve endings?
Which nociceptor fibers are characterized by having unmyelinated axons, resulting in slower conduction speed?
What is the spinal cord phenomenon characterized by temporal summation, where a neuron's response grows larger with repetitive low-frequency input to C-fibers?
Which brain regions are primarily implicated in processing the affective (unpleasantness) and cognitive-evaluative dimensions of pain experience?
What crucial mechanism underlying chronic pain involves the nervous system's ability to change its structure and function, often leading to hypersensitivity?
What system's chronic dysregulation, often due to stress or trauma, can lead to peripheral sensitization by activating immune cells near sensory nerve endings?
Which ion channel is identified as a key component in converting noxious thermal energy (heat) into an electrical signal sent toward the CNS?
According to the Gate Control Theory, which type of input helps to close the spinal 'gate' and suppress the flow of pain signals?
In neuropathic pain, what common characteristic makes management challenging compared to acute pain responsive to traditional medications?