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Beta fibers, specifically A-beta fibers, are primarily associated with the sense of touch. They are myelinated fibers that conduct impulses rapidly, and they play a crucial role in transmitting information about tactile sensations such as pressure, vibration, and fine touch from the skin to the central nervous system. This rapid conduction is vital for the perception of touch, allowing for a quick response to stimuli.

In contrast, pain is generally associated with C fibers, which are unmyelinated and transmit slow, dull pain sensations. Temperature sensations are carried by a separate set of fibers, including A-delta fibers (for sharp, cold sensations) and C fibers (for warm sensations). Proprioception, which refers to the awareness of body position and movement, is primarily handled by specialized proprioceptive fibers that are different from the A-beta fibers responsible for touch. Therefore, the association of beta fibers with the sense of touch highlights their role in conveying important tactile information efficiently and rapidly.