In daily life, we often see many people wearing headphones, listening to music intently while walking or cycling. But did you know that improper use of headphones might one day make you a deaf person without realizing it? Are the consequences really that serious?
The ear is the organ responsible for receiving sound in the human body. Sound waves enter the outer ear canal and vibrate the eardrum, then travel through the auditory ossicles to the inner ear, stimulating the auditory nerve receptors in the cochlea to produce corresponding electrical excitation. The auditory nerve fibers then transmit the signal to the brain's auditory center, where the information is integrated and analyzed to form a complete sound perception. Any malfunction in any link of this auditory pathway will affect hearing. Especially the inner ear, which is the first station of neural information reception, is complex and delicate, hence also known as the "labyrinth". On its top are cilia like receiving antennas, where auditory neurons - hair cells reside, playing a crucial role. Hair cells carry a heavy responsibility, but they are delicate by nature. Once damaged, they are prone to atrophy and degeneration, and once dead, they cannot regenerate. When external sound stimulation is too strong or lasts too long, it will trigger self-protective measures, resulting in reduced sensitivity to sound reception, medically known as "auditory fatigue phenomenon". When using headphones, the louder the volume is turned up to hear clearly in noisy environments, the greater the damage to auditory receptors, creating a vicious cycle. At the same time, harsh sounds can cause vasoconstriction and spasms in blood vessels supplying the inner ear, leading to local ischemia and the production of harmful metabolites, exacerbating auditory neuron damage. If no timely measures are taken, your precious hearing will gradually deteriorate over time. Once it exceeds a certain limit, you may one day find yourself entering a lonely silent world. Isn't this consequence serious enough?
Here are some tips for friends who often use headphones: If you have already experienced significant hearing loss on one side due to improper headphone use, be particularly careful when crossing the road, as a large hearing difference between the two ears can affect the identification of sound direction; avoid using drugs with ototoxicity, such as certain antibiotics (kanamycin, gentamicin, neomycin), antipyretic analgesics, and diuretics; it's best not to wear headphones while walking or cycling on the road, as this can distract attention from the surrounding situation and easily lead to traffic accidents.