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The acoustic reflex (also known as the stapedius reflex, [1] stapedial reflex, [2] auditory reflex, [3] middle-ear-muscle reflex (MEM reflex, MEMR), [4] attenuation reflex, [5] cochleostapedial reflex [6] or intra-aural reflex [6]) is an involuntary muscle contraction that occurs in the middle ear in response to loud sound stimuli or when the person starts to vocalize.
In many people with hyperacusis, an increased activity develops in the tensor tympani muscle in the middle ear as part of the startle response to some sounds. This lowered reflex threshold for tensor tympani contraction is activated by the perception/anticipation of loud sound, and is called tonic tensor tympani syndrome (TTTS). In some people ...
Cross-section through the spiral organ of Corti at greater magnification, showing position of the hair cells on the basement membrane. The organ of Corti is located in the scala media of the cochlea of the inner ear between the vestibular duct and the tympanic duct and is composed of mechanosensory cells, known as hair cells. [2]
The stapes transmits sound waves to the inner ear through the oval window, a flexible membrane separating the air-filled middle ear from the fluid-filled inner ear. The round window , another flexible membrane, allows for the smooth displacement of the inner ear fluid caused by the entering sound waves.
Luckily, his mom helped rub his ear right after taking this video, so he didn't have to wait too long with the annoying sensation. Related: 5-Legged Cat Makes Her TikTok Debut and People Are Enchanted
Cats are the ultimate “clean freaks” of the animal kingdom. They come equipped with a sandpaper-like tongue meant to ensure that every inch of their luxurious fur remains spotless.
A cat's tail may swing from side to side, and if this motion is slow and "lazy", it generally indicates that the cat is in a relaxed state. Cats will twitch the tip of their tails when hunting, alert, or playful. A stalking domestic cat will typically hold its tail low to the ground while in a crouch, and twitch it quickly from side to side.
That cat is more of a daredevil than my own, four-legged ones. He leaps around her house, balancing on bannisters and traversing high ledges. Animals can be extremely adaptive to limb differences ...