How do cats purr in words? - briefly
Cats purr by vibrating their larynx and diaphragm muscles at a rate of about 25 times per second. This creates a low-frequency sound that is perceived as soothing and comforting.
How do cats purr in words? - in detail
Cats purr using a complex interplay of physiology and behavior, facilitated by their unique vocal anatomy and neurological mechanisms. The process begins with the brain, specifically the hypothalamus, which sends signals via the vagus nerve to the laryngeal muscles in the throat. These muscles, under neural control, vibrate at a frequency of approximately 25 Hz, generating the characteristic purring sound. This neuromuscular activity is regulated by the cat's emotional state and can be triggered by various stimuli such as petting, feeding, or even when they are content or stressed. The rhythmic contraction and relaxation of these muscles produce a low-frequency hum, which is then amplified and modulated by the cat's respiratory system. Additionally, cats use purring as a form of communication, conveying a range of emotions from happiness and affection to distress or need for attention. This multifaceted vocalization underscores the sophisticated nature of feline communication and their deep-rooted ability to express themselves through sound.