/blog/en/tags/sound/Recent content in Sound on 飛脚 / HIKYAKUHugoenWed, 13 May 2026 00:00:00 +0000/blog/en/posts/sound-vagus-nerve-parasympathetic/Wed, 13 May 2026 00:00:00 +0000/blog/en/posts/sound-vagus-nerve-parasympathetic/<p>When choosing a speaker, most people look at specs. Frequency range, output, driver materials. That&rsquo;s valid. But let&rsquo;s think a little deeper about what those specs ultimately affect.</p> <p>Sound is vibration in air. The speaker&rsquo;s diaphragm pushes air, and those waves reach the eardrum. So far, this is physics. But beyond the eardrum lies <strong>neuroscience</strong>.</p> <h2 id="from-the-eardrum-to-the-vagus-nerve">From the eardrum to the vagus nerve</h2> <p>Sound waves vibrate the eardrum and are converted to electrical signals in the cochlea. These signals travel via the auditory nerve to the brainstem.</p>