"White noise" was played into the subject's ears through headphones.
“白色噪音”通过耳机被送进实验对象的耳朵里。
《柯林斯英汉双解大词典》
2
Playing sounds into the right ears (stimulating the left hemisphere) of volunteers was more likely to wake them up than if the noises were played into their left ear.
与向志愿者的左耳播放噪音相比，向他们的右耳播放噪音（刺激大脑左半球）更有可能唤醒他们。
3
One beautiful morning, I awoke to find myself changed into a donkey—long ears, gray coat, even a tail!