That echo you get talking on a cell phone does more than drive you nuts. It can actually stop your brain from forming words. Anthony tells us what happens inside your head to make this irritating phenomenon happen.

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"Why that echoey phone feedback drives us nuts"
"Perhaps you've been chatting on your cell phone or Skyping with a friend when, suddenly, you hear your voice echoed on the other end. It's a strange feeling, right?"

"Shut up! Speech jammer among 2012 Ig Nobel winners"
"The SpeechJammer, a device that disrupts a person's speech by repeating his or her own voice at a delay of a few hundred milliseconds, was named Thursday as a 2012 winner of the Ig Nobel prize - an award sponsored by the Annals of Improbable Research magazine for weird and humorous scientific discoveries."

"SpeechJammer: A System Utilizing Artificial Speech Disturbance with Delayed Auditory Feedback"
"In this paper we report on a system, "SpeechJammer", which can be used to disturb people's speech. In general, human speech is jammed by giving back to the speakers their own utterances at a delay of a few hundred milliseconds."

"Neural mechanisms underlying auditory feedback control of speech."
"The neural substrates underlying auditory feedback control of speech were investigated using a combination of functional magnetic resonance imaging (fMRI) and computational modeling."

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