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Rebecca Jarvis speaks with Dr. David Langer about "brain freeze, or a moment when you just can't recall something important -- like the one Rick Perry had in a GOP debate -- and how to avoid it.
Read More »Rebecca Jarvis speaks with Dr. David Langer about "brain freeze, or a moment when you just can't recall something important -- like the one Rick Perry had in a GOP debate -- and how to avoid it.
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