I think it was the teething— molars erupting through the gum that wracked the first two of my daughters with such new pain, they refused food or milk or water. After the seizures, the doctor concurred: likely, dehydration, followed by momentary chemical imbalance. Then the transient, excessive firing of neurons in the brain. Months of fearful testing, every little twitch and blanket-kick in the crib constricting my throat and sealing my tongue in the tomb of my mouth. Decades later, considering the wonder of them from this space, I recall the first tremors and my helplessness; and light pouring in the windows, charged with its own electricity.