W T Liberson

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The presence of an earlier latency of 12 msec of a somato-sensory evoked potential elicited by the stimulation of the median nerve at the wrist was discovered in 1963 by Liberson and Kim. They suggested its origin in the cervical spine or in the brain stem and possibly the cerebellum. Liberson, Voris and Uematsu recorded directly these potentials from the(More)
We recently demonstrated that there is a reciprocal relationship between the known brain wave rhythms (delta, 3.3 c/sec, 5 c/sec, theta, alpha, spindle, and beta) on the one hand, and the averaged evoked potential mid component latencies, on the other. In other words, the latter are closely related to the periods of the known brain wave frequencies. In this(More)
Discovery of P300 was preceded by a number of EEG findings related to expectancy of a stimulus, starting with a classical paper of Adrian and including the well known publication of Grey Walter. Our own studies published with Ellen in 1960 demonstrated the occurrence of positive waves occurring in the hippocampus at the time of expected but non-existing(More)
For a number of years we have been reporting a relationship between the mid components of the somato-sensory evoked potentials and basic brain waves. Recently we suggested that when the primary spike occurs it elicits a train consisting of beta, alpha, theta and delta single waves, originating at the same point in time and overlapping one with the other.(More)
A scheme for surgery in patients with avulsed roots is represented by a rat model whose left sciatic nerve was grafted upon the right sciatic nerve, the proximal end of the graft being introduced into the spinal cord white matter. Transcranial stimulation, EMG recording, HRP and histological studies proved that the communication between the brain and the(More)