    .....................................................................

    KEYWORDS; BIOTELEMETRY ELECTROPHYSIOLOGY SENSORS
    MICRO-CIRCUITRY

    ABSTRACT; Biopotential recordings of human psycho-
    physiological parameters are hampered in many field settings,
    and some laboratory and clinic settings, by the sensor
    technology.

    [Eleanor White's comment:  Take SPECIAL NOTE of that
    word "PSYCHO-"... that has great significance for neuro-
    electromagnetic experimentees!]

    Conventional electrodes which tether the subject to the
    signal amplification and recording equipment, are cumbersome
    to apply, often interfere with normal movements, are easily
    dislodged, and induce electrical noise due to the movement of
    the electrode wires carrying low level signals.

    This project seeks to design essentially wireless electrode
    recording systems that use radio frequency telemetry to
    transmit the biopotential signal from the recording site to a
    body-worn transceiver and then to a remotely located
    receiver.

    [Eleanor White's comment:  That means, radio signals
    THROUGH THE FLESH to an externally worn transceiver.  The
    only difference between this UNclassified project and the
    involuntary neuro-electromagnetic experimentees is distance,
    which can be overcome with time.]

    The present subcontractor has developed transceiver and
    receiver technology that will be reviewed and customized as
    needed for the present application. The focus here will be on
    developimg a generic design for the sensor subsystem
    ("telectrodes") to include the transducer interface with the
    skin, miniaturized amplifier and filter circuitry, an optimal
    connection between the transducers providing differential
    inputs to the amplifier, a longlasting but compact battery,
    and transmitter.

    Phase I will consist of a design specification, development
    of a bench-top engineering prototype, design trade-off
    studies using the prototype, and the delineation of a detail
    design.

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