    FIG. 5. Microwave power distribution in a forehead model neglecting
            resonance effects and considering only first reflections
            (from Nieset et al. (5), modified).

                 |    REFLECTED                    ABSORBED
              1.5|--- FREQUENCIES                  FREQUENCIES
                 |                   * *
                 |                  *    *         * = 10% OF INCIDENT
     CENTIMETERS |Cortical         *                       POWER
                 |Tissue                    *
                 |                *                @ = 20% OF INCIDENT
              1.0|---                         *            POWER
                 |                *
                 |                *              *
                 |Bone
                 |               *                 *
                 |
              0.5|---           *      @  @   @       *
                 |Muscle     *    @               @
                 |Fat          @                     @    *
                 |Skin       @                          @ @
                0|-----------|-----------|-----------|-----------|---
                 0          100        1000        10000       100000
                            FREQUENCY (mc)

    FIG. 6. Area most sensitive to electromagnetic energy (shaded portion).

                                *   *  * * * *
                            *                    *
                          *                        *
                         * *       ::::::           *
                          *  *   :::::::::          *
                         *  O  *  ::::::::          *
                       *              * *           *
                         *               *          *
                         *               *         *
                          ***         **          *
                         *        *             *
                           *  * * *             *
                                  *              *
                                  *               *
                                   * * * * * * * * *

                                    -38-