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-