|  
                               Hearing 
                                
                             | 
                             
                               Timing 
                             | 
                            Source | 
                          
                           
                            "For at the moment the sound 
                              of your greeting reached my ears, the infant in 
                              my womb leaped for joy". 
                             | 
                            Before birth | 
                            Luke 1:44 | 
                          
                           
                            | The fetus responds to sound. | 
                            10th - 14th weeks after conception | 
                            Nijhuis/Hepper, p 133 | 
                          
                           
                            | "Blink-startle" responses 
                              to vibroacoustic stimulation have been observed. | 
                            22nd & 23rd weeks after conception | 
                            Birnholz & Benacerraf, p 516 | 
                          
                           
                            | The fetus apparently hears some sounds 
                              in utero. | 
                            22nd - 24th weeks after fertilization | 
                            Williams, p 169 | 
                          
                           
                            | Changes in fetal heart rate, eye blinks, 
                              and movements have occurred in response to sounds. | 
                            Not available | 
                            Nijhuis/Hepper, p 137 | 
                          
                           
                            | Evidence is growing that the fetus 
                              can hear voices in the womb. | 
                            Not available | 
                            Fifer & Moon, p 430 | 
                          
                          
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