Patent diagrams by Donald Spector from 1988 and 1999 respectively:
The top one is for an inflatable doll that expands when taken out of its test tube. The bottom one is for something called the Mommy Box that provided a ‘soothing’ video link to mother for distressed babies. These diagrams make a lot more sense in context, of course, but with all the mimicry going on (baby <> doll, real mom <> video mom), it’s not surprising that the initial effect is highly disconcerting.
More bogus/silly info graphics here. More on unintended consequences of creepy robot doubling here.