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I just wanted to note the following. In preparing my tongue-cheek  
2054 retrospective (I'm unfortunately a sucker for bad puns,  
word-play,etc), I e-mailed a draft to my college roommate, who was a  
psych major (in the 1960's), and later a grad student in psych at a  
distinguished university department. He no longer "does" psychology,  
but he is both very adept at electronics and very well-informed. I  
remembered his working on equipment in the late 1960's that allowed  
measurement of how various stimuli were "received and recorded" by  
the brain. I asked him two things: (1) was the "measure  
pleasure/pain" claim plausible? and (2) was the miniaturization a  
possibility? I incorporated his response to the first question into  
my earlier HES submission, by adding language to the effect that  
psychologists "now" shy away from "pleasure/pain" termninology. 
 
His response to my second question was: 
 
You probably remember that I designed and built from readily  
available components a miniature biopotential transmitter that was  
about the size of a wristwatch.  That was 1970ish.  Today I could  
build one small enough to fit on the head of transducer (electrode).  
A commercial lab could easily make one that would be barely visible.  
So the ear-miniaturization idea is eminently do-able if not actually  
done. 
 
 
Bob Goldfarb 
 
 
 
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