I did laterality research for my dissertation work - my mentor was Joe Hellige who did a lot of work in laterality. (Ok this was late 80's/early 90's).
We excluded lefties for these reasons: Righties are pretty much lateralized with language right, VS left; and this comes from studies during neurosurgery in which surgeons would isolate one hemisphere from the other to map out language areas before going in removing tumors, etc. to try to minimize damage to language areas. They basically inject each carotid with a solution that would paralyze functions in the opposite hemisphere. When it comes to lefties, however, language was unpredictable. Sometimes it was all in the right, sometimes all in the left and quite bilateral. Since we were primarily interested in dual tasks that combined language with distal musculature (finger tip tapping) we wanted to be sure to maximize the probability that any shared or unshared resources would be hemisphere specific. Hence the need to exclude lefties because we could not do the invasive carotid artery injections ;-) And this may be at least basis for neuro studies excluding the lefties--unpredictable lateral distribution of functions. Annette Annette Kujawski Taylor, Ph.D. Professor, Psychological Sciences University of San Diego 5998 Alcala Park San Diego, CA 921210 [email protected] On Sat, Aug 12, 2017 at 10:00 PM, Teaching in the Psychological Sciences (TIPS) digest <[email protected]> wrote: > TIPS Digest for Sunday, August 13, 2017. > > 1. So, Will Have To Buy The Beatles "White Album" on DNA? > 2. W > > hy Do Neuroscientists Hate Left-handers? > 3. RE: Why Do Neuroscientists Hate Left-handers? > > Subject: Why Do Neuroscientists Hate Left-handers? > From: "Mike Palij" <[email protected]> > Date: Sat, 12 Aug 2017 14:10:30 -0400 > X-Message-Number: 2 > > Here's a factoid to toss out when reviewing the problems and > > limitation of contemporary neuroscience: > > Left-handers are not used in neuroscience research. > > I had assumed that they had been included and may > > have been analyzed separately from right handers > (and people who are ambidextrous) in the same > > way that monolinguals and bilinguals are analyzed > separately. > > For more on this point, here is an interview with > > leftie Paul Silva on HuffPo: > http://www.huffingtonpost.com/entry/neuroscience-research- > seriously-flawed-a-conversation_us_59835271e4b094ff5a3f0c7d# > > And don't forget that August 13 is International Left-Handers > Day. > > -Mike Palij (right handed) > New York University > [email protected] > > ---------------------------------------------------------------------- > > Subject: RE: Why Do Neuroscientists Hate Left-handers? > From: Miguel Roig <[email protected]> > Date: Sat, 12 Aug 2017 23:24:59 +0000 > X-Message-Number: 3 > > I recall reading studies on laterality which would often exclude subjects > with any degree of personal sinistrality (e.g., being left legged, or left > eared, and/or perhaps performing certain tasks with the left hand -writing > with the right hand but throwing a ball with the left) or familial > sinistrality. > > Miguel (right everything, but left eyed). > > From: Mike Palij [mailto:[email protected]] > Sent: Saturday, August 12, 2017 2:11 PM > To: Teaching in the Psychological Sciences (TIPS) > Cc: Michael Palij > Subject: [tips] Why Do Neuroscientists Hate Left-handers? > > > > Here's a factoid to toss out when reviewing the problems and > limitation of contemporary neuroscience: > > Left-handers are not used in neuroscience research. > > I had assumed that they had been included and may > have been analyzed separately from right handers > (and people who are ambidextrous) in the same > way that monolinguals and bilinguals are analyzed > separately. > > For more on this point, here is an interview with > leftie Paul Silva on HuffPo: > http://www.huffingtonpost.com/entry/neuroscience-research- > seriously-flawed-a-conversation_us_59835271e4b094ff5a3f0c7d# > > And don't forget that August 13 is International Left-Handers > Day. > > -Mike Palij (right handed) > New York University > [email protected]<mailto:[email protected]> > > > --- > > You are currently subscribed to tips as: [email protected]<mailto:roigm > @stjohns.edu>. > > To unsubscribe click here: http://fsulist.frostburg.edu/u?id=1632838. > 7e62b84813297f170a6fc240dab8c12d&n=T&l=tips&o=51192 > > (It may be necessary to cut and paste the above URL if the line is broken) > > or send a blank email to leave-51192-1632838. > [email protected]<mailto: > leave-51192-1632838.7e62b84813297f170a6fc240dab8c...@fsulist.frostburg.edu > > > > > > --- > > END OF DIGEST > > --- > You are currently subscribed to tips as: [email protected] > To unsubscribe click here: http://fsulist.frostburg.edu/u?id=13534. > 4204dc3a11678c6b1d0be57cfe0a21b0&n=T&l=tips&o=51195 > or send a blank email to leave-51195-13534.4204dc3a11678c6b1d0be57cfe0a21 > [email protected] > --- You are currently subscribed to tips as: [email protected]. 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