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Start here => Games => Topic started by: bodie on February 17, 2013, 03:24:49 PM

Title: Are you a lefty or a righty?
Post by: bodie on February 17, 2013, 03:24:49 PM
Left handed, right handed or ambidextrous?

Just curious.  Me, i am a lefty.
Title: Re: Are you a lefty or a righty?
Post by: "couldbecousin" on February 17, 2013, 03:27:07 PM
  I am very much right-handed.  My boss is left-handed yet somewhat ambidextrous.  :orly:
Title: Re: Are you a lefty or a righty?
Post by: P7PSP on February 17, 2013, 04:20:49 PM
Right. Lefties are sinister.  :laugh:
Title: Re: Are you a lefty or a righty?
Post by: bodie on February 17, 2013, 04:26:34 PM
just read that quickly as 'spinster'   :laugh:
Title: Re: Are you a lefty or a righty?
Post by: Parts on February 17, 2013, 04:31:06 PM
I'm a right handed
Title: Re: Are you a lefty or a righty?
Post by: "couldbecousin" on February 17, 2013, 04:37:23 PM
just read that quickly as 'spinster'   :laugh:

  I am a spinster.  :angel:  PPK is one too.  :laugh:
Title: Re: Are you a lefty or a righty?
Post by: skyblue1 on February 17, 2013, 05:58:46 PM
just read that quickly as 'spinster'   :laugh:

  I am a spinster.  :angel:  PPK is one too.  :laugh:
A spinster, or old maid, is an older, childless woman who has never been married.

For a woman to be identified as a spinster, age is critical. A "spinster" is not simply a "single" woman, but a woman who has not formed a human pair bond by the time she is approaching or has reached menopause and the end of her reproductive lifespan.

"If someone is a spinster, by implication she is not eligible (to marry); she has had her chance, and been passed by," explains Robin Lakoff in Language and Woman's Place. "Hence, a girl of twenty cannot be properly called a spinster: she still has a chance to be married."

"In modern everyday English," the New Oxford American Dictionary says, "spinster cannot be used to mean simply 'unmarried woman'; it is now always a derogatory term, referring or alluding to a stereotype of an older woman who is unmarried, childless, prissy, and repressed." The title "spinster" has nevertheless been embraced by feminists like Sheila Jeffreys, whose 1985 book The Spinster and Her Enemies defines spinsters simply as women who have chosen to reject sexual relationships with men.
^
PPK doesnt qualify
Title: Re: Are you a lefty or a righty?
Post by: "couldbecousin" on February 17, 2013, 06:31:22 PM
just read that quickly as 'spinster'   :laugh:

  I am a spinster.  :angel:  PPK is one too.  :laugh:
A spinster, or old maid, is an older, childless woman who has never been married.

For a woman to be identified as a spinster, age is critical.  A "spinster" is not simply a "single" woman, but a woman who has not formed a human pair bond by the time she is approaching or has reached menopause and the end of her reproductive lifespan.

  Ooooo, I love that definition! :cbc: That  ~TOTALLY~  applies to me!
Title: Re: Are you a lefty or a righty?
Post by: "couldbecousin" on February 17, 2013, 06:32:42 PM
just read that quickly as 'spinster'   :laugh:

  I am a spinster.  :angel:  PPK is one too.  :laugh:
^
PPK doesnt qualify

  I know, I just like to bust his chops.  >:D
Title: Re: Are you a lefty or a righty?
Post by: bodie on February 17, 2013, 06:33:04 PM
oh where are all the lefty's :'(
Title: Re: Are you a lefty or a righty?
Post by: Jack on February 17, 2013, 06:48:53 PM
Right.
Title: Re: Are you a lefty or a righty?
Post by: skyblue1 on February 17, 2013, 06:53:56 PM
my predominate hand is my right

I use both hands very well in both of my crafts though
Title: Re: Are you a lefty or a righty?
Post by: Bastet on February 17, 2013, 07:56:28 PM
I am right handed and right footed. I can actually write with my right foot. It is a bit painful to clutch the pencil in my toes, for too long, though.

Edit: Holy fuck is my brain playing tricks on me. I thought I put right but it came out as left initially.  :dunno:

 
SCUMBAG BRAIN!   :grrr:
Title: Re: Are you a lefty or a righty?
Post by: odeon on February 18, 2013, 12:01:17 AM
Righty right.
Title: Re: Are you a lefty or a righty?
Post by: midlifeaspie on February 19, 2013, 10:40:58 AM
I type with both hands
Title: Re: Are you a lefty or a righty?
Post by: Parts on February 19, 2013, 10:47:51 AM
Learning to juggle will help you with doing more things with your non dominant hand and improve your overall fine motor skills.  It's not easy though and took me a long time to teach myself
Title: Re: Are you a lefty or a righty?
Post by: "couldbecousin" on February 19, 2013, 11:14:05 AM
I type with both hands

  I type with my right index finger and left middle finger and that's all.  :tard:
Title: Re: Are you a lefty or a righty?
Post by: bodie on February 19, 2013, 11:37:21 AM
Oh fuckity fuck would you look at how 'speshul' i am?

 :zoinks:
Title: Re: Are you a lefty or a righty?
Post by: P7PSP on February 19, 2013, 11:45:38 AM
Oh fuckity fuck would you look at how 'speshul' i am?

 :zoinks:
I like your buttocks pictures.  :viking: :thumbup:
Title: Re: Are you a lefty or a righty?
Post by: bodie on February 19, 2013, 06:02:02 PM
*turns the other cheek* :zoinks:
Title: Re: Are you a lefty or a righty?
Post by: P7PSP on February 20, 2013, 02:03:53 AM
 :lol1:
Title: Re: Are you a lefty or a righty?
Post by: Callaway on February 20, 2013, 04:02:52 PM
I'm right handed but left eyed.
Title: Re: Are you a lefty or a righty?
Post by: bodie on February 20, 2013, 04:04:49 PM
I am a 1 in 10  whoooohooo

there is a song in there :zoinks:
Title: Re: Are you a lefty or a righty?
Post by: Jack on February 20, 2013, 06:26:07 PM
I'm right handed but left eyed.

How does one determine if they are left or right eyed?
Title: Re: Are you a lefty or a righty?
Post by: skyblue1 on February 20, 2013, 06:27:43 PM
I'm right handed but left eyed.

How does one determine if they are left or right eyed?
your eye dr. would know
Title: Re: Are you a lefty or a righty?
Post by: Jack on February 20, 2013, 06:32:19 PM
I'm right handed but left eyed.

How does one determine if they are left or right eyed?
your eye dr. would know

Don't have one; never needed. How do they know?
Title: Re: Are you a lefty or a righty?
Post by: "couldbecousin" on February 20, 2013, 06:34:43 PM
I'm right handed but left eyed.

How does one determine if they are left or right eyed?

  FWIW, my right eye needs slightly less correction than my left.  :nerdy:
Title: Re: Are you a lefty or a righty?
Post by: Jack on February 20, 2013, 06:37:09 PM
I'm right handed but left eyed.

How does one determine if they are left or right eyed?

  FWIW, my right eye needs slightly less correction than my left.  :nerdy:

Has your doctor said you're right eyed? Never heard of it.
Title: Re: Are you a lefty or a righty?
Post by: "couldbecousin" on February 20, 2013, 06:44:30 PM
I'm right handed but left eyed.

How does one determine if they are left or right eyed?

  FWIW, my right eye needs slightly less correction than my left.  :nerdy:

Has your doctor said you're right eyed? Never heard of it.

  I could ask next week at my eye exam.  :orly:
Title: Re: Are you a lefty or a righty?
Post by: skyblue1 on February 20, 2013, 06:45:05 PM
I'm right handed but left eyed.

How does one determine if they are left or right eyed?
which eye do you use to check out the guys?
Title: Re: Are you a lefty or a righty?
Post by: Jack on February 20, 2013, 07:09:09 PM
I'm right handed but left eyed.

How does one determine if they are left or right eyed?
which eye do you use to check out the guys?
Here? The mind's eye.
Title: Re: Are you a lefty or a righty?
Post by: bodie on February 21, 2013, 12:52:18 AM
I'm right handed but left eyed.

How does one determine if they are left or right eyed?
your eye dr. would know

Don't have one; never needed. How do they know?
I just thought she meant that if she needs to close one eye and take an aim at something she would close the right and use the left eye.   :dunno:
Title: Re: Are you a lefty or a righty?
Post by: midlifeaspie on February 21, 2013, 10:55:52 AM
My left eye misbehaves, so if I have to view something through a single eye I choose the right one.  Does that make me right-eyed?
Title: Re: Are you a lefty or a righty?
Post by: P7PSP on February 21, 2013, 11:17:53 AM
My left eye misbehaves, so if I have to view something through a single eye I choose the right one.  Does that make me right-eyed?
Yes. I am right handed but my right eye is fucked up. When I correct with glasses I have to aim with my left eye hence cross dominance. With my rigid contacts I can use my right eye.
Title: Re: Are you a lefty or a righty?
Post by: Callaway on February 21, 2013, 11:22:34 AM
I'm right handed but left eyed.

How does one determine if they are left or right eyed?

Which eye do you use to look through a microscope, for example?

If you don't have a microscope, an easy way to check eye dominance is to hold a card with a small hole punched in the middle of it with both hands at arm's length and look at something through the hole with both eyes open.  Then while still looking at that something, move the card toward your face and see which eye the hole winds up near.
Title: Re: Are you a lefty or a righty?
Post by: Jack on February 21, 2013, 05:24:41 PM

Which eye do you use to look through a microscope, for example?


Ah, the right. Thanks.
Title: Re: Are you a lefty or a righty?
Post by: "couldbecousin" on February 21, 2013, 06:05:33 PM
My left eye misbehaves,  so if I have to view something through a single eye I choose the right one.  Does that make me right-eyed?

  What does it do?  Apparently my right eye wanders.  Actually I suspect they both do.   :insane:
Title: Re: Are you a lefty or a righty?
Post by: midlifeaspie on February 22, 2013, 11:07:08 AM
My left eye misbehaves,  so if I have to view something through a single eye I choose the right one.  Does that make me right-eyed?

  What does it do?  Apparently my right eye wanders.  Actually I suspect they both do.   :insane:

I require a pretty good amount of prism in my glasses.  The left eye likes to wander about if it isn't kept under permanent mental or prismatic control.  Causes headaches.  Stoopid eye.  :grrr:
Title: Re: Are you a lefty or a righty?
Post by: Bastet on February 22, 2013, 11:25:49 AM
I can write and draw with my left hand with limited results.
Title: Re: Are you a lefty or a righty?
Post by: bodie on February 22, 2013, 12:42:18 PM
I wonder if coke sniffers are prone to be right or left nostriled  :zoinks:
Title: Re: Are you a lefty or a righty?
Post by: P7PSP on February 22, 2013, 12:57:31 PM
I wonder if coke sniffers are prone to be right or left nostriled  :zoinks:
People who snort coke, crank etc alternate so the drugs get absorbed quicker and to not stress one side too much.
Title: Re: Are you a lefty or a righty?
Post by: bodie on February 22, 2013, 01:12:06 PM
Well i wouldn't know :zoinks:
Title: Re: Are you a lefty or a righty?
Post by: P7PSP on February 22, 2013, 01:14:28 PM
 :autism: :autism: :autism: :autism:
Title: Re: Are you a lefty or a righty?
Post by: bodie on February 22, 2013, 01:18:58 PM
If i were to be so unlucky that someone purchased some of the posh stuff for little ol' me,  then forced me to take it, and i would eventually just because i would be in fear of my life then i am sure the rolled up £20 would just aim for my left snotter.

Hypothetically, of course :laugh:
Title: Re: Are you a lefty or a righty?
Post by: 'andersom' on February 26, 2013, 05:18:30 PM
Mainly right handed, mainly left footed. No dominant eye.

Politically mainly left oriented.
Title: Re: Are you a lefty or a righty?
Post by: "couldbecousin" on February 26, 2013, 10:35:35 PM
Mainly right handed, mainly left footed. No dominant eye.

Politically mainly left oriented.

  From watching Val Kilmer catching a pack of cigarettes and kicking in a trailer door in Thunderheart, 
   I observe that he is left-handed and left-footed.  No idea about his politics though.  :zoinks:
Title: Re: Are you a lefty or a righty?
Post by: lutra on March 27, 2013, 02:53:04 PM
I'm right handed and kick a ball (par example) with my right foot way² better than I do with my left one.
Title: Re: Are you a lefty or a righty?
Post by: RageBeoulve on March 27, 2013, 05:56:10 PM
Ambidextrous. Left handed till kindergarten, when I was forced to write with my right hand until they were satisfied that I had "converted to righthandedism" or something, then I could use either.
Title: Re: Are you a lefty or a righty?
Post by: "couldbecousin" on March 28, 2013, 04:46:32 PM
Ambidextrous. Left handed till kindergarten, when I was forced to write with my right hand until they were satisfied that I had "converted to righthandedism" or something, then I could use either.

  I can't believe teachers are still allowed to do that!  :zombiefuck:  Bad enough it was done to my father (now aged 86)!
Title: Re: Are you a lefty or a righty?
Post by: RageBeoulve on March 28, 2013, 07:08:36 PM
Ambidextrous. Left handed till kindergarten, when I was forced to write with my right hand until they were satisfied that I had "converted to righthandedism" or something, then I could use either.

  I can't believe teachers are still allowed to do that!  :zombiefuck:  Bad enough it was done to my father (now aged 86)!
Well they did it when I was a kid. 20 some years ago. Yeah its stupid.
Title: Re: Are you a lefty or a righty?
Post by: P7PSP on March 28, 2013, 09:29:01 PM
Ambidextrous. Left handed till kindergarten, when I was forced to write with my right hand until they were satisfied that I had "converted to righthandedism" or something, then I could use either.

  I can't believe teachers are still allowed to do that!  :zombiefuck:  Bad enough it was done to my father (now aged 86)!
Imagine how obnoxious Rage would be if he had not been corrected.  :zoinks:
Title: Re: Are you a lefty or a righty?
Post by: Jack on March 28, 2013, 09:50:58 PM
Lefties really are the most obnoxious.
Title: Re: Are you a lefty or a righty?
Post by: sg1008 on March 29, 2013, 07:19:20 PM
oh where are all the lefty's :'(

My cousin is left handed. He is also a red head. I think he's cool.
Title: Re: Are you a lefty or a righty?
Post by: Scrapheap on March 29, 2013, 10:15:49 PM
oh where are all the lefty's :'(

Right here!!!  aaaah ummmm  :paperbag:

LEFT here!!! LEFT here!!!  :green:
Title: Re: Are you a lefty or a righty?
Post by: bodie on March 30, 2013, 08:45:42 AM
i have been asked for a left handed wank before,  someone thought it was a bit of a novelty
Title: Re: Are you a lefty or a righty?
Post by: Scrapheap on March 30, 2013, 11:04:16 AM
i have been asked for a left handed wank before,  someone thought it was a bit of a novelty

A guy was with you and wanted a wank? what was wrong with him??  :scratchhead:
Title: Re: Are you a lefty or a righty?
Post by: renaeden on November 17, 2013, 05:14:59 AM
I am the opposite of Callaway - left-handed but right-eyed. I am also left-footed. However, I iron clothes right-handed, shoot a rifle right-handed (I did this in army cadets) and if I were to play cricket or baseball, I would bat right-handed.
Title: Re: Are you a lefty or a righty?
Post by: sg1008 on November 17, 2013, 12:54:00 PM
I am right handed, and as it turns out, left-brained.

I am now training myself to use my left hand (and right side of my brain) more, i think it will help with fiddling :)

Just to clarify, so ppl dont get strange ideas :P , when i say I am left-brained it just means that not only are the muscles in my righthand more developed, the synaptic neural connections with my right hand are also slicker. I found then out when playing drums and I couldn't figure how to play a sequence unless my righthand played along with my left hand.
Title: Re: Are you a lefty or a righty?
Post by: Al Swearegen on November 17, 2013, 01:14:55 PM
I am right handed, and as it turns out, left-brained.

I am now training myself to use my left hand (and right side of my brain) more, i think it will help with fiddling :)

Just to clarify, so ppl dont get strange ideas :P , when i say I am left-brained it just means that not only are the muscles in my righthand more developed, the synaptic neural connections with my right hand are also slicker. I found then out when playing drums and I couldn't figure how to play a sequence unless my righthand played along with my left hand.

Fiddling? Oh Fiddling ....with the instrument called a fiddle. Gotcha
Title: Re: Are you a lefty or a righty?
Post by: sg1008 on November 17, 2013, 01:15:59 PM
I am right handed, and as it turns out, left-brained.

I am now training myself to use my left hand (and right side of my brain) more, i think it will help with fiddling :)

Just to clarify, so ppl dont get strange ideas :P , when i say I am left-brained it just means that not only are the muscles in my righthand more developed, the synaptic neural connections with my right hand are also slicker. I found then out when playing drums and I couldn't figure how to play a sequence unless my righthand played along with my left hand.

Fiddling? Oh Fiddling ....with the instrument called a fiddle. Gotcha

 :violin: lol
Title: Re: Are you a lefty or a righty?
Post by: Queen Victoria on November 17, 2013, 04:15:04 PM
PA and I are righties.  The PR should probably be a rightie also, but since the Cerebral Palsy affects her right hand and arm fairly severely, she's a lefty.  I say probably because my MIL was a lefty, so the PR may have naturally inherited that tendency, but I doubt it.
Title: Re: Are you a lefty or a righty?
Post by: Yuri Bezmenov on January 31, 2017, 03:30:41 PM
I'm right handed but left eyed.

I'm the opposite.
Title: Re: Are you a lefty or a righty?
Post by: Yuri Bezmenov on January 31, 2017, 03:32:45 PM
Ambidextrous. Left handed till kindergarten, when I was forced to write with my right hand until they were satisfied that I had "converted to righthandedism" or something, then I could use either.

  I can't believe teachers are still allowed to do that!  :zombiefuck:  Bad enough it was done to my father (now aged 86)!
Well they did it when I was a kid. 20 some years ago. Yeah its stupid.

They tried to do this to me. I fought back.  :viking:
Title: Re: Are you a lefty or a righty?
Post by: renaeden on January 31, 2017, 05:05:11 PM
I'm right handed but left eyed.

I'm the opposite.
I am the same as you. ;)
Probably because my left eye is really weak and wanders off if I don't wear prismatic lenses.
Title: Re: Are you a lefty or a righty?
Post by: Jack on January 31, 2017, 05:14:57 PM
Ambidextrous. Left handed till kindergarten, when I was forced to write with my right hand until they were satisfied that I had "converted to righthandedism" or something, then I could use either.

  I can't believe teachers are still allowed to do that!  :zombiefuck:  Bad enough it was done to my father (now aged 86)!
Well they did it when I was a kid. 20 some years ago. Yeah its stupid.

They tried to do this to me. I fought back.  :viking:
It was a strange practice. Left handed people seem to be rather ambidextrous anyway simply from living in a right handed world.
Title: Re: Are you a lefty or a righty?
Post by: "couldbecousin" on February 02, 2017, 09:55:17 AM
Ambidextrous. Left handed till kindergarten, when I was forced to write with my right hand until they were satisfied that I had "converted to righthandedism" or something, then I could use either.

  I can't believe teachers are still allowed to do that!  :zombiefuck:  Bad enough it was done to my father (now aged 86)!
Well they did it when I was a kid. 20 some years ago. Yeah its stupid.

They tried to do this to me. I fought back.  :viking:
It was a strange practice. Left handed people seem to be rather ambidextrous anyway simply from living in a right handed world.

  That may explain my boss, who is very skilled with both hands.  Writes with her left hand,
   but uses knives with her right hand, which I consider very unusual for a lefty.  :fatchef:
Title: Re: Are you a lefty or a righty?
Post by: Queen Victoria on February 02, 2017, 10:27:44 AM
Ambidextrous. Left handed till kindergarten, when I was forced to write with my right hand until they were satisfied that I had "converted to righthandedism" or something, then I could use either.

  I can't believe teachers are still allowed to do that!  :zombiefuck:  Bad enough it was done to my father (now aged 86)!
Well they did it when I was a kid. 20 some years ago. Yeah its stupid.

They tried to do this to me. I fought back.  :viking:
It was a strange practice. Left handed people seem to be rather ambidextrous anyway simply from living in a right handed world.

  That may explain my boss, who is very skilled with both hands.  Writes with her left hand,
   but uses knives with her right hand, which I consider very unusual for a lefty.  :fatchef:


There's one or two golfers (?) or baseball players (?) who are lefties, but hit right-handed.

I think The PR would have been a rightie, but was forced to be a lefty because of her stroke.
Title: Re: Are you a lefty or a righty?
Post by: Jack on February 02, 2017, 06:22:54 PM
Ambidextrous. Left handed till kindergarten, when I was forced to write with my right hand until they were satisfied that I had "converted to righthandedism" or something, then I could use either.

  I can't believe teachers are still allowed to do that!  :zombiefuck:  Bad enough it was done to my father (now aged 86)!
Well they did it when I was a kid. 20 some years ago. Yeah its stupid.

They tried to do this to me. I fought back.  :viking:
It was a strange practice. Left handed people seem to be rather ambidextrous anyway simply from living in a right handed world.

  That may explain my boss, who is very skilled with both hands.  Writes with her left hand,
   but uses knives with her right hand, which I consider very unusual for a lefty.  :fatchef:

Oldest is left handed but wouldn't know what to do with left handed scissors or can opener. :laugh:
Title: Re: Are you a lefty or a righty?
Post by: renaeden on February 02, 2017, 09:50:50 PM
I am left-handed but if I were to play golf or baseball, it would be right-handed.

Archery too. For some reason, Kayleigh would hold a bow left-handed. She also holds her Nerf guns left-handed whereas I would be right-handed for that as well.
Title: Re: Are you a lefty or a righty?
Post by: Yuri Bezmenov on July 06, 2018, 05:38:33 PM
I just heard the evolutionary biologist Heather Heying say that research done on the occupations and lifestyles of left handed people has revealed something interesting.

Left handed people throughout the world, are over represented in fields of science and in mental institutions.   :lol1:
Title: Re: Are you a lefty or a righty?
Post by: Queen Victoria on July 06, 2018, 08:10:27 PM
My MIL was a lefty.  Everyone else is/was/should be a rightie.

The PR is a leftie because of her cerebral palsy, otherwise I think she'd be a rightie.

BTW our cat, Martha is a rightie.  This brought to mind a question about whether fish have a preference.  See below

Left-handed' fish and asymmetrical brains
November 15, 2017, University of Konstanz


To humans, being right-handed or left-handed plays an important role. The majority of people are right-handed, while only about 3 percent of people innately use both hands equally well. Preferring one side of the body over another is not unique to humans: the phenomenon occurs in the animal kingdom as well, for instance in great apes or birds, although their "handedness" is typically not as obvious as it is in humans.

"Handedness" is particularly pronounced in cichlid fish of the species Perissodus microlepis, which is endemic to Lake Tanganyika in Africa. This cichlid is highly specialised, living exclusively on the scales of other fish obtained from only one side of the bodies of their prey. When hunting, not only do individual fish display a pronounced predilection for attacking their prey from one direction, this preference is also mirrored by the shape of their heads. Many individuals of this cichlid have asymmetrical jaws that bend to the left or right.

Biologists from the University of Konstanz examined the relationship between the cichlids' preference for one side, the structure of their brains and their gene expression. A team led by Professor Axel Meyer, Professor of Zoology and Evolutionary Biology at the University of Konstanz, was able to demonstrate that the preference for one side in the animal's feeding behaviour correlates with a corresponding asymmetry of the cerebral hemispheres, as well as unequal gene expression between the hemispheres. The research results have been published in the current issue of Genome Biology and Evolution.

"Our research helps us to understand handedness and hemispheric asymmetries better. We hope that our results also will contribute to further our understanding of handedness in humans," explains the Konstanz biologist Dr Ralf Schneider, who, along with Dr Hyuk Je Lee, is one of the lead authors of the study.

In their study, the biologists documented the preference for one side of approximately 40 individual cichlids, followed by an examination of their brains. "We found a clear asymmetry across the animals' brains, especially in the Tectum Opticum region of the brain. However, this asymmetry was present only in individuals who displayed a distinct preference for one side when hunting," says Ralf Schneider. The Tectum Opticum is the region in the brain responsible for processing vision. In the respective cichlids, the hemisphere of the Tectum Opticum that controls the eye on the preferred side of the body was more strongly developed than the other. Individuals that did not display a marked preference for one side showed greater symmetry within the Tectum Opticum. The same proved true for other regions of the animals' brains. "This is interesting because it suggests a functional relationship between the shape of the brain and behavioural laterality," says Schneider.

 “Left-handed” fish and asymmetrical brains
Cichlid fry with bent jaw. Credit: University of Konstanz
Analyses of the genes (gene expression profiling) across several parts of the brain showed which genes tend to be expressed more strongly in the respective regions of the brain. The analyses revealed similar patterns to what the researchers had found in the fishes' brains structures: in the Tectum Opticum region alone, as much as 140 genes showed differing activity in the two hemispheres – corresponding with the animals' preference for one side, gene activity in the respective hemispheres of the brain was increased or decreased. The most pronounced correspondence was determined for the gene synuclein gamma alpha (sncga) – a particularly interesting result because previous studies on zebrafish have shown that this gene is expressed predominantly in the so-called habenula, a part of the brain that is asymmetric in all vertebrates, including humans. Besides synuclein gamma alpha, a range of other genes, some of which are associated with handedness and schizophrenia in humans, showed expression patterns in the brain hemispheres of the cichlids that suggest a link to handedness. There is reason to believe that some asymmetries in the brains of vertebrates could have originated in the habenula's asymmetry. The cichlids' preference for feeding on scales from just one side of their prey's body, as well as the asymmetrical shapes of their heads and brains, probably evolved due to the extremely fast "side-specific" development of gene regulation in their brains, the biologists suggest.



Read more at: https://phys.org/news/2017-11-left-handed-fish-asymmetrical-brains.html#jCp