Physics Van 3-site Navigational Menu

Physics Van Navigational Menu

Q & A: imagining pentachromatic vision

Learn more physics!

Most recent answer: 07/21/2011
Q:
Pigeons have a very subtle multicoloured plumage. But we see their plumage as trichromats. Since pigeons are pentachromats, their plumage must have plenty of unsuspected gorgeous colours after millions of years of sexual selection. Is there any way for us humans to detect with some sort of apparatus all those hidden colours?
why people cheat marriage affairs how many people cheat
the best android phone link phone tracking apps
married men cheat with men why husbands cheat wifes cheat
best android spy spy on mobile how to spy on an android phone
married cheaters site dating for married men
buy sildenafil 100mg buy sildenafil 100mg viagra 100 mg
buy sildenafil 100mg viagra without a doctor prescription viagra 100 mg
diprolene go furosemide 40mg
priligy 30mg bistromc.org cialis 40mg
prescriptions coupons discount card for prescription drugs discount coupon for viagra
prescription drugs discount cards blog.plazacutlery.com coupons for viagra printable
coupons prescriptions blog.brunothalmann.com manufacturer coupons for prescription drugs
1 wk pregnant abortion pill article on abortion
cialis manufacturer coupon cialis discounts coupons prescription drug coupons
cialis coupon card eblogin.com cialis coupons from manufacturer
lilly cialis coupon click coupons prescriptions
claritinekombo warpedfish.co.uk claritine za psa
niacine movidafm.net niacin v hrani
niacine movidafm.net niacin v hrani
flibanserin online click flibanserin buy
cialis open cialis walgreen coupon
fluvoxamine (luvox) blog.tgworkshop.net fluvoxamina bula
cialis cialis discount cialis walgreen coupon
buscopan hund buscopan wirkung buscopan dragees
voltaren retard voltaren forte voltaren spray
motilium enceinte blog.cr-inside.org motilium et grossesse
how expensive is an abortion do abortions hurt abortion clinics dallas tx
vivitrol alcohol what is vivitrol shot narcan challenge

- Anonymous
A:
That's a very cool fact of which I had been unaware. I'm posting this just to let our readers know about it. As to your question, I don't really have anything much to say.

We can always spectrum-analyze an optical signal and make five outputs corresponding to the pigeons' five different types of cone cell. Maybe we could code three of the signals as colors and two as fast and slow modulations in intensity, or some other perceptible thing. Then we could at least see what patterns the pigeons see. I wonder if an infant raised on that sort of image would develop the brain circuitry to form the equivalent of a five-color sense.

Generally, it's more or less impossible to imagine what it would be like subjectively to experience with additional senses, like bat sonar, platypus electrical senses, etc. It sure would be fun though.

Mike W.

p.s. Discussions with my more neuro-scientifically literate son bring up some more points. There are some women who are quadrochromatic, but since they have two rather similar red receptors the subjective difference isn't big. More importantly, he points out that the conventional view is that our brain is not pre-wired to know that there are three types of color receptors. It's more likely that the detailed neural structure forms in response to the actual inputs. Therefore if one were to add genes for a couple of different cone cells to a developing infant (the dreaded human-pigeon hybrid) you could probably raise people who would see pentachromatically. Maybe my artificial modified input scheme would have the same neural effect.

It's still hard to subjectively imagine a different sensory world. You might try talking to a color-blind friend (common among males) about what they're subjectively missing, then try changing the sign of what they say.
walgreens coupons deals free grocery coupons walgreens photo print coupons
married cheaters site dating for married men
priligy 30mg bistromc.org cialis 40mg
coupons rx prostudiousa.com www.januvia.com coupons
levitra pill go tadalafil pill
free online coupons pharmacy coupon new prescription coupons
prescriptions coupons markthrice.com discount coupon for viagra
coupons prescriptions blog.brunothalmann.com manufacturer coupons for prescription drugs
coupon for viagra viagra trial coupon viagra discount coupons online
lisinopril and energy drinks lisinopril and energy drinks lisinopril and energy drinks
cialis price online lipseysguns.com cialis price history
cialis coupon lilly click transfer prescription coupon
drug discount coupons link discount coupons for prescriptions
discount prescription drug cards nationalautocare.com prescription discounts cards
augmentin générique arbot.cz augmentin sirop
naprosyn roche rileytech.net naprosyn nedir
champix alkohol click champix
diflucan 150 site diflucan sirup
ibuprofen rapid tracyawheeler.com ibuprofen
sildenafil pfizer link sildenafil sandoz
fluvoxamine (luvox) open fluvoxamina bula
buscopan hund buscopan dosierung buscopan dragees
nurofen cold and flu dosage internetsellout.com nurofen plus dosage

(published on 07/21/2011)

Follow-up on this answer.