Re: Old wives tales & other cures
This message is from: Marsha Jo Hannah <[EMAIL PROTECTED]> > [EMAIL PROTECTED] wrote: > > I didn't think horses had depth perception in the first place? There are several forms of depth perception. Humans (and most predators) use "stereopsis"---both eyes viewing the same object, to "triangulate" the position thereof. Due to the placement of their eyes in their skulls, horses view most of the world with one eye at a time. However, there is a narrow triangle directly in front of them, where they can see objects with both eyes at the same time. Walk around your horse, both in close and at a moderate distance, and determine the locations from which you can see both of his eyes--- that's where he has standard depth perception. However, even a one-eyed human has a pretty good idea about depths, from "motion stereo". That's because, as we move thru the world, we keep track of how the view changes as we move. (Close one eye, and walk around, looking at the world as you move. You can still tell what is near and what is farther away.) The difference in position of objects within the eye's "image" as we move gives some information about how far away the objects are. The depth information derived this way isn't as precise as depth from stereopsis, but it'll do for most "navigation" in the world. (Anybody wanna guess the subject of my PhD thesis, and the 25 years I spent programming computers?) Marsha Jo HannahMurphy must have been a horseman-- [EMAIL PROTECTED] anything that can go wrong, will! 15 mi SW of Roseburg, Oregon
Re: Old wives tales & other cures
This message is from: [EMAIL PROTECTED] In a message dated 7/4/2004 10:34:54 AM Pacific Daylight Time, [EMAIL PROTECTED] writes: She stated that it was an old Cowboy technique, and it kept the horses from jumping because cutting off the eyelashes eliminated their depth perception. OK, has anybody heard about this Good grief! where do people come up with these things? That's kind of like the local paint horse "guru" lady telling my first-time-horse-owner neighbor that as soon as her mare foaled she should lock the mare & foal in as small a stall as possible and not feed the mare for 3 or 4 days. Supposedly this was to help the mare & foal bond, and make the mare's milk come in. She asked my opinion because it just didn't sound right to her. Her instincts were right of course... Sounded like a good way of losing a foal to me. Amy Amy Evers Dun Lookin' Fjords Redmond, OR Fjord [EMAIL PROTECTED]
Re: Old wives tales & other cures
This message is from: [EMAIL PROTECTED] In a message dated 7/4/2004 11:04:49 AM Pacific Standard Time, [EMAIL PROTECTED] writes: Well, no wonder she was jumping out of the round pen..probably looking for some feed! I bet she won'r try to jump out of a pen with a big pile of hay in it! ** LOL! Yeah, probably trying to get away from her neglectful nutty owners! BTW, I didn't think horses had depth perception in the first place? / )_~ /L/L Brigid Wasson SF Bay Area, CA www.Brigid.Clickryder.com
Re: Old wives tales & other cures
This message is from: [EMAIL PROTECTED] In a message dated 7/4/2004 10:34:39 AM Pacific Standard Time, [EMAIL PROTECTED] writes: "So I cut her eyelashes off", as my jaw audibly dropped I asked why would you do that?!! She stated that it was an old Cowboy technique, and it kept the horses from jumping because cutting off the eyelashes eliminated their depth perception. This horse was also delivered in an emaciated condition, (body condition of about 3.5 out of 10) had never been loaded in a trailer, has never been in a stall and has been dewormed with herbal dewormers. The breeder told us the herbal dewormers changed the pH of the gut and therefore, eliminated the worms. ** Um, I think you answered your own question here ;-) These folks sound just a little wacky! / )_~ /L/L Brigid Wasson SF Bay Area, CA www.Brigid.Clickryder.com
Re: Old wives tales & other cures
This message is from: Jean Ernest <[EMAIL PROTECTED]> Well, no wonder she was jumping out of the round pen..probably looking for some feed! I bet she won'r try to jump out of a pen with a big pile of hay in it! Jean in now SUNNY and clear (sort of) Fairbanks, ALaska, most of the smoke is gone..But wilfifres still burning. This horse was >also delivered in an emaciated condition, (body condition of about 3.5 out >of 10) had never been loaded in a trailer, has never been in a stall and >has been dewormed with herbal dewormers. Jean Ernest Fairbanks, Alaska mailto:[EMAIL PROTECTED]
