See "What the Frog's Eye tells the frog's brain" (Jerome Lettvin and
colleagues); Lettvin, J.Y., Maturana, H.R., McCulloch, W.S., & Pitts,
W.H. (1959).,What the frog's eye tells the frog's brain, Proceedings of
the IRE, 47, 1940-1951.
This article appears in lots of places on line for free download.
My experience with frogs is that they will generally try to eat anything
that moves across their visual field in a particular way, as long as it
is not above some critical size.
--Kathy Morgan
Wheaton College
Norton, MA 02766
[email protected]
Maxwell Gwynn wrote:
Michael:
The only link I can think of regarding Mesmer, animal magnetism, and
frogs, would be the following:
Mesmer's concept of "animal magnetism" involved in one incarnation
(circa 1780) the use of *charged iron rods* submerged in a
"mesmerized" tub called a baquet. Contact with these rods supposedly
aided in "curing" various illnesses (see Laurence & Perry, 1988).
This might be confused with Luigi Galvani's research into "animal
electricity", which involved producing convulsions of amputated frogs'
legs by the application of a *charged rod*, also carried out in the
mid- to late- 1700's.
Regarding tonic immobility (animal hypnosis): it has nothing to do
with any forms of human hypnosis, other than perhaps in the mind of
the hypnotic participant. One may come to believe that hypnosis
involves catalepsy of the dominant hand, for instance, and lo and
behold, one's hand becomes immobile after a hypnotic induction (see
Orne, 1959). Speaks to the role of expectancies and beliefs in
hypnotic responding (de Groot & Gwynn, 1988).
-Max Gwynn
De Groot, H. P., & Gwynn, M. I. (1989). Trance logic: A
social-cognitive interpretation. In N. P. Spanos and J. F. Chaves (Eds.),
/Hypnosis: The cognitive-behavioral perspective /(pp. 187-205).
Buffalo, NY: Prometheus.
Laurence, J. R., & Perry, C. W. (1988). /Hypnosis, will and memory:
A psycho-legal history/. NY: Guilford Press.
Orne, M. T. (1959). The nature of hypnosis: Artifact and essence.
/Journal of Abnormal Psychology, 58/, 277-299.
>>> "michael sylvester" <[email protected]> 11/4/2010 10:24 AM >>>
I can remember reading an article about what the frog's eyes tell the
frog's brain-something about motion detectors.Anyway,I was told that
frogs will only eat creatures and insects that fly.Is that true or false?
And while on this subject,did Mesmer's animal magnetism paradigm invovle
frogs? And what is the relationship beween tonic immobility of
frogs(frogs turned over on their backs) and hypnotism?
Michael "omnicentric" Sylvester,PhD
Daytona Beach,Florida
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