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An attested word from which a root in the proto-language is reconstructed is a reflex. More generally, a reflex is the known derivative of an earlier form, which may be either attested or reconstructed. A reflex that is predictable from the reconstructed history of the language is a 'regular' reflex. Reflexes of the same source are cognates.
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[2] According to Dunstan, we all have reflexes, like sneezes, hiccups, and burps, that all have a recognizable pattern when sound is added to the reflex. There are other reflexes that all babies experience, and when sound is added to these, a distinct, preemptive "cry" will occur before the infant breaks into what Dunstan calls the hysterical cry.
The reflex of producing goose bumps is known as piloerection or the pilomotor reflex, or, more traditionally, [6] horripilation. It occurs in many mammals ; a prominent example is porcupines , [ 7 ] which raise their quills when threatened, or sea otters when they encounter sharks or other predators.
Pages in category "Articles needing translation from Spanish Wikipedia" The following 200 pages are in this category, out of approximately 1,137 total. This list may not reflect recent changes .
A list of reflexes in humans. Abdominal reflex; Accommodation reflex — coordinated changes in the vergence, lens shape and pupil size when looking at a distant object after a near object. Acoustic reflex or attenuation reflex — contraction of the stapedius and tensor tympani muscles in the middle ear in response to high sound intensities.
Our brain is so good at comprehending language that we do not usually notice." [76] An example of linguistic ambiguity is the "pronoun disambiguation problem" ("PDP"): a machine has no way of determining to whom or what a pronoun in a sentence—such as "he", "she" or "it"—refers. [77] Such disambiguation is not infallible by a human, either.
The simplest reflex is initiated by a stimulus, which activates an afferent nerve. The signal is then passed to a response neuron, which generates a response. Reflexes are found with varying levels of complexity in organisms with a nervous system. A reflex occurs via neural pathways in the nervous system called reflex arcs.