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Combined with the natural spread in thresholds within a population, its effect may be that a very low-frequency sound which is inaudible to some people may be loud to others. [citation needed] One study has suggested that infrasound may cause feelings of awe or fear in humans.
Infrasound sensitive fibers are found to be simple bipolar cells in the auditory ganglion with a diameter of 1.6-2.2 μm at the axon and 0.9-1.2 μm at the dendrites. [19] They originate in the apical end of the cochlea and they are located near fibers that transmit low frequency sounds in the acoustic range.
In fear conditioning, the main circuits that are involved are the sensory areas that process the conditioned and unconditioned stimuli, certain regions of the amygdala that undergo plasticity (or long-term potentiation) during learning, and the regions that bear an effect on the expression of specific conditioned responses. These pathways ...
G. Stanley Hall, the nineteenth-century founder of the American Journal of Psychology and the first president of the American Psychological Association, described fear as “the anticipation of ...
Scientists recently detected low-frequency sounds in our stratosphere with no known source.
[13] [14] Their research led them to conclude that infrasound at or around a frequency of 19 Hz, [2] [11] [15] has a range of physiological effects, including feelings of fear and shivering. [8] Though this had been known for many years, Tandy and Lawrence were the first people to link it to ghostly sightings.
In “The Flip Side of Fear”, we look at some common phobias, like sharks and flying, but also bats, germs and strangers. We tried to identify the origin of these fears and why they continue to exist when logic tells us they shouldn’t.
"Many, if not most, people experience some anxiety or discomfort with spiders, heights, confined spaces," one psychologist says.