【摘 要】
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Objective The mechanisms of the special visual phenomenon (e.g.phosphene, visual negative afterimage, discrete dark noises, etc.) have largely unclear.It has been hypothesized that such special visual
【机 构】
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Wuhan Institute for Neuroscience and Neuroengineering, South-Central University for Nationalities, W
【出 处】
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中国神经科学学会第九届全国学术会议暨第五届会员代表大会
论文部分内容阅读
Objective The mechanisms of the special visual phenomenon (e.g.phosphene, visual negative afterimage, discrete dark noises, etc.) have largely unclear.It has been hypothesized that such special visual phenomenon may be caused by ultraweak photon emissions (aka biophotons), which are kinds of very weak photon emissions from organisms or cells.However, to date, experimental evidence of spontaneous or visible light-induced ultraweak photon emission in human or animal eyes has not been reported due to technical limitations.Methods Here we established a new type of the biophoton imaging system equipped with an EM-CCD, which is featured by high quantum efficiency, high sensibility, high signal to noise ratio (SNR) and high spatial and temporal resolution.Using this system, we detected and analyzed the ultraweak photon emissions from isolated whole eye, lens, vitreous humor and retina samples from rats.Results We obtained the first experimental evidence for the existence of spontaneous and induced ultraweak photon emission from the whole eye and various parts of eye (lens, vitreous humor or retina).The time course of attenuation of the induced photon emission from the various parts of eye has variants after different durations of exposure (10, 20, or 40 s), to different light illuminations (blue, green or red).Conclusion These results suggested that the parts of the eye (i.e.retina) can emit spontaneous and induced ultraweak photon emissions, which may be the origins of negative afterimage, phosphenes and discrete dark noise.
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