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Spectral sensitivity of mono polar neurons in the eye of calliphora



Spectral sensitivity of mono polar neurons in the eye of calliphora



Journal of Comparative Physiology A Sensory Neural and Behavioral Physiology 123(4): 335-338



The spectral sensitivities of monopolar neurons in the eye of the fly Calliphora were measured. The cells were identified by using intracellular staining techniques with Procion Yellow. The receptor cells were stimulated with 11 different wavelengths, while the hyperpolarizing potential response of the postsynaptic monopolar neuron was recorded. Two groups of spectral sensitivities were found: cells with 2 sensitivity maxima at 353 and 486 nm (ratio 100:96) and cells with clear UV-sensitivity with a maximum at 353 nm (UV-green sensitivity ratio 100:22). Both groups contained L1 and L2 type neurons. In accordance with the current view of synaptology in the lamina, it seems that there are probably 2 types of neuroommatidia, depending on their input from R1-6 receptor cells.

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Accession: 006459880

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