Collectively, these sustained and transient responses show the efficacy of short wavelength (473nm) light in modulating brain activity, and indirectly suggest the involvement of melanopsin-expressing RGC, which are the photoreceptors most sensitive to this wavelength.
In vertebrates, DA amacrine cells modulate light responses of the retinal network through lateral inhibition [ 1, 2] and the ascidian DA cells modulate the swimming behavior elicited by PRC activation.
This change in the index of refraction can be used to modulate light and make it carry information.
We hypothesize that viral rhodopsins modulate light-dependent signaling, in particular phototaxis, in infected protists.
Several molecular technologies based on natural photoreceptor systems have been pioneered that allow distinct cellular signaling pathways to be modulated with light in a temporally and spatially precise manner.
In plants, phytochromes sense the ratio of red to far-red light to modulate light-induced responses such as seed germination, seedling establishment, flowering, and senescence.
Through detailed analyses, the authors discovered that HID1 may function by regulating the expression of the transcription factor, PHYTOCHROME-INTERACTING FACTOR 3 (PIF3), one of the key repressors in photomorphogenesis that modulates light response [86].
The possible similarities between DA-synthesizing/5HT-accumulating cells of the ascidian sensory vesicle with DA amacrine cells of the vertebrate retina prompted us to test whether these cells would be able to modulate responses to light in the ascidian larvae.
A fundamental component in these systems is a device that modulates light.
The idea of modulating light for signalling isn't new.
