Affiliation: University of Oulu
Saari P, Immonen E, Kemppainen J, Heimonen K, Zhukovskaya M, Novikova E, et al
. Changes in electrophysiological properties of photoreceptors in Periplaneta americana associated with the loss of screening pigment. J Comp Physiol A Neuroethol Sens Neural Behav Physiol. 2018;204:915-928 pubmed publisher
..Overall, these differences can be related to the loss of screening pigment function and to a compensatory decrease in the rhabdomere size in W-E retinae. ..
Frolov R. Biophysical properties of photoreceptors in Corixa punctata facilitate diurnal life-style. Vision Res. 2015;111:75-81 pubmed publisher
..3 bits s(-1), much higher than in G. lacustris but smaller than in N. glauca. These findings support the hypothesis that Corixa's retinal function is adapted to its diurnal life-style, which is also consistent with field observations. ..
Frolov R, Immonen E, WeckstrÃ¶m M. Visual ecology and potassium conductances of insect photoreceptors. J Neurophysiol. 2016;115:2147-57 pubmed publisher
Frolov R, WeckstrÃ¶m M. Harnessing the Flow of Excitation: TRP, Voltage-Gated Na(+), and Voltage-Gated Ca(2+) Channels in Contemporary Medicine. Adv Protein Chem Struct Biol. 2016;103:25-95 pubmed publisher
Frolov R. Current advances in invertebrate vision: insights from patch-clamp studies of photoreceptors in apposition eyes. J Neurophysiol. 2016;116:709-23 pubmed publisher
Frolov R, Singh S. Evidence of more ion channels inhibited by celecoxib: KV1.3 and L-type Ca(2+) channels. BMC Res Notes. 2015;8:62 pubmed publisher
..On the other hand, the Ca(2+) channel results are consistent with previous observations indicating that, in contrast to K(+) channels, strength of celecoxib effects on LTCCs strongly varies from species to species. ..
Saari P, French A, Torkkeli P, Liu H, Immonen E, Frolov R. Distinct roles of light-activated channels TRP and TRPL in photoreceptors of Periplaneta americana. J Gen Physiol. 2017;149:455-464 pubmed publisher
..We conclude that TRPL channels provide high-gain/high-noise transduction, suitable for vision in dim light, whereas transduction by TRP channels is relatively low-gain/low-noise and allows better information transfer in bright light. ..
Frolov R, Matsushita A, Arikawa K. Not flying blind: a comparative study of photoreceptor function in flying and non-flying cockroaches. J Exp Biol. 2017;220:2335-2344 pubmed publisher
..These findings raise the issue of whether the evolutionary tuning of photoreceptor properties to visual demands proceeded differently in Blattodea than in Diptera. ..