Journal
PFLUGERS ARCHIV-EUROPEAN JOURNAL OF PHYSIOLOGY
Volume 443, Issue 2, Pages 323-330Publisher
SPRINGER-VERLAG
DOI: 10.1007/s004240100715
Keywords
flash photolysis; olfactory receptor neurons; calcium-activated chloride current; Xenopus laevis
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We describe a versatile, low-cost photolysis system in which sub-millisecond flashes generated by a xenon flash lamp are conveyed through a silica fibre directly onto a cell. The fibre, which is tapered to a sub-micrometre diameter and sputtered with chromium and aluminium, illuminates an area of about 1 mum(2). Site and timing of photolysis can be chosen independently from other experimental parameters. As an application example we show the spatially heterogeneous distribution of Ca2+-dependent Cl- channels in olfactory receptor neurons.
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