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Visualization of the spread of electrical activity in rat hippocampal slices by voltage-sensitive optical probes.
Grinvald A, Manker A, Segal M. Grinvald A, et al. J Physiol. 1982 Dec;333:269-91. doi: 10.1113/jphysiol.1982.sp014453. J Physiol. 1982. PMID: 7182467 Free PMC article.
Voltage-sensitive membrane-bound dyes and a matrix of 100 photodetectors were used to detect the spread of evoked electrical activity at the CA1 region of rat hippocampus slices. ...However, its existence could be demonstrated by treatment of the slice with picrotoxin or …
Voltage-sensitive membrane-bound dyes and a matrix of 100 photodetectors were used to detect the spread of evoked electrical activity …
Ca2+- and K+-dependent communication between central nervous system myelinated axons and oligodendrocytes revealed by voltage-sensitive dyes.
Lev-Ram V, Grinvald A. Lev-Ram V, et al. Proc Natl Acad Sci U S A. 1986 Sep;83(17):6651-5. doi: 10.1073/pnas.83.17.6651. Proc Natl Acad Sci U S A. 1986. PMID: 2428038 Free PMC article.
Electrical stimulation of the nerve evoked an optical signal revealing two clearly distinct components: a fast propagating component, corresponding to the compound action potential, and a prominent slow component. ...In addition, the experiments suggest that in this …
Electrical stimulation of the nerve evoked an optical signal revealing two clearly distinct components: a fast propagating component, …
Simultaneous optical measurements of electrical activity from multiple sites on processes of cultured neurons.
Grinvald A, Ross WN, Farber I. Grinvald A, et al. Proc Natl Acad Sci U S A. 1981 May;78(5):3245-9. doi: 10.1073/pnas.78.5.3245. Proc Natl Acad Sci U S A. 1981. PMID: 6942431 Free PMC article.
For transmission measurements, a merocyanine dye was discovered but was more sensitive than others previously tested on cultured neurons. ...A lower limit of 400-950 micrometers was obtained for 4- to 7-micrometers processes....
For transmission measurements, a merocyanine dye was discovered but was more sensitive than others previously tested on cultured neur …
Optical imaging of cortical activity: real-time imaging using extrinsic dye-signals and high resolution imaging based on slow intrinsic-signals.
Lieke EE, Frostig RD, Arieli A, Ts'o DY, Hildesheim R, Grinvald A. Lieke EE, et al. Annu Rev Physiol. 1989;51:543-59. doi: 10.1146/annurev.ph.51.030189.002551. Annu Rev Physiol. 1989. PMID: 2653196 Review. No abstract available.
Improvements in optical methods for measuring rapid changes in membrane potential.
Gupta RK, Salzberg BM, Grinvald A, Cohen LB, Kamino K, Lesher S, Boyle MB, Waggoner AS, Wang CH. Gupta RK, et al. J Membr Biol. 1981 Feb 15;58(2):123-37. doi: 10.1007/BF01870975. J Membr Biol. 1981. PMID: 7218335
In addition, a simple modification of the apparatus led to a sixfold increase in the size of dye-related birefringence signals. In preparations with a suitable geometry, these signals are as large as absorption signals but photodynamic damage and bleaching ar …
In addition, a simple modification of the apparatus led to a sixfold increase in the size of dye-related birefringence signals …
Fluorescence monitoring of electrical responses from small neurons and their processes.
Grinvald A, Fine A, Farber IC, Hildesheim R. Grinvald A, et al. Biophys J. 1983 May;42(2):195-8. doi: 10.1016/S0006-3495(83)84386-0. Biophys J. 1983. PMID: 6860775 Free PMC article.
The fluorescence intensity from a stained cell was increased 40-fold relative to our previous apparatus. The increased fluorescence intensity permits the use of an inexpensive photodiode (or a photodiode array) that has a approximately 10-fold higher quantum …
The fluorescence intensity from a stained cell was increased 40-fold relative to our previous apparatus. The increased fluorescence i …
Optical recording of synaptic potentials from processes of single neurons using intracellular potentiometric dyes.
Grinvald A, Salzberg BM, Lev-Ram V, Hildesheim R. Grinvald A, et al. Biophys J. 1987 Apr;51(4):643-51. doi: 10.1016/S0006-3495(87)83389-1. Biophys J. 1987. PMID: 3580490 Free PMC article.
We report the methodology that permitted the optical recording of action potentials from a 3-micron axon and the recording of small synaptic potentials from the processes of single cells in the segmental ganglia of the leech. The same dyes also proved useful for optical re …
We report the methodology that permitted the optical recording of action potentials from a 3-micron axon and the recording of small s …
Identification of presynaptic neurons by laser photostimulation.
Farber IC, Grinvald A. Farber IC, et al. Science. 1983 Dec 2;222(4627):1025-7. doi: 10.1126/science.6648515. Science. 1983. PMID: 6648515
An optical method involving the use of a laser and a novel fluorescent dye as a photostimulation probe has been developed to identify presynaptic neurons in a large ensemble of cells. ...
An optical method involving the use of a laser and a novel fluorescent dye as a photostimulation probe has been develop …
Interaction of sensory responses with spontaneous depolarization in layer 2/3 barrel cortex.
Petersen CC, Hahn TT, Mehta M, Grinvald A, Sakmann B. Petersen CC, et al. Proc Natl Acad Sci U S A. 2003 Nov 11;100(23):13638-43. doi: 10.1073/pnas.2235811100. Epub 2003 Oct 31. Proc Natl Acad Sci U S A. 2003. PMID: 14595013 Free PMC article.
These were either brief and localized to an area of a barrel column or occurred as propagating waves dependent on local glutamatergic synaptic transmission in layer 2/3. ...Subthreshold sensory synaptic responses evoked while a cortical area was spontaneously depola …
These were either brief and localized to an area of a barrel column or occurred as propagating waves dependent on local glutamatergic …
Imaging input and output dynamics of neocortical networks in vivo: exciting times ahead.
Grinvald A. Grinvald A. Proc Natl Acad Sci U S A. 2005 Oct 4;102(40):14125-6. doi: 10.1073/pnas.0506755102. Epub 2005 Sep 27. Proc Natl Acad Sci U S A. 2005. PMID: 16189023 Free PMC article. No abstract available.
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