A Multimodal Micro-Optrode Combining Field and Single Unit Recording, Multispectral Detection and Photolabeling Capabilities
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{"title"=>"A Multimodal Micro-Optrode Combining Field and Single Unit Recording, Multispectral Detection and Photolabeling Capabilities", "type"=>"journal", "authors"=>[{"first_name"=>"Suzie", "last_name"=>"Dufour", "scopus_author_id"=>"15020179700"}, {"first_name"=>"Guillaume", "last_name"=>"Lavertu", "scopus_author_id"=>"36953294300"}, {"first_name"=>"Sophie", "last_name"=>"Dufour-Beauséjour", "scopus_author_id"=>"54941271800"}, {"first_name"=>"Alexandre", "last_name"=>"Juneau-Fecteau", "scopus_author_id"=>"55315330200"}, {"first_name"=>"Nicole", "last_name"=>"Calakos", "scopus_author_id"=>"6603319793"}, {"first_name"=>"Martin", "last_name"=>"Deschênes", "scopus_author_id"=>"7005921833"}, {"first_name"=>"Réal", "last_name"=>"Vallée", "scopus_author_id"=>"7102885713"}, {"first_name"=>"Yves", "last_name"=>"De Koninck", "scopus_author_id"=>"7003380327"}], "year"=>2013, "source"=>"PLoS ONE", "identifiers"=>{"pui"=>"368451003", "sgr"=>"84874574248", "issn"=>"19326203", "pmid"=>"23469053", "scopus"=>"2-s2.0-84874574248", "doi"=>"10.1371/journal.pone.0057703", "isbn"=>"1932-6203 (Electronic)\r1932-6203 (Linking)"}, "id"=>"587d7c0f-5b4a-349a-8caf-d33c10bd5327", "abstract"=>"Microelectrodes have been very instrumental and minimally invasive for in vivo functional studies from deep brain structures. However they are limited in the amount of information they provide. Here, we describe a, aluminum-coated, fibre optic-based glass microprobe with multiple electrical and optical detection capabilities while retaining tip dimensions that enable single cell measurements (diameter ≤10 µm). The probe enables optical separation from individual cells in transgenic mice expressing multiple fluorescent proteins in distinct populations of neurons within the same deep brain nucleus. It also enables color conversion of photoswitchable fluorescent proteins, which can be used for post-hoc identification of the recorded cells. While metal coating did not significantly improve the optical separation capabilities of the microprobe, the combination of metal on the outside of the probe and of a hollow core within the fiber yields a microelectrode enabling simultaneous single unit and population field potential recordings. The extended range of functionalities provided by the same microprobe thus opens several avenues for multidimensional structural and functional interrogation of single cells and their surrounding deep within the intact nervous system.", "link"=>"http://www.mendeley.com/research/multimodal-microoptrode-combining-field-single-unit-recording-multispectral-detection-photolabeling", "reader_count"=>46, "reader_count_by_academic_status"=>{"Unspecified"=>3, "Professor > Associate Professor"=>1, "Researcher"=>16, "Student > Doctoral Student"=>2, "Student > Ph. D. Student"=>15, "Student > Master"=>4, "Student > Bachelor"=>1, "Lecturer"=>2, "Professor"=>2}, "reader_count_by_user_role"=>{"Unspecified"=>3, "Professor > Associate Professor"=>1, "Researcher"=>16, "Student > Doctoral Student"=>2, "Student > Ph. D. Student"=>15, "Student > Master"=>4, "Student > Bachelor"=>1, "Lecturer"=>2, "Professor"=>2}, "reader_count_by_subject_area"=>{"Engineering"=>4, "Unspecified"=>4, "Materials Science"=>2, "Medicine and Dentistry"=>5, "Agricultural and Biological Sciences"=>11, "Neuroscience"=>8, "Physics and Astronomy"=>7, "Chemistry"=>3, "Psychology"=>1, "Immunology and Microbiology"=>1}, "reader_count_by_subdiscipline"=>{"Engineering"=>{"Engineering"=>4}, "Materials Science"=>{"Materials Science"=>2}, "Medicine and Dentistry"=>{"Medicine and Dentistry"=>5}, "Neuroscience"=>{"Neuroscience"=>8}, "Chemistry"=>{"Chemistry"=>3}, "Physics and Astronomy"=>{"Physics and Astronomy"=>7}, "Psychology"=>{"Psychology"=>1}, "Immunology and Microbiology"=>{"Immunology and Microbiology"=>1}, "Agricultural and Biological Sciences"=>{"Agricultural and Biological Sciences"=>11}, "Unspecified"=>{"Unspecified"=>4}}, "reader_count_by_country"=>{"Canada"=>1, "Hungary"=>1, "United States"=>4, "Switzerland"=>1, "Portugal"=>1, "Russia"=>1}, "group_count"=>4}

Scopus | Further Information

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Figshare

  • {"files"=>["https://ndownloader.figshare.com/files/974703"], "description"=>"<p>a) Schematic representation of the probe (left) and a metal coated probe adapted to achieve large field recording through the Al coating (middle: 3D representation, right: transverse cut view). Insets are scanning electron microscopy images of the respective electrode tips (scale bars are 2 µm). b) Experimental setup for multispectral detection showing : (1) 543 nm laser (25-LGR-193-249, Melles Griot), (2) 488 nm laser (FCD488 24 mW, JDS Uniphase Corporation), (3) shutters (LS3,Uniblitz), (4) 495 nm dichroic mirror (495DCLP, Chroma Technology Corporation), (5) multiline dichroic mirror (51015bs, Chroma Technology Corporation), (6) 495 nm dichroic mirror (495DCLP, Chroma Technology Corporation), (7) PMT detectors (H6780-20, Hamamatsu) and bandpass filters (ET520/40M and ET005/52M, Chroma Technology Corporation) and (8) objective (UIS-2 Plan-N, NA = 0.25, Olympus Corporation) and the fibre optic launch system (KT110, Thorlabs Inc.).</p>", "links"=>[], "tags"=>["physiology", "cell biology", "neuroscience", "neurological disorders"], "article_id"=>642656, "categories"=>["Physiology", "Neuroscience", "Cell Biology"], "users"=>["Suzie Dufour", "Guillaume Lavertu", "Sophie Dufour-Beauséjour", "Alexandre Juneau-Fecteau", "Nicole Calakos", "Martin Deschênes", "Réal Vallée", "Yves De Koninck"], "doi"=>"https://dx.doi.org/10.1371/journal.pone.0057703.g001", "stats"=>{"downloads"=>2, "page_views"=>9, "likes"=>0}, "figshare_url"=>"https://figshare.com/articles/_Optical_and_electrical_microprobes_/642656", "title"=>"Optical and electrical microprobes.", "pos_in_sequence"=>0, "defined_type"=>1, "published_date"=>"2013-03-01 14:44:33"}
  • {"files"=>["https://ndownloader.figshare.com/files/974706"], "description"=>"<p>A) Schema of the shutters state and incident signals on the detecting PMTs as the probe passes by a green and a red cell in succession. B) (Left) Micrograph of a GFP fluorescent cell and a microprobe (highlighted with gray contour). Scale bar is 10 µm. (Right) Collected fluorescence in the PMT detector 1 (green dots), and 2 (red dots) as the probe is moved transversally in front of the cell shown in left panel. C) Same result is shown as the probe pass by a tdTomato fluorescent cell. Scale bar is 10 µm. Arrows in (B) and (C) represent the probe displacement in front of the cell. D) Striatal section of a transgenic mouse showing cells expressing fluorescent proteins under the control of D1 (red) or D2 (green) receptor (green) promoters. Some cells co-express both fluorescent proteins (see arrow). E) Average density of the different cell types in the striatum (n = 5 striatal sections). Cells were counted and densities were estimated with the help of the software Image J. F) Histogram of the optically detected cells. Fluorescent cell detections were accompanied by a rise (signal-to-noise >2) and a decay of green and/or red fluorescence as described previously. A total of 29 cells were detected and computed in a histogram according to their fluorescence colour. (G-H) Examples of <i>in vivo</i> simultaneous optical and electrical recordings (inset) as the probe pass by a green (G) or a red (H) cell.</p>", "links"=>[], "tags"=>["detection", "allows", "d1", "d2", "expressing"], "article_id"=>642659, "categories"=>["Physiology", "Neuroscience", "Cell Biology"], "users"=>["Suzie Dufour", "Guillaume Lavertu", "Sophie Dufour-Beauséjour", "Alexandre Juneau-Fecteau", "Nicole Calakos", "Martin Deschênes", "Réal Vallée", "Yves De Koninck"], "doi"=>"https://dx.doi.org/10.1371/journal.pone.0057703.g002", "stats"=>{"downloads"=>3, "page_views"=>8, "likes"=>0}, "figshare_url"=>"https://figshare.com/articles/_Multispectral_detection_allows_identifying_D1_and_D2_expressing_neurons_/642659", "title"=>"Multispectral detection allows identifying D1 and D2 expressing neurons.", "pos_in_sequence"=>0, "defined_type"=>1, "published_date"=>"2013-03-01 14:45:18"}
  • {"files"=>["https://ndownloader.figshare.com/files/974709"], "description"=>"<p>A–B) Images at different time points of a mEOS2 expressing cell during UV-induced photoconversion. UV illumination with the probe causes an increase in red fluorescence (A) and a decrease in green signal (B). C) Red and green emission of a cell during photo-conversion as a function of time. The region of interest taken into account is shown in (A) (white circle). Note that only two time points were measured for the green signal. Change in background fluorescence around the cell is shown in black.</p>", "links"=>[], "tags"=>["physiology", "cell biology", "neuroscience", "neurological disorders"], "article_id"=>642662, "categories"=>["Physiology", "Neuroscience", "Cell Biology"], "users"=>["Suzie Dufour", "Guillaume Lavertu", "Sophie Dufour-Beauséjour", "Alexandre Juneau-Fecteau", "Nicole Calakos", "Martin Deschênes", "Réal Vallée", "Yves De Koninck"], "doi"=>"https://dx.doi.org/10.1371/journal.pone.0057703.g003", "stats"=>{"downloads"=>3, "page_views"=>24, "likes"=>0}, "figshare_url"=>"https://figshare.com/articles/_Photoconversion_of_mEOS_/642662", "title"=>"Photoconversion of mEOS.", "pos_in_sequence"=>0, "defined_type"=>1, "published_date"=>"2013-03-01 14:45:53"}
  • {"files"=>["https://ndownloader.figshare.com/files/974712"], "description"=>"<p>A) 2D schematic representation of ray acceptance within a tapered waveguide (thick black boundaries). Note that for visualization purpose the taper angle was exaggerated in this illustration. B) Critical accepted incidence angle <i>θ</i><sub>1c</sub> as a function of the taper angle <i>θ</i>. Rays with incidence angles ranging from <i>θ</i><sub>1c</sub> to 90° will be accepted in the waveguide (parameters were fixed as follows: <i>R</i> = 100 µm, <i>R</i><sub>f = </sub>5 µm, <i>r</i><sub>c = </sub>60 µm, <i>r</i><sub>cf</sub> = 3 µm, <i>n</i><sub>0</sub> = 1 (air), <i>n</i><sub>0</sub> = 1.35 (tissue) <i>n</i><sub>1</sub> = 1.47 and <i>n</i><sub>2</sub> = 1.45).</p>", "links"=>[], "tags"=>["tapered"], "article_id"=>642665, "categories"=>["Physiology", "Neuroscience", "Cell Biology"], "users"=>["Suzie Dufour", "Guillaume Lavertu", "Sophie Dufour-Beauséjour", "Alexandre Juneau-Fecteau", "Nicole Calakos", "Martin Deschênes", "Réal Vallée", "Yves De Koninck"], "doi"=>"https://dx.doi.org/10.1371/journal.pone.0057703.g004", "stats"=>{"downloads"=>1, "page_views"=>11, "likes"=>0}, "figshare_url"=>"https://figshare.com/articles/_Side_acceptance_of_tapered_waveguides_/642665", "title"=>"Side acceptance of tapered waveguides.", "pos_in_sequence"=>0, "defined_type"=>1, "published_date"=>"2013-03-01 14:46:15"}
  • {"files"=>["https://ndownloader.figshare.com/files/974714"], "description"=>"<p>A1) Schematics of the coated and uncoated microprobe descents into fluorescent agar. A2) Fluorescence measurements for different penetration depths into fluorescent agar for bare (green) and coated (white) probes (n = 5 probes; 1°<<i>θ</i> <3°)). B) Effect of the coating on the fluorescence DC level when a bare (green) or a coated (black) probe is lowered into cortex and thalamic issue. Arrows show location of fluorescent cells (inset: representation of the probe displacement).</p>", "links"=>[], "tags"=>["fluorescence", "microprobe"], "article_id"=>642667, "categories"=>["Physiology", "Neuroscience", "Cell Biology"], "users"=>["Suzie Dufour", "Guillaume Lavertu", "Sophie Dufour-Beauséjour", "Alexandre Juneau-Fecteau", "Nicole Calakos", "Martin Deschênes", "Réal Vallée", "Yves De Koninck"], "doi"=>"https://dx.doi.org/10.1371/journal.pone.0057703.g005", "stats"=>{"downloads"=>2, "page_views"=>11, "likes"=>0}, "figshare_url"=>"https://figshare.com/articles/_Impact_of_fluorescence_collection_through_the_microprobe_walls_/642667", "title"=>"Impact of fluorescence collection through the microprobe walls.", "pos_in_sequence"=>0, "defined_type"=>1, "published_date"=>"2013-03-01 14:46:34"}
  • {"files"=>["https://ndownloader.figshare.com/files/974715"], "description"=>"<p>A) Schematic representation of a multimodal microprobe tip. B) Measured resistance as a function of the uninsulated surface. C) Simultaneous recording of field potential oscillations and single unit achieved with the microprobes. Spikes were computed in a time histogram (C1). Inset: overlay of 10 successive spikes (vertical scale bar: 0.1 mV, horizontal scale bar: 1 ms) (C2) according to time of occurrence relative to field maxima (arrows in c1; n = 15) and into an interspike interval histograms (C3).</p>", "links"=>[], "tags"=>["microprobes", "dual"], "article_id"=>642668, "categories"=>["Physiology", "Neuroscience", "Cell Biology"], "users"=>["Suzie Dufour", "Guillaume Lavertu", "Sophie Dufour-Beauséjour", "Alexandre Juneau-Fecteau", "Nicole Calakos", "Martin Deschênes", "Réal Vallée", "Yves De Koninck"], "doi"=>"https://dx.doi.org/10.1371/journal.pone.0057703.g006", "stats"=>{"downloads"=>1, "page_views"=>7, "likes"=>0}, "figshare_url"=>"https://figshare.com/articles/_Coated_glass_microprobes_enable_dual_electrical_recordings_/642668", "title"=>"Coated glass microprobes enable dual electrical recordings.", "pos_in_sequence"=>0, "defined_type"=>1, "published_date"=>"2013-03-01 14:46:49"}

PMC Usage Stats | Further Information

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Relative Metric

{"start_date"=>"2013-01-01T00:00:00Z", "end_date"=>"2013-12-31T00:00:00Z", "subject_areas"=>[{"subject_area"=>"/Engineering and technology", "average_usage"=>[254, 440, 558, 675, 785, 883, 972, 1061, 1154, 1248, 1336, 1414, 1489]}, {"subject_area"=>"/Engineering and technology/Manufacturing processes", "average_usage"=>[253, 422, 517, 636, 732, 824, 932, 1007, 1072, 1124, 1186, 1356, 1414]}, {"subject_area"=>"/Physical sciences/Chemistry", "average_usage"=>[247, 429, 544, 647, 747, 842, 929, 1012, 1099, 1179, 1263, 1339, 1409]}]}
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