1. Volume 22, Issue 9, Pages 2482-2492 (February 2018)
Spatial Representation of Feeding and Oviposition Odors in the Brain of a Hawkmoth 
Sonja Bisch-Knaden, Ajinkya Dahake, Silke Sachse, Markus Knaden, Bill S. Hansson 
Cell Reports 
Volume 22, Issue 9, Pages (February 2018)
DOI: /j.celrep
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2. Cell Reports 2018 22, 2482-2492DOI: (10.1016/j.celrep.2018.01.082)
Copyright © 2018 The Author(s) Terms and Conditions

3. Figure 1
Odor-Evoked Activity Patterns in the Antennal Lobe of M. sexta
(A) Picture of a moth with an opened head capsule and exposed antennal lobes prepared for in vivo calcium imaging (photo by Marco Schubert). Enlarged inset, the right antennal lobe under fluorescent illumination; glomerular boundaries are not visible.
(B) Examples of calcium imaging recordings from the right antennal lobe after stimulation with 2 of 19 diagnostic odorants in three different females. The increase of fluorescence is color coded (see scale) and superimposed onto the view of the antennal lobe; the entrance of the antennal nerve is in the upper left corner. White dotted line, outline of the antennal lobe; white circles, positions of activity spots; numbers, glomerulus identification. See (C).
(C) Schematic of 23 activity spots at the dorsal surface of the right antennal lobe (same orientation as in A and B).
(D) Activity in 23 glomeruli (columns) after stimulation with 80 odorants (rows). Each cell in the heatmap represents the median response of a glomerulus (after subtraction of the solvent response) to an odorant (numerical values are given in Table S2). Horizontal lines separate chemical classes; vertical lines separate functional clusters of glomeruli (see Figure S1B). Numbers in parentheses next to odorant names depict glomeruli that could be identified with the help of the respective diagnostic odorant. See also Figure S1.
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4. Figure 2 Odor-Mediated Behavior of M. sexta in a Two-Choice Experiment
(A) Schematic of the wind tunnel (2.5 m × 0.9 m × 0.9 m). Naive, starved, 3-day-old females were released individually, and their behavior at two filter papers (6 μL of diluted odorant [1:102 in solvent] versus 6 μL of solvent) was recorded for 3 min after takeoff; n = 20 moths/odorant.
(B) Proboscis contacts. Box plots depict the median net proboscis contact duration for each experimental series (vertical line in the box) and the 25th and 75th percentiles (left and right margins of the box) together with minimum and maximum values (whiskers) (outliers not shown). Filled boxes, net contact durations different from zero (Wilcoxon matched-pairs test). Numbers in brackets, number of moths contacting at least one of the two filter papers with the proboscis.
(C) Tarsal contacts with a curled abdomen. Open circles, net duration of abdomen curling contacts in individual moths; vertical red lines, median net values for each odorant.
Net durations of contacts were calculated as contact time at the odorant minus contact time at the solvent. Underlined odorant names, significant proboscis contacts (B); +, tarsal contact with a curled abdomen (C); °, °°, one or two moths laid at least one egg on the scented filter paper. See also Figure S2.
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5. Figure 3 Linking Brain Activity Patterns to Behavior
(A and B) Correlation of each glomerulus’ activity (see Figure 1D) and (A) feeding-related behavior (net duration of proboscis contacts; see Figure 2B) and (B) oviposition-related behavior (net durations of tarsal contacts with a curled abdomen; see Figure 2C). Correlation coefficient (Spearman’s rho) and p value are given for each glomerulus; rows with a blue (A) or red (B) background highlight glomeruli with significant correlations after adjusting the significance level for multiple comparisons (modified after Bonferroni-Holms).
(C) Schematic of the antennal lobe showing the location of glomeruli whose activation level was positively correlated with feeding behavior (blue glomeruli).
(D) Schematic of the antennal lobe showing the location of glomeruli whose activation level was positively correlated oviposition behavior (red glomeruli).
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