[Data]
Odor Map
NameComparison of Aldehyde Odor Submaps
Description
SpeciesMouse
StrainCD-1
SexMale
Age
Weight30-40 grams
Brain RegionOlfactory bulb
Sub RegionGlomerular layer
SideRight
ViewDorsal
Serial Number
Odor
BUTANAL show other
PENTANAL show other
Octanal show other
Odorant Blend
Concentration
Exposure Time
Exposure Frequency
Method
fMRI show other
NoteComparison of odor sub-maps defined by different activation levels. a) The butanal odor map (C4) was divided into lower (L50) and upper (H50) halves by thresholding at 50th intensity percentile. The H50 was then divided into three levels: I1, 84-100% (highest intensity), I2, 67-83% (medial intensity), I3, 50-66 % (low intensity). b) Example to demonstrate the analysis of spatial correlation (SCC; see Materials and Methods) between sub-maps for different odors: A is the I1 sub-map for C4 and B is the I1 sub-map for C5. The SCC value is calculated from the total counts of the four different pixel categories, N[1,1], N[1,0], N[0,1] ,and N[0,0], represented by red, black, green, and blue, respectively. c) A detailed analysis using SCC with data in Fig. 2a. C4/C5, the comparison between more similar butanal and pentanal maps; Cn/Cn+1, averaged values for all comparisons between the maps of aldehydes with one carbon difference (n = 4, 5, 6, and 7). C4/C8, the comparison between less similar butanal and octanal maps; and Cn/Cm, averaged values for all possible comparisons between the maps of aldehydes shown in Fig. 2a (m, n = 4, 5, 6, 7, and 8; m!=n). I1nI1 (black bars), I1nI2 (red bars), I1nI3 (green bars), and I1nL50 (blue bars) are for comparisons of I1 sub-map of one odorant with the I1, I2, I3, and I50 sub-map of another odor-map, respectively; I2nI2 (orange bars), the comparisons between the I2 sub-maps of different odor-maps; and I3nI3 (indigo bars), the comparisons between the I3 sub-maps of different odor-maps. The dotted yellow lines around SCC values of +/- 0.2 depict the significant correlation at p = 0.01. d) Tests of reproducibility of activity patterns for aldehydes using the SCC calculation. Reproducibility was assessed from SCC values at three different thresholding levels: top 50% (H50nH50), top 33% (H33nH33) and top 16.7% (I1nI1). The plotted values represent the averaged SCC from pentanal to octanal.
AuthorsFuqiang Xu, Nian Liu, Ikuhiro Kida, Douglas L. Rothman, Fahmeed Hyder, and Gordon M. Shepherd
PubMed_ID12963819
Map Picture
Scan Number Control
Scan Number Stimulate
Subject Count
Image Resolution
Primary Data
Image Size
Behavioral Study

Other categories referring to "Comparison of Aldehyde Odor Submaps"

 
Revisions:8
Last time:2/1/2005 3:54:53 PM
Reviewer:Nian Liu
Owner:Nian Liu
This database was supported by the Human Brain Project (NIDCD, NIMH, NIA, NICD, NINDS) and MURI (Multidisciplinary University Research Initiative). It is now supported by RO1 DC 009977 from the National Institute for Deafness and other Communication Disorders.
Link Graphic to NIF website Human Brain Project Yale Center for Medical Informatics Questions, comments, problems? Email the Database Administrator
This site is Copyright 2011, Yale Center for Medical Informatics		 National Institutes of Health Department of Health and Human Services