Figure - PMC

Skip to main content

An official website of the United States government

Here's how you know

Here's how you know

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Secure .gov websites use HTTPS
A lock ( ) or https:// means you've safely connected to the .gov website. Share sensitive information only on official, secure websites.

View full-text article in PMC

. 2018 Sep 28;8:14540. doi: 10.1038/s41598-018-32752-0

Search in PMC
Search in PubMed
View in NLM Catalog
Add to search

© The Author(s) 2018

Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/.

PMC Copyright notice

(A) The simultaneous changes in prefrontal Oxy-Hb (NIRS-channel 5), forehead and cheek skin blood flow, hand skin blood flow, and MAP during positively-charged comedy stimulation in 18 subjects. The tracings of the averaged time course data at the three trials of comedy stimulation are superimposed. (B) using the average time course data, the Spearman correlation analysis was conducted between the changes in skin blood flow (cheek, forehead, or hand) or MAP and the Oxy-Hb response obtained in a given NIRS channel. The square values (ϒ²) of the Spearman correlation coefficients are plotted against the NIRS channel number. The data (ϒ²) were statistically analysed by two way repeated measures ANOVA, having the main effect of the peripheral variables (skin blood flow and MAP) and prefrontal location. #, Significant difference (P < 0.05) among the peripheral variables (two way repeated measures ANOVA and posthoc Student-Newman-Keuls test). About forehead skin blood flow, the channels of 1, 4, 5, and 9 [indicated by blue arrows (↓)] had greater ϒ² (P < 0.05) than the channels of 11, 12, 15–17, and 19–21; about cheek skin blood flow, the channels of 1, 4, and 5 [indicated by black arrows (↓)] had greater ϒ² (P < 0.05) than the channels of 12, 15–17, and 19–21.