Statistical analysis on characteristic whisker movements observed in reward processing

Junichiro Yoshimoto, Jumpei Ozaki, Kohta Mizutani, Takashi Nakano, Kazushi Ikeda, Takayuki Yamashita

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Internal states of the brain can be often reflected as facial expressions. However, how animals show their facial expression is largely unexplored. Here, we focus on mice and investigate whether their whisker movements could be a facial expression of their internal states related to reward processing. We trained three mice for an auditory association task and filmed their whiskers during the task performance after enough learning. We found that approximately 5-8 Hz periodic whisking was commonly observed during reward-associated Go cue presentation. Such whisking rarely occurred in No-Go cue trials or in Go cue trials where the mice were not motivated to get a reward. Furthermore, after acquiring a reward, the mice whisked with a more protracted set-point. Using machine learning, we could accurately indicate reward-anticipating and reward-acquiring trials only from whisker time plots. Our analyses suggest that mice exhibit stereotypic whisker movements as a part of orofacial movements related to reward anticipation and acquisition.

Original languageEnglish
Title of host publication2019 Asia-Pacific Signal and Information Processing Association Annual Summit and Conference, APSIPA ASC 2019
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages723-726
Number of pages4
ISBN (Electronic)9781728132488
DOIs
Publication statusPublished - 11-2019
Externally publishedYes
Event2019 Asia-Pacific Signal and Information Processing Association Annual Summit and Conference, APSIPA ASC 2019 - Lanzhou, China
Duration: 18-11-201921-11-2019

Publication series

Name2019 Asia-Pacific Signal and Information Processing Association Annual Summit and Conference, APSIPA ASC 2019

Conference

Conference2019 Asia-Pacific Signal and Information Processing Association Annual Summit and Conference, APSIPA ASC 2019
CountryChina
CityLanzhou
Period18-11-1921-11-19

All Science Journal Classification (ASJC) codes

  • Information Systems

Fingerprint Dive into the research topics of 'Statistical analysis on characteristic whisker movements observed in reward processing'. Together they form a unique fingerprint.

Cite this