Basic study for a new assistive system based on brain activity associated with spatial perception task during car driving

Author(s):  
Shunji Shimizu ◽  
Noboru Takahashi ◽  
Hiroaki Inoue ◽  
Hiroyuki Nara ◽  
Fumikazu Miwakeichi ◽  
...  
2014 ◽  
Vol 26 (2) ◽  
pp. 253-260 ◽  
Author(s):  
Shunji Shimizu ◽  
◽  
Hiroaki Inoue ◽  
Hiroyuki Nara ◽  
Takeshi Tsuruga ◽  
...  

The purpose of this research is develop assistive robots and apparatuses. There is a pressing need to develop new systems that assist and act for car driving and wheelchairs for the elderly as the population ages. In developing systems, it is thought to be important to examine behaviors spatial recognition. Experiments have therefore been performed to examine human spatial perceptions, especially left- and rightside visual recognition, while cars being driven using near-infrared spectroscopy (NIRS). Previous research found significant differences in the dorsolateral prefrontal cortex in the left cranial hemisphere during virtual driving and actual driving tasks. This paper discusses the measurement of brain activity during car driving. A detailed analysis was performed by segmentalizing brain activity during driving based on the motion of subjects, and we report on the relationship between brain activity and movement perception during driving.


Author(s):  
Hiroaki Inoue ◽  
Fumikazu Miwakeichi ◽  
Shunji Shimizu ◽  
Noboru Takahashi ◽  
Yasuhito Yoshizawa ◽  
...  

Author(s):  
Shunji Shimizu ◽  
Nobuhide Hirai ◽  
Fumikazu Miwakeichi ◽  
Senichiro Kikuchi ◽  
Yasuhito Yoshizawa ◽  
...  

Author(s):  
Shunji Shimizu ◽  
Hiroyuki Nara ◽  
Fumikazu Miwakeichi ◽  
Senichiro Kikuchi ◽  
Hiroaki Inoue ◽  
...  

2020 ◽  
Author(s):  
Sarah S. Sheldon ◽  
Kyle E. Mathewson

AbstractBrain oscillations are known to modulate detection of visual stimuli, but it is unclear if this is due to increased guess rate or decreased precision of the mental representation. Here we estimated quality and guess rate as a function of electroencephalography (EEG) brain activity using an orientation perception task. Errors on each trial were quantified as the difference between the target orientation and the orientation reported by participants with a response stimulus. Response errors were fitted to standard mixed model by Zhang and Luck (2008) to quantify how participants’ guess rate and standard deviation parameters varied as a function of brain activity. Twenty-four participants were included in the analysis.Within subjects, the power and phase of delta and theta post-target oscillatory activity were found to vary along with performance on the orientation perception task in that greater power and phase coherence in the 2-5 Hz band range was measured in trials with more accurate responses. In addition, the phase of delta and theta correlated with the degree of response error while oscillatory power did not have a relationship with trial-by-trial response errors. Analysis of task-related alpha activity yielded no significant results implying that alpha oscillations do not play an important role in orientation perception at single trial level. Across participants, only the standard deviation parameter correlated with oscillatory power in the high alpha and low beta frequency ranges. These results indicate that post-target power is associated with the precision of mental representations rather than the guess rate, both across trials within subjects and across subjects.


Author(s):  
Kouji Yamamoto ◽  
Hideki Takahashi ◽  
Toshiyuki Sugimachi ◽  
Kimihiko Nakano ◽  
Yoshinori Suda ◽  
...  

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