Advanced search    

Search: authors:"Hikaru Takeuchi"

30 papers found.
Use AND, OR, NOT, +word, -word, "long phrase", (parentheses) to fine-tune your search.

Effects of Time-Compressed Speech Training on Multiple Functional and Structural Neural Mechanisms Involving the Left Superior Temporal Gyrus

Correspondence should be addressed to Hikaru Takeuchi; pj.ca.ukohot.cadi@ihekat Received 7 March 2017; Accepted 1 November 2017; Published 20 February 2018 Academic Editor: J. Michael Wyss Copyright © 2018 ... multiple neural mechanisms promote adaptation to time-compressed speech. Conflicts of Interest The authors declare no conflict of interest. Authors’ Contributions Tsukasa Maruyama, Hikaru Takeuchi, Kosuke

Effects of the BDNF Val66Met Polymorphism on Gray Matter Volume in Typically Developing Children and Adolescents

The Val66Met polymorphism of brain-derived neurotrophic factor (BDNF) is associated with psychiatric disorders and regional gray matter volume (rGMV) in adults. However, the relationship between BDNF and rGMV in children has not been clarified. In this 3-year cross-sectional/longitudinal (2 time points) study, we investigated the effects of BDNF genotypes on rGMV in 185 healthy...

Parental Praise Correlates with Posterior Insular Cortex Gray Matter Volume in Children and Adolescents

A positive parenting style affects psychological and cognitive development in children. Neuroimaging studies revealed that a positive parenting style influenced brain structure in children. Parental praise is a concrete behavior observed in positive parenting. Although previous psychological studies revealed a positive effect of parental praise on children, little is known about...

Postoperative hormonal therapy prevents recovery of neurological damage after surgery in patients with breast cancer

Kotozaki in:Nature Research journals • PubMed • Google ScholarSearch for Rui Nouchi in:Nature Research journals • PubMed • Google ScholarSearch for Hikaru Takeuchi in:Nature Research journals • PubMed

Lenticular nucleus correlates of general self-efficacy in young adults

General self-efficacy (GSE) is an important factor in education, social participation, and medical treatment. However, the only study that has investigated the direct association between GSE and a neural correlate did not identify specific brain regions, rather only assessed brain structures, and included older adult subjects. GSE is related to motivation, physical activity...

Postoperative Structural Brain Changes and Cognitive Dysfunction in Patients with Breast Cancer

Objective The primary purpose of this study was to clarify the influence of the early response to surgery on brain structure and cognitive function in patients with breast cancer. It was hypothesized that the structure of the thalamus would change during the early response after surgery due to the effects of anesthesia and would represent one aspect of an intermediate phenotype...

The Impact of Television Viewing on Brain Structures: Cross-Sectional and Longitudinal Analyses

Television (TV) viewing is known to affect children's verbal abilities and other physical, cognitive, and emotional development in psychological studies. However, the brain structural development associated with TV viewing has never been investigated. Here we examined cross-sectional correlations between the duration of TV viewing and regional gray/white matter volume (rGMV/rWMV...

Regional Gray Matter Volume Is Associated with Empathizing and Systemizing in Young Adults

Empathizing is defined as the drive to identify the mental states of others for predicting their behavior and responding with an appropriate emotion. Systemizing is defined as the drive to analyze a system in terms of the rules that govern the system in order to predict its behavior. Using voxel-based morphometry and questionnaires in a large sample of normal, right-handed young...

The anterior midcingulate cortex as a neural node underlying hostility in young adults

Anger typically manifests for only a short period of time, whereas hostility is present for a longer duration. However, both of these emotions are associated with an increased likelihood of psychological problems. The nodes within the neural networks that underlie hostility remain unclear. We presumed that specific nodes might include the anterior midcingulate cortex (aMCC...

Working memory training impacts the mean diffusivity in the dopaminergic system

Dopaminergic transmission plays a critical role in working memory (WM). Mean diffusivity (MD) is a sensitive and unique neuroimaging tool for detecting microstructural differences particularly in the areas of the dopaminergic system. Despite previous investigation of the effects of WM training (WMT) on dopamine receptor binding potentials, the effects of WMT on MD remain unknown...

Brain structures associated with executive functions during everyday events in a non-clinical sample

Executive functions involve control processes such as goal-oriented planning, flexible strategy generation, sustaining set maintenance, self-monitoring, and inhibition. Executive functions during everyday events (EFEEs) are distinct from those measured under laboratory settings; the former can be severely impaired while the latter remain intact. Non-routine everyday problems due...

Amygdala and cingulate structure is associated with stereotype on sex-role

University, Sendai, JapanKeiko Kunitoki AuthorsSearch for Hikaru Takeuchi in:Nature Research journals • PubMed • Google ScholarSearch for Yasuyuki Taki in:Nature Research journals • PubMed • Google ... . Competing interests The authors declare no competing financial interests. Corresponding author Correspondence to Hikaru Takeuchi. Supplementary information PDF files1.Supplementary Information Rights

The Association between Resting Functional Connectivity and Creativity

The analysis of functional connectivity at rest (rFC) enables us to know how brain regions within and between networks interact. In this study, we used resting-state functional magnetic resonance imaging and a creativity test of divergent thinking (DT) to investigate the relationship between creativity measured by DT and rFC. We took the medial prefrontal cortex (mPFC) to be the...

The Relationship between Processing Speed and Regional White Matter Volume in Healthy Young People

Processing speed is considered a key cognitive resource and it has a crucial role in all types of cognitive performance. Some researchers have hypothesised the importance of white matter integrity in the brain for processing speed; however, the relationship at the whole-brain level between white matter volume (WMV) and processing speed relevant to the modality or problem used in...

Beneficial effects of short-term combination exercise training on diverse cognitive functions in healthy older people: study protocol for a randomized controlled trial

Background Results of previous studies have shown that exercise training can improve cognitive functions in healthy older people. Some studies have demonstrated that long-term combination exercise training can facilitate memory function improvement better than either aerobic or strength exercise training alone. Nevertheless, it remains unclear whether short-term combination...

Effects of Different Types of Cognitive Training on Cognitive Function, Brain Structure, and Driving Safety in Senior Daily Drivers: A Pilot Study

 Yoritaka Akimoto,4 Mizuki Ihara,1 Ryoichi Yokoyama,4,5 Yuka Kotozaki,1 Rui Nouchi,1 Atsushi Sekiguchi,3,4 Hikaru Takeuchi,2 Carlos Makoto Miyauchi,4 Takeshi Ogawa,4 Takakuni Goto,4 Takashi Sunda,6 Toshiyuki

Neural Correlates of the Difference between Working Memory Speed and Simple Sensorimotor Speed: An fMRI Study

The difference between the speed of simple cognitive processes and the speed of complex cognitive processes has various psychological correlates. However, the neural correlates of this difference have not yet been investigated. In this study, we focused on working memory (WM) for typical complex cognitive processes. Functional magnetic resonance imaging data were acquired during...

White Matter Microstructural Changes as Vulnerability Factors and Acquired Signs of Post-Earthquake Distress

Many survivors of severe disasters need psychological support, even those not suffering post-traumatic stress disorder (PTSD). The critical issue in understanding the psychological response after experiencing severe disasters is to distinguish neurological microstructural underpinnings as vulnerability factors from signs of emotional distress acquired soon after the stressful...

Beneficial effects of reading aloud and solving simple arithmetic calculations (learning therapy) on a wide range of cognitive functions in the healthy elderly: study protocol for a randomized controlled trial

Background Almost all cognitive functions decline with age. Results of previous studies have shown that cognitive training related to everyday life (reading aloud and solving simple arithmetic calculations), namely learning therapy, can improve two cognitive function (executive functions and processing speed) in elderly people. However, it remains unclear whether learning therapy...

Cerebral Blood Flow during Rest Associates with General Intelligence and Creativity

Recently, much scientific attention has been focused on resting brain activity and its investigation through such methods as the analysis of functional connectivity during rest (the temporal correlation of brain activities in different regions). However, investigation of the magnitude of brain activity during rest has focused on the relative decrease of brain activity during a...