Ryo Ishibashi

Classical models of tool knowledge and use are centred on dorsal and ventral parietal pathways. Theories of semantic cognition implicate a “hub-and-spoke” network, centred on the anterior temporal lobe (ATL), that underpins all concepts including tools. Despite their prominence, the two theoretical frameworks have never been brought together and th...

Humanness perception, which attributes fundamental and unique human characteristics to other objects or people, has significant consequences for people’s interactions. Notably, the failure to perceive humanness in older adults can lead to prejudice. This study investigates the effect of a target’s age on humanness perception in terms of two dimensi...

Introduction Body-image disturbance is a major factor in the development of eating disorders, especially among young women. There are two main components: perceptual disturbance, characterized by a discrepancy between perceived and actual body size, and affective disturbance, characterized by a discrepancy between perceived and ideal body size. Int...

In decision making related to protective action against hazard risk, scrutinization of hazard-related information seems favorable for accurate risk evaluation. It is, however, unknown how such a risk-scrutiny attitude is related to sensitivity in risk perception or the difference in the types of information (e.g., sensory vs. numerical). Furthermor...

Videos are commonly used in disaster prevention education or communication. Some consider behavioral recommendations to have more motivating content than hazard mechanisms; these, however, have not been empirically tested. Perception of hazard risk is mediated by risk-sensitive and risk-scrutiny attitudes, but which attitude the videos influence ha...

The COVID-19 pandemic required people to adapt rapidly to the digital transformation of society for social survival, which highlighted the divide between those who can and cannot digitalize. Previous studies investigated factors promoting adaptation to digitalization; however, outcomes from adaptation to a digitalized society have not been sorted i...

Coronavirus disease 2019 dramatically changed people’s behavior because of the need to adhere to infection prevention and to overcome general adversity resulting from the implementation of infection prevention measures. However, coping behavior has not been fully distinguished from risk perception, and a comprehensive picture of demographic, risk-p...

Several studies have investigated the relationship between working memory and attention. However, most of the relevant studies so far investigated top-down attention; only a few have examined possible interactions between bottom-up attention and visual working memory. In the present study, we focused on the visual saliency of different parts of pic...

Recent psychological and neuroimaging studies on altruism–egoism dilemmas have promoted our understanding of the processes underlying altruistic motivation; however, little attention has been paid to the egoistic counter-dynamics that prompt hesitancy to help. These counter-dynamics may involve the construction of reasons not to help based on conte...

Sincere praise reliably conveys positive or negative feedback, while flattery always conveys positive but unreliable feedback. These two praise types have not been compared in terms of communication effectiveness and individual preferences using neuroimaging. Through functional magnetic resonance imaging, we measured brain activity when healthy you...

Background Studies on the survivors of the 2011 Great East Japan earthquake and tsunami have revealed eight factors, called power to live, which are closely related to resilience and effective coping after intense and prolonged stress. However, whether the eight factors, which were examined in adults, are applicable to children is unclear. The purp...

Recent psychological and neuroimaging studies on altruism–egoism dilemmas have promoted our understanding of the processes underlying altruistic motivation; however, little attention has been paid to the egoistic counter-dynamics that prompt hesitancy to help. These counter-dynamics may involve the construction of reasons not to help based on conte...

Coronavirus disease 2019 (COVID-19) has dramatically changed people’s behavior, to prevent infection and overcome the general adversity caused by the implementation of infection-prevention measures. Here, we investigated the main coping-behavior and risk-perception factors, and the underlying psychological mechanisms (e.g., psychobehavioral charact...

Self-aid and mutual assistance among victims are critical for resolving difficulties in the immediate aftermath of a disaster, but individual facilitative factors for such resolution processes are poorly understood. To identify such individual factors in the background (i.e., disaster damage and demographic) and personality domains considering diff...

Clarification of the individual factors determining the speed and quality of life recovery after massive disasters is crucial in assessing the vulnerability and resilience of individuals and communities. The research, however, remains in its infancy in that the index of life recovery per se is yet to be established; researchers have utilized differ...

In laboratory settings, creativity is measured using tasks of divergent as well as convergent thinking. It has been suggested that brain connectivity is important for creativity. In the present study, we investigated the associations of convergent thinking performance of compound Remote Associates Test (CRAT) with fractional anisotropy (FA) in diff...

The ability of individuals to manage and rebuild their lives after a disaster depends on environmental factors, as well as their own psychological characteristics. A psychometric questionnaire to measure personality traits relevant to disaster survival was proposed based on a large-scale investigation of survivors of the 2011 Great East Japan Earth...

Although various factors related to the environment (perception of earthquake and warning) and knowledge (oral history and scientific knowledge) affect individual differences in evacuation behavior before a tsunami, the roles of psychological processes and personality factors in such relationships are poorly understood. We addressed this research g...

Using a variety of tools is a common and essential component of modern human life. Patients with brain damage or neurological disorders frequently have cognitive deficits in their recognition and manipulation of tools. In this study, we focused on improving tool-related cognition using transcranial direct current stimulation (tDCS). Converging evid...

The ability to recognize and use a variety of tools is an intriguing human cognitive function. Multiple neuroimaging studies have investigated neural activations with various types of tool-related tasks. In the present paper, we reviewed tool-related neural activations reported in 70 contrasts from 56 neuroimaging studies and performed a series of...

Previous studies on the mental representation of body parts have shown that both proprioceptive information and canonical images of hands affect the mental motor imagery of one's own hands. In two mental hand-rotation experiments in which verbal responses were required, we addressed the role of the semantics of laterality in manipulating canonical...

A remarkable cognitive ability in humans is the competency to use a wide variety of different tools. Two cortical regions, the anterior temporal lobes (ATL) and left inferior parietal lobule (IPL), have been proposed to make differential contributions to two kinds of knowledge about tools - function vs. manipulation. We used repetitive transcranial...