Kentaro Hiromitsu

• Ph.D
• Researcher at Advanced Telecommunications Research Institute International

Transcranial alternating current stimulation (tACS) is assumed to target specific brain regions and modulate their activity. Recent discussions of tACS propose that, entraining the phase of brain activity to the stimulation current, stimulation effects extend globally across the whole brain based on phase differences. However, immediate online spat...

Delusions of Thought Insertion (TI) are considered as one of the most complex psychotic experiences. More prevalent in schizophrenia, TI involves subjects reporting that entities of different nature have introduced thoughts or ideas into their minds. The particularity of this phenomenon is not that patients have been just caused to have certain unu...

The neural manifold in state space represents the mass neural dynamics of a biological system. A challenging modern approach treats the brain as a whole in terms of the interaction between the agent and the world. Therefore, we need to develop a method for this global neural workspace. The current study aimed to visualize spontaneous neural traject...

Objectives Hyper- and hyposensitivity in multiple modalities have been well-documented in subjects with autistic spectrum disorder (ASD) but not in subjects with acquired brain injury (ABI). The purpose of this study was to determine whether subjects with ABI experience altered sensory processing in multiple sensory modalities, and to examine the r...

Mindfulness meditation is increasingly used for clinical treatment and to improve well-being. One of the most fundamental benefits of mindfulness meditation is now considered as enhanced attentional control. Mindfulness meditation is a complex technique but most of its variants consist of a combination of two types of basic meditation practice: foc...

Is the body reducible to neural representation in the brain? There is some evidence that the brain contributes to the functioning of the body from neuroimaging, neurophysiological, and lesion studies. Well-known dyadic taxonomy of the body schema and the body image (hereafter BSBI) is based primarily on the evidence in brain-damaged patients. Altho...

Background Tumors trigger both depression and anxiety about death because they can be terminal. However, the relationship between depression and time perspective in patients with life-threatening diseases remains unclear. In this study, we examined the effects of depression on time perspective in patients with brain tumors using a projective method...

An out‐of‐body experience (OBE) is a phenomenon whereby an individual views his/her body and the world from a location outside the physical body. Previous studies have suggested that the temporoparietal junction (TPJ), the brain region responsible for integrating multisensory signals, is responsible for OBE development. Here, however, we first pres...

This paper reviews past research on bodily consciousness and its neural representations, as well as current research on the body, self, and brain. In the early 20th century bodily consciousness was first conceptualized as body schema and body image. Empirical findings on phenomena such as phantom limbs suggested that body consciousness could be red...

Lesion studies have shown that the right temporal lobe is crucial for recognition of facial expressions, particularly fear expressions. However, in previous studies, premorbid abilities of the patients were unknown and the effects of epileptic discharge could not be excluded. Herein, we report a case of a patient who underwent assessments of facial...

Background Preservation of cranial nerve function in patients with benign tumors such as meningiomas and vestibular schwannomas remains difficult following microsurgery. Methods In this study, awake surgery was performed in 22 consecutive patients with meningiomas or vestibular schwannomas that compressed cranial nerves (I–XII). Improved, unchange...

Recently, researchers have focused on the embodied sense of self (ESS), which consists of the minimal and narrative selves. Although a study demonstrated that the ESS is related to brain dysfunction empirically, the subjective aspects of the ESS, and a systematic approach to it, have not yet been examined in brain-damaged patients. To examine this,...

Online stabilization of human standing posture utilizes multisensory afferences (e.g., vision). Whereas visual feedback of spontaneous postural sway can stabilize postural control especially when observers concentrate on their body and intend to minimize postural sway, the effect of intentional control of visual feedback on postural sway itself rem...

Raw data from the experiment The dataset contains demographic measures, sense of control ratings, and measurements of postural sway.

Background: Hearing preservation in patients with vestibular schwannomas remains difficult by microsurgery or radiosurgery. Method: In this study, awake surgery via the retrosigmoid approach was performed for vestibular schwannomas (volume, 11.6 ± 11.2 ml; range, 1.3-26.4 ml) in eight consecutive patients with preoperative quartering of pure ton...

Introduction We analyzed factors associated with worsened paresis at 1-month follow-up in patients with brain tumors located in the primary motor area (M1) to establish protocols for safe awake craniotomy for M1 lesions. Methods Patients with M1 brain tumors who underwent awake surgery in our hospital (n = 61) were evaluated before, during, and imm...

Out-of-body experiences (OBEs) have been reported in patients with neurological or psychiatric disorders. According to these reports, the patients looked down on their body from overhead. Based on this phenomenon, we adopted a downward perspective in an experimentally induced OBE paradigm and compared responses to an OBE questionnaire (sensations o...

Although wandering is a common behavioral problem in patients with dementia, information about wandering in patients with severe dementia is scarce. This study analyzed data about the wandering behavior of a 77-year-old woman with severe frontotemporal dementia. Due to severe atrophy of the anterior cortex, she was totally unable to act spontaneous...

Objective: An awake craniotomy is a safe neurological surgical technique that minimizes the risk of brain damage. During the course of this surgery, the patient is asked to perform motor or cognitive tasks, but some patients exhibit severe sleepiness. Thus, the present study investigated the predictive value of a patient's preoperative neuropsycho...

We analyzed factors associated with worsened paresis in a large series of patients with brain lesions located within or near the primary motor area (M1) to establish protocols for safe, awake craniotomy of eloquent lesions. We studied patients with brain lesions involving M1, the premotor area (PMA) and the primary sensory area (S1), who underwent...