Smartphone use can modify the body schema: An ERP study based on hand mental rotation task

Two experiments tested the hypothesis that imagery ability and figural complexity interact to affect the choice of mental rotation strategies. Participants performed the Shepard and Metzler (1971) mental rotation task. On half of the trials, the 3-D figures were manipulated to create “fragmented” figures, with some cubes missing. Good imagers were less accurate and had longer response times on fragmented figures than on complete figures. Poor imagers performed similarly on fragmented and complete figures. These results suggest that good imagers use holistic mental rotation strategies by default, but switch to alternative strategies depending on task demands, whereas poor imagers are less flexible and use piecemeal strategies regardless of the task demands.

Download Full-text

The Psychological Reality of the Body Schema: A Test With Normal Subjects

PsycEXTRA Dataset ◽

10.1037/e665412011-156 ◽

1992 ◽

Author(s):

Catherine L. Reed ◽

Martha J. Farah

Keyword(s):

Body Schema ◽

Normal Subjects ◽

The Body ◽

Psychological Reality

Download Full-text

Making the choice between bioelectrical impedance measures for body hydration status assessment

Scientific Reports ◽

10.1038/s41598-021-87253-4 ◽

2021 ◽

Vol 11 (1) ◽

Author(s):

Dmitry M. Davydov ◽

Andrey Boev ◽

Stas Gorbunov

Keyword(s):

Body Schema ◽

Bioelectrical Impedance ◽

Information Criterion ◽

The Body ◽

Whole Body ◽

Hydration Status ◽

Status Assessment ◽

Best Fitting ◽

Body Compartments ◽

Fitting In

AbstractSituational or persistent body fluid deficit (i.e., de- or hypo-hydration) is considered a significant health risk factor. Bioimpedance analysis (BIA) has been suggested as an alternative to less reliable subjective and biochemical indicators of hydration status. The present study aimed to compare various BIA models in the prediction of direct measures of body compartments associated with hydration/osmolality. Fish (n = 20) was selected as a biological model for physicochemically measuring proximate body compartments associated with hydration such as water, dissolved proteins, and non-osseous minerals as the references or criterion points. Whole-body and segmental/local impedance measures were used to investigate a pool of BIA models, which were compared by Akaike Information Criterion in their ability to accurately predict the body components. Statistical models showed that ‘volumetric-based’ BIA measures obtained in parallel, such as distance2/Rp, could be the best approach in predicting percent of body moisture, proteins, and minerals in the whole-body schema. However, serially-obtained BIA measures, such as the ratio of the reactance to resistance and the resistance adjusted for distance between electrodes, were the best fitting in predicting the compartments in the segmental schema. Validity of these results should be confirmed on humans before implementation in practice.

Download Full-text

Robot-Assisted Autism Therapy (RAAT). Criteria and Types of Experiments Using Anthropomorphic and Zoomorphic Robots. Review of the Research

Sensors ◽

10.3390/s21113720 ◽

2021 ◽

Vol 21 (11) ◽

pp. 3720

Author(s):

Barbara Szymona ◽

Marcin Maciejewski ◽

Robert Karpiński ◽

Kamil Jonak ◽

Elżbieta Radzikowska-Büchner ◽

...

Keyword(s):

Body Schema ◽

Autism Spectrum ◽

The Body ◽

Review Of The Literature ◽

Robot Assisted ◽

Social Contacts ◽

Joint Activities ◽

Autism Therapy ◽

Real Person ◽

Future Work

Supporting the development of a child with autism is a multi-profile therapeutic work on disturbed areas, especially understanding and linguistic expression used in social communication and development of social contacts. Previous studies show that it is possible to perform some therapy using a robot. This article is a synthesis review of the literature on research with the use of robots in the therapy of children with the diagnosis of early childhood autism. The review includes scientific journals from 2005–2021. Using descriptors: ASD (Autism Spectrum Disorders), Social robots, and Robot-based interventions, an analysis of available research in PubMed, Scopus and Web of Science was done. The results showed that a robot seems to be a great tool that encourages contact and involvement in joint activities. The review of the literature indicates the potential value of the use of robots in the therapy of people with autism as a facilitator in social contacts. Robot-Assisted Autism Therapy (RAAT) can encourage child to talk or do exercises. In the second aspect (prompting during a conversation), a robot encourages eye contact and suggests possible answers, e.g., during free conversation with a peer. In the third aspect (teaching, entertainment), the robot could play with autistic children in games supporting the development of joint attention. These types of games stimulate the development of motor skills and orientation in the body schema. In future work, a validation test would be desirable to check whether children with ASD are able to do the same with a real person by learning distrust and cheating the robot.

Download Full-text

Neuroimaging correlates of insight in obsessive compulsive disorder: A fMRI study

European Psychiatry ◽

10.1016/j.eurpsy.2017.01.344 ◽

2017 ◽

Vol 41 (S1) ◽

pp. S409-S409

Author(s):

A. Gadad ◽

D.Y.C.J. Reddy ◽

D.G. Venkatasubramanian ◽

D.J. C.N

Keyword(s):

Mental Rotation ◽

Negative Correlation ◽

Mental Rotation Task ◽

Healthy Controls ◽

Inferior Parietal Lobule ◽

Good Insight ◽

Compulsive Disorder ◽

Accuracy Ratio ◽

Parietal Lobule ◽

Medial Frontal Gyrus

Aim of the studyTo study the neural substrates of insight in OCD by comparing patients with good insight, patients with poor insight and matched healthy controls using functional MRI.MethodologySubjects were recruited from among patients attending OCD clinic, adult psychiatry services and psychiatry ward inpatients of National Institute of Mental Health And Neurosciences (NIMHANS), Bangalore. They were further divided into ‘good insight’ (n = 30) and ‘poor insight’ (n = 14) using Brown's assessment of belief's scale. Control subjects (n = 30) were recruited from consenting volunteers. 3 T MRI was used mental rotation task was paradigm used for fMRI and analysis was done by SPM 8.ResultsPoor insight patients and good insight patients comparison revealed differential activation in left superior/medial frontal gyrus (corresponding to the DLPFC). A negative correlation between BABS score and activation of right inferior parietal lobule. Mental rotation task behavioural data results: OCD patients as a group had significantly lower accuracy compared to healthy controls. Poor insight group had significantly decreased accuracy ratio compared to good insight group and healthy controls. A negative correlation was noted between BABS score and accuracy ratio, indicating that poorer the insight, greater the errors during the active task.ConclusionInsight has been important prognostic factor in OCD. Poor insight patients had specific deficits in left medial frontal gyrus and right inferior parietal lobule as compared to good insight patients and healthy controls. Together, these indicate that insight has a strong neurobiological underpinning in OCD.Disclosure of interestThe authors have not supplied their declaration of competing interest.

Download Full-text

The Role of Hand Size in the Fake-Hand Illusion Paradigm

Perception ◽

10.1068/p5853 ◽

2007 ◽

Vol 36 (10) ◽

pp. 1547-1554 ◽

Cited By ~ 84

Author(s):

Francesco Pavani ◽

Massimiliano Zampini

Keyword(s):

Body Image ◽

Body Schema ◽

Body Representation ◽

The Body ◽

Video Image ◽

Body Parts ◽

Statistical Correlations ◽

Hand Size ◽

Visible Hand

When a hand (either real or fake) is stimulated in synchrony with our own hand concealed from view, the felt position of our own hand can be biased toward the location of the seen hand. This intriguing phenomenon relies on the brain's ability to detect statistical correlations in the multisensory inputs (ie visual, tactile, and proprioceptive), but it is also modulated by the pre-existing representation of one's own body. Nonetheless, researchers appear to have accepted the assumption that the size of the seen hand does not matter for this illusion to occur. Here we used a real-time video image of the participant's own hand to elicit the illusion, but we varied the hand size in the video image so that the seen hand was either reduced, veridical, or enlarged in comparison to the participant's own hand. The results showed that visible-hand size modulated the illusion, which was present for veridical and enlarged images of the hand, but absent when the visible hand was reduced. These findings indicate that very specific aspects of our own body image (ie hand size) can constrain the multisensory modulation of the body schema highlighted by the fake-hand illusion paradigm. In addition, they suggest an asymmetric tendency to acknowledge enlarged (but not reduced) images of body parts within our body representation.

Download Full-text

Cognitive-Affective Neuroscience of Depersonalization

CNS Spectrums ◽

10.1017/s109285290002352x ◽

2009 ◽

Vol 14 (9) ◽

pp. 467-471 ◽

Cited By ~ 42

Author(s):

Dan J. Stein ◽

Daphne Simeon

Keyword(s):

Sensory Processing ◽

Emotional Experience ◽

Emotional Responses ◽

Body Schema ◽

The Body ◽

Affective Neuroscience ◽

Evolutionary Perspective ◽

Limbic Structures ◽

Molecular Systems ◽

Depersonalization Disorder

ABSTRACTDepersonalization disorder (DPD) is characterized by a subjective sense of detachment from one's own being and a sense of unreality. An examination of the psychobiology of depersonalization symptoms may be useful in understanding the cognitive-affective neuroscience of embodiment. DPD may be mediated by neurocircuitry and neurotransmitters involved in the integration of sensory processing and of the body schema, and in the mediation of emotional experience and the identification of feelings. For example, DPD has been found to involve autonomic blunting, deactivation of sub-cortical structures, and disturbances in molecular systems in such circuitry. An evolutionary perspective suggests that attenuation of emotional responses, mediated by deactivation of limbic structures, may sometimes be advantageous in response to inescapable stress.

Download Full-text

Mental Rotation Meets the Motion Aftereffect: The Role of hV5/MT+ in Visual Mental Imagery

Journal of Cognitive Neuroscience ◽

10.1162/jocn.2010.21525 ◽

2011 ◽

Vol 23 (6) ◽

pp. 1395-1404 ◽

Cited By ~ 19

Author(s):

Ruth Seurinck ◽

Floris P. de Lange ◽

Erik Achten ◽

Guy Vingerhoets

Keyword(s):

Mental Rotation ◽

Mental Imagery ◽

Parietal Cortex ◽

Neural Activity ◽

Posterior Parietal Cortex ◽

Visual Motion ◽

Motion Aftereffect ◽

Mental Rotation Task ◽

Behavioral Performance ◽

Visual Mental Imagery

A growing number of studies show that visual mental imagery recruits the same brain areas as visual perception. Although the necessity of hV5/MT+ for motion perception has been revealed by means of TMS, its relevance for motion imagery remains unclear. We induced a direction-selective adaptation in hV5/MT+ by means of an MAE while subjects performed a mental rotation task that elicits imagined motion. We concurrently measured behavioral performance and neural activity with fMRI, enabling us to directly assess the effect of a perturbation of hV5/MT+ on other cortical areas involved in the mental rotation task. The activity in hV5/MT+ increased as more mental rotation was required, and the perturbation of hV5/MT+ affected behavioral performance as well as the neural activity in this area. Moreover, several regions in the posterior parietal cortex were also affected by this perturbation. Our results show that hV5/MT+ is required for imagined visual motion and engages in an interaction with parietal cortex during this cognitive process.

Download Full-text

Body Schema and Body Image

10.1093/oso/9780198851721.001.0001 ◽

2021 ◽

Keyword(s):

Body Image ◽

Body Dysmorphic Disorder ◽

Body Schema ◽

The Body ◽

Body Parts ◽

Neural Activities ◽

Body Shapes ◽

Influential Book ◽

Social And Cultural Factors

Body schema refers to the system of sensory-motor functions that enables control of the position of body parts in space, without conscious awareness of those parts. Body image refers to a conscious representation of the way the body appears—a set of conscious perceptions, affective attitudes, and beliefs pertaining to one’s own bodily image. In 2005, Shaun Gallagher published an influential book entitled ‘How the Body Shapes the Mind’. This book not only defined both body schema (BS) and body image (BI), but also explored the complicated relationship between the two. The book also established the idea that there is a double dissociation, whereby body schema and body image refer to two different, but closely related, systems. Given that many kinds of pathological cases can be described in terms of body schema and body image (phantom limbs, asomatognosia, apraxia, schizophrenia, anorexia, depersonalization, and body dysmorphic disorder, among others), we might expect to find a growing consensus about these concepts and the relevant neural activities connected to these systems. Instead, an examination of the scientific literature reveals continued ambiguity and disagreement. This volume brings together leading experts from the fields of philosophy, neuroscience, psychology, and psychiatry in a lively and productive dialogue. It explores fundamental questions about the relationship between body schema and body image, and addresses ongoing debates about the role of the brain and the role of social and cultural factors in our understanding of embodiment.

Download Full-text