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Book: Body representations

Medina, Jared

(Cognitive neuropsychology ; volumen 33, issues 1 & 2 (February & March 2016))

2016

Title variant	Special issue: Body representations
Author's details	guest editors Jared Medina and H. Branch Colsett
Series title	Cognitive neuropsychology ; volumen 33, issues 1 & 2 (February & March 2016)
Collection
Language	English
Size	119 Seiten, Diagramme
Publisher	Routledge, Taylor & Francis Group
Publishing place	Abingdon, Oxon, UK
Publishing country	Great Britain
Document type	Book
HBZ-ID	HT019075643
Database	Catalogue ZB MED Medicine, Health

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Article ; Online: Using single cases to understand visual processing: The magnocellular pathway.

Medina, Jared

Cognitive neuropsychology

2022 Volume 39, Issue 1-2, Page(s) 106–108

MeSH term(s)	Humans ; Visual Pathways ; Visual Perception
Language	English
Publishing date	2022-06-08
Publishing country	England
Document type	Journal Article ; Research Support, U.S. Gov't, Non-P.H.S. ; Comment
ZDB-ID	226406-7
ISSN	1464-0627 ; 0264-3294
ISSN (online)	1464-0627
ISSN	0264-3294
DOI	10.1080/02643294.2022.2083949
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Article ; Online: Examining constraints on embodiment using the Anne Boleyn illusion.

Ambron, Elisabetta / Medina, Jared

Journal of experimental psychology. Human perception and performance

2023 Volume 49, Issue 6, Page(s) 877–892

Abstract: Using a mirror box, the concurrent stroking of the lateral side of the fifth finger behind the mirror along with stroking the empty space next to the mirror-reflected hand's fifth finger results in a strong sense of having a sixth finger-the Anne Boleyn ... ...

Abstract	Using a mirror box, the concurrent stroking of the lateral side of the fifth finger behind the mirror along with stroking the empty space next to the mirror-reflected hand's fifth finger results in a strong sense of having a sixth finger-the Anne Boleyn illusion. We used this illusion to understand what constraints illusory embodiment. In Experiment 1, we manipulated the anatomical constraints, posture, and stroking of the sixth finger, along with other variants. Given evidence from other body illusions, we predicted no illusory embodiment in conditions in which the sixth finger was created in a manner incompatible with a typical hand, when the mirror and viewed hands were in different posture, and when stroking differed. Surprisingly, the illusion was persistent in most variants, including those with curved fingers, elongated fingers, and even with mismatches between the posture of the viewed and hidden hand. In Experiment 2, we manipulated the orientation, shape, and length of the illusory sixth finger, presenting more extreme versions of the illusion. The illusion was significantly diminished only when the sixth finger was far from the hand, or in a very implausible posture. This evidence suggests that body representations are extremely flexible and allow for embodiment of empty space in conditions not seen in other body illusions. We suggest that bottom-up information from concurrent visuotactile input, combined with reduced constraints provided by the "blank canvas" of empty space, results in a particularly robust illusion. (PsycInfo Database Record (c) 2023 APA, all rights reserved).
MeSH term(s)	Humans ; Illusions ; Proprioception ; Posture ; Hand ; Fingers ; Body Image ; Touch Perception ; Visual Perception
Language	English
Publishing date	2023-01-09
Publishing country	United States
Document type	Journal Article
ZDB-ID	189734-2
ISSN	1939-1277 ; 0096-1523
ISSN (online)	1939-1277
ISSN	0096-1523
DOI	10.1037/xhp0001125
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Article ; Online: Understanding components of embodiment: Evidence from the mirror box illusion.

Leach, William T / Medina, Jared

Consciousness and cognition

2022 Volume 103, Page(s) 103373

Abstract: Past studies have examined embodiment in the rubber hand illusion, using principal components analysis (PCA) to identify factors from questionnaire responses during synchronous and asynchronous stroking. To better understand the phenomenology of ... ...

Abstract	Past studies have examined embodiment in the rubber hand illusion, using principal components analysis (PCA) to identify factors from questionnaire responses during synchronous and asynchronous stroking. To better understand the phenomenology of embodiment, we used PCA in the mirror box illusion to examine performance across conditions that varied in movement synchrony to examine multisensory integration and movement type to vary the amount of multisensory congruence. We found three dissociable components in all conditions: embodiment, deafference and attentiveness. We also examined how these embodiment ratings varied across the four conditions. As hypothesized, embodiment ratings were highest for synchronous movement, with feelings of deafference highest for asynchronous movement. Furthermore, there was a movement by timing interaction, such that sliding resulted in greater differences in synchronous versus asynchronous ratings than tapping. These results suggest that embodiment or deafference can be changed as a function of the amount of multisensory congruence.
MeSH term(s)	Attention ; Body Image ; Hand/physiology ; Humans ; Illusions/physiology ; Movement/physiology ; Proprioception/physiology ; Touch Perception/physiology ; Visual Perception/physiology
Language	English
Publishing date	2022-06-22
Publishing country	United States
Document type	Journal Article ; Research Support, U.S. Gov't, Non-P.H.S.
ZDB-ID	1106647-7
ISSN	1090-2376 ; 1053-8100
ISSN (online)	1090-2376
ISSN	1053-8100
DOI	10.1016/j.concog.2022.103373
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Article ; Online: Visuoproprioceptive conflict in hand position biases tactile localization on the hand surface.

Liu, Yuqi / Medina, Jared

Journal of experimental psychology. Human perception and performance

2021 Volume 47, Issue 3, Page(s) 344–356

Abstract: The location of touch can be represented in a somatotopic reference frame and, combined with proprioceptive information, in an external reference frame. There is evidence that body position influences where individuals feel touch on the skin surface, ... ...

Abstract	The location of touch can be represented in a somatotopic reference frame and, combined with proprioceptive information, in an external reference frame. There is evidence that body position influences where individuals feel touch on the skin surface, indicating that proprioceptive information affects tactile localization in a somatotopic reference frame. In conditions with visual and proprioceptive mismatch of body position, where do individuals feel touch on the body? We used the mirror box illusion to address this question. Participants placed 1 hand on each side of a mirror aligned with the body midline, such that the hand reflection in the mirror looked like the hand hidden behind the mirror. The illusion creates a spatial mismatch between the actual hidden hand position and where the participant perceives their hand to be (the mirror image location). Across three experiments, localization judgments on the hidden hand were consistently and systematically biased toward the actual hand position relative to the viewed hand position. These findings provide evidence that proprioceptive estimates of limb position influence tactile localization and are discussed in relation to two models of tactile localization. (PsycInfo Database Record (c) 2021 APA, all rights reserved).
MeSH term(s)	Bias ; Hand ; Humans ; Proprioception ; Touch ; Touch Perception
Language	English
Publishing date	2021-01-25
Publishing country	United States
Document type	Journal Article
ZDB-ID	189734-2
ISSN	1939-1277 ; 0096-1523
ISSN (online)	1939-1277
ISSN	0096-1523
DOI	10.1037/xhp0000893
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Article ; Online: Can they touch? A novel mental motor imagery task for the assessment of back pain.

Coslett, H Branch / Medina, Jared / Goodman, Daria Kliot / Wang, Yuchao / Burkey, Adam

Frontiers in pain research (Lausanne, Switzerland)

2024 Volume 4, Page(s) 1189695

Abstract: Introduction: As motor imagery is informed by the anticipated sensory consequences of action, including pain, we reasoned that motor imagery could provide a useful indicator of chronic back pain. We tested the hypothesis that mental motor imagery ... ...

Abstract	Introduction: As motor imagery is informed by the anticipated sensory consequences of action, including pain, we reasoned that motor imagery could provide a useful indicator of chronic back pain. We tested the hypothesis that mental motor imagery regarding body movements can provide a reliable assessment of low back pain. Methods: Eighty-five subjects with back pain and forty-five age-matched controls were shown two names of body parts and asked to indicate if they could imagine moving so that the named body parts touched. Three types of imagined movements were interrogated: movements of arms, movements of legs and movements requiring flexion and/or rotation of the low back. Results: Accuracy and reaction times were measured. Subjects with back pain were less likely to indicate that they could touch body parts than age-matched controls. The effect was observed only for those movements that required movement of the low back or legs, suggesting that the effect was not attributable to task difficulty or non-specific effects. There was an effect of pain severity. Compared to subjects with mild pain, subjects with severe pain were significantly less likely to indicate that they could move so that named body parts touched. There was a correlation between pain ratings and impaired performance for stimuli that involved the lower but not upper body. Discussion: As the Can They Touch task is quick, easy to administer and does not require an explicit judgment of pain severity, it may provide useful information to supplement the assessment of subjects with chronic pain.
Language	English
Publishing date	2024-02-05
Publishing country	Switzerland
Document type	Journal Article
ISSN	2673-561X
ISSN (online)	2673-561X
DOI	10.3389/fpain.2023.1189695
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Article ; Online: The influence of hand posture on tactile processing: Evidence from a 7T functional magnetic resonance imaging study.

Ambron, Elisabetta / Garcea, Frank E / Cason, Samuel / Medina, Jared / Detre, John A / Coslett, H Branch

Cortex; a journal devoted to the study of the nervous system and behavior

2024 Volume 173, Page(s) 138–149

Abstract: Although behavioral evidence has shown that postural changes influence the ability to localize or detect tactile stimuli, little is known regarding the brain areas that modulate these effects. This 7T functional magnetic resonance imaging (fMRI) study ... ...

Abstract	Although behavioral evidence has shown that postural changes influence the ability to localize or detect tactile stimuli, little is known regarding the brain areas that modulate these effects. This 7T functional magnetic resonance imaging (fMRI) study explores the effects of touch of the hand as a function of hand location (right or left side of the body) and hand configuration (open or closed). We predicted that changes in hand configuration would be represented in contralateral primary somatosensory cortex (S1) and the anterior intraparietal area (aIPS), whereas change in position of the hand would be associated with alterations in activation in the superior parietal lobule. Multivoxel pattern analysis and a region of interest approach partially supported our predictions. Decoding accuracy for hand location was above chance level in superior parietal lobule (SPL) and in the anterior intraparietal (aIPS) area; above chance classification of hand configuration was observed in SPL and S1. This evidence confirmed the role of the parietal cortex in postural effects on touch and the possible role of S1 in coding the body form representation of the hand.
MeSH term(s)	Humans ; Brain Mapping/methods ; Parietal Lobe/diagnostic imaging ; Parietal Lobe/physiology ; Posture ; Magnetic Resonance Imaging/methods ; Brain/diagnostic imaging ; Hand ; Somatosensory Cortex/diagnostic imaging ; Somatosensory Cortex/physiology
Language	English
Publishing date	2024-02-08
Publishing country	Italy
Document type	Journal Article
ZDB-ID	280622-8
ISSN	1973-8102 ; 0010-9452
ISSN (online)	1973-8102
ISSN	0010-9452
DOI	10.1016/j.cortex.2023.12.019
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Article ; Online: Health Literacy, Health Outcomes and Equity: A Trend Analysis Based on a Population Survey.

Keene Woods, Nikki / Ali, Umama / Medina, Melissa / Reyes, Jared / Chesser, Amy K

Journal of primary care & community health

2023 Volume 14, Page(s) 21501319231156132

Abstract: Health literacy continues to be an issue among minority groups. Population surveys are one strategy used to help better understand health disparities. The Behavioral Risk Factor Surveillance System (BRFSS) in Kansas added health literacy questions to the ...

Abstract	Health literacy continues to be an issue among minority groups. Population surveys are one strategy used to help better understand health disparities. The Behavioral Risk Factor Surveillance System (BRFSS) in Kansas added health literacy questions to the survey in 2012. This study examined population health literacy levels and health trends from 2012 to 2018. The health status variables included health care coverage status, general health rating, presence of chronic conditions, and length of time since the last check-up. The percentage of individuals reporting low health literacy decreased from 67% in 2012 to 51% in 2018. The percentage of participants with income levels less than $15 000 was 9% in 2012 and 7% in 2018. Health literacy was lowest among the age group 18 to 24-year-olds, those who identified as multiracial, separated, not graduated from high school, out of work for more than 1 year, income less than $10 000, with other living arrangements, and living in a suburban county of metropolitan statistical area. Additionally, many health conditions improved, and those reporting health insurance increased slightly. The study demonstrates how health literacy continues to be an issue, and how education and primary prevention are necessary to improve limited health literacy and health outcomes. Findings from both state-level and national BRFSS population surveys can help educate the public health and clinical health services workforce to provide better care and address health disparities for highrisk populations.
MeSH term(s)	Humans ; Health Literacy ; Data Collection ; Educational Status ; Health Status ; Income
Language	English
Publishing date	2023-02-28
Publishing country	United States
Document type	Journal Article
ZDB-ID	2550221-9
ISSN	2150-1327 ; 2150-1319
ISSN (online)	2150-1327
ISSN	2150-1319
DOI	10.1177/21501319231156132
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Article ; Online: Examining central biases in somatosensory localization: Evidence from brain-damaged individuals.

Ambron, Elisabetta / Liu, Yuqi / Grzenda, Michael / Medina, Jared

Neuropsychologia

2021 Volume 166, Page(s) 108137

Abstract: How does the brain localize touch under conditions of uncertainty caused by brain damage? By testing single cases, previous work found mislocalization of touch toward the center of the hand. We investigated whether such central bias changes as a function ...

Abstract	How does the brain localize touch under conditions of uncertainty caused by brain damage? By testing single cases, previous work found mislocalization of touch toward the center of the hand. We investigated whether such central bias changes as a function of uncertainty in somatosensory system. Fifty-one brain-damaged individuals were presented with a tactile detection task to establish their tactile threshold, and a tactile localization task in which they localized suprathreshold stimuli presented at different locations on the hand. We predicted that with increased somatosensory uncertainty, indexed by higher detection thresholds, participants would more likely to localize the stimuli toward the center of the hand. Consistent with this prediction, participants' localization errors were biased towards the center of the hand and, importantly, this bias increased as detection threshold increased. These findings provide evidence that instead of showing random errors, uncertainty leads to systematic localization errors toward the center of the hand or the center of the stimulus distribution, which overlapped in the present study. We discuss these findings under different frameworks as potential mechanisms to explain biases in tactile localization subsequent to brain damage.
MeSH term(s)	Bias ; Brain ; Hand ; Humans ; Physical Stimulation ; Touch ; Touch Perception
Language	English
Publishing date	2021-12-23
Publishing country	England
Document type	Journal Article ; Research Support, U.S. Gov't, Non-P.H.S.
ZDB-ID	207151-4
ISSN	1873-3514 ; 0028-3932
ISSN (online)	1873-3514
ISSN	0028-3932
DOI	10.1016/j.neuropsychologia.2021.108137
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Article: The great imitator: Tuberculosis with lymphadenopathy and splenomegaly.

Hall, Ashton D / Rodriguez, Laura Victoria Medina / Vearrier, Jared / Patel, Kavya / Hambley, Bryan C / Huaman, Moises A

IDCases

2024 Volume 36, Page(s) e01968

Abstract: Tuberculosis (TB) is a leading infectious killer worldwide. Over two-thirds of new TB diagnoses in the United States occur among first-generation immigrants, especially within a year of migration. Hodgkin lymphoma (HL) accounts for a minority of lymphoma ...

Abstract	Tuberculosis (TB) is a leading infectious killer worldwide. Over two-thirds of new TB diagnoses in the United States occur among first-generation immigrants, especially within a year of migration. Hodgkin lymphoma (HL) accounts for a minority of lymphoma cases but presents similarly to disseminated or extrapulmonary TB. Clinical overlap between TB and HL increases patient risk of misdiagnosis. Concomitant presentation of both diseases is not uncommon but infrequently reported. We present a case of isoniazid-resistant TB with progressively worsening lymphadenopathy and splenomegaly despite appropriate TB treatment. The patient was diagnosed with HL following PET/CT and axillary lymph node biopsy.
Language	English
Publishing date	2024-04-16
Publishing country	Netherlands
Document type	Case Reports
ZDB-ID	2745454-X
ISSN	2214-2509
ISSN	2214-2509
DOI	10.1016/j.idcr.2024.e01968
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