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Junichi Ushiyama - One of the best experts on this subject based on the ideXlab platform.

  • subjective vividness of kinesthetic motor imagery is associated with the similarity in magnitude of sensorimotor event related desynchronization between motor execution and motor imagery
    Frontiers in Human Neuroscience, 2018
    Co-Authors: Hisato Toriyama, Junichi Ushiba, Junichi Ushiyama
    Abstract:

    In the field of psychology, it has been well established that there are two types of motor imagery such as kinesthetic motor imagery (KMI) and visual motor imagery (VMI), and the subjective evaluation for vividness of motor imagery each differs across individuals. This study aimed to examine how the motor imagery ability assessed by the psychological scores is associated with the Physiological Measure using electroencephalogram (EEG) sensorimotor rhythm during KMI task. First, 20 healthy young individuals evaluated subjectively how vividly they can perform each of KMI and VMI by using the Kinesthetic and Visual Imagery Questionnaire (KVIQ). We assessed their motor imagery abilities by summing each of KMI and VMI scores in KVIQ (KMItotal and VMItotal). Second, in Physiological experiments, they repeated two strengths (10% and 40% of maximal effort) of isometric voluntary wrist-dorsiflexion. Right after each contraction, they also performed its KMI. The scalp EEGs over the sensorimotor cortex were recorded during the tasks. The EEG power is known to decrease in the alpha-and-beta band (7-35Hz) from resting state to performing state of voluntary contraction or motor imagery. This phenomenon is referred to as event-related desynchronization (ERD). For each strength of the tasks, we calculated the maximal peak of ERD during voluntary contraction and that during its KMI, and Measured the degree of similarity (ERDsim) between them. The results showed significant negative correlations between KMItotal and ERDsim for both strengths (p<0.05) (i.e., the higher the KMItotal, the smaller the (ERDsim). These findings suggest that in healthy individuals with higher motor imagery ability from a first-person perspective, KMI efficiently engages the shared cortical circuits corresponding with motor execution, including the sensorimotor cortex, with high compliance.

  • subjective vividness of kinesthetic motor imagery is associated with the similarity in magnitude of sensorimotor event related desynchronization between motor execution and motor imagery
    Frontiers in Human Neuroscience, 2018
    Co-Authors: Hisato Toriyama, Junichi Ushiba, Junichi Ushiyama
    Abstract:

    In the field of psychology, it has been well established that there are two types of motor imagery such as kinesthetic motor imagery (KMI) and visual motor imagery (VMI), and the subjective evaluation for vividness of motor imagery each differs across individuals. This study aimed to examine how the motor imagery ability assessed by the psychological scores is associated with the Physiological Measure using electroencephalogram (EEG) sensorimotor rhythm during KMI task. First, 20 healthy young individuals evaluated subjectively how vividly they can perform each of KMI and VMI by using the Kinesthetic and Visual Imagery Questionnaire (KVIQ). We assessed their motor imagery abilities by summing each of KMI and VMI scores in KVIQ (KMItotal and VMItotal). Second, in Physiological experiments, they repeated two strengths (10% and 40% of maximal effort) of isometric voluntary wrist-dorsiflexion. Right after each contraction, they also performed its KMI. The scalp EEGs over the sensorimotor cortex were recorded during the tasks. The EEG power is known to decrease in the alpha-and-beta band (7-35Hz) from resting state to performing state of voluntary contraction or motor imagery. This phenomenon is referred to as event-related desynchronization (ERD). For each strength of the tasks, we calculated the maximal peak of ERD during voluntary contraction and that during its KMI, and Measured the degree of similarity (ERDsim) between them. The results showed significant negative correlations between KMItotal and ERDsim for both strengths (p<0.05) (i.e., the higher the KMItotal, the smaller the (ERDsim). These findings suggest that in healthy individuals with higher motor imagery ability from a first-person perspective, KMI efficiently engages the shared cortical circuits corresponding with motor execution, including the sensorimotor cortex, with high compliance.

Hisato Toriyama - One of the best experts on this subject based on the ideXlab platform.

  • subjective vividness of kinesthetic motor imagery is associated with the similarity in magnitude of sensorimotor event related desynchronization between motor execution and motor imagery
    Frontiers in Human Neuroscience, 2018
    Co-Authors: Hisato Toriyama, Junichi Ushiba, Junichi Ushiyama
    Abstract:

    In the field of psychology, it has been well established that there are two types of motor imagery such as kinesthetic motor imagery (KMI) and visual motor imagery (VMI), and the subjective evaluation for vividness of motor imagery each differs across individuals. This study aimed to examine how the motor imagery ability assessed by the psychological scores is associated with the Physiological Measure using electroencephalogram (EEG) sensorimotor rhythm during KMI task. First, 20 healthy young individuals evaluated subjectively how vividly they can perform each of KMI and VMI by using the Kinesthetic and Visual Imagery Questionnaire (KVIQ). We assessed their motor imagery abilities by summing each of KMI and VMI scores in KVIQ (KMItotal and VMItotal). Second, in Physiological experiments, they repeated two strengths (10% and 40% of maximal effort) of isometric voluntary wrist-dorsiflexion. Right after each contraction, they also performed its KMI. The scalp EEGs over the sensorimotor cortex were recorded during the tasks. The EEG power is known to decrease in the alpha-and-beta band (7-35Hz) from resting state to performing state of voluntary contraction or motor imagery. This phenomenon is referred to as event-related desynchronization (ERD). For each strength of the tasks, we calculated the maximal peak of ERD during voluntary contraction and that during its KMI, and Measured the degree of similarity (ERDsim) between them. The results showed significant negative correlations between KMItotal and ERDsim for both strengths (p<0.05) (i.e., the higher the KMItotal, the smaller the (ERDsim). These findings suggest that in healthy individuals with higher motor imagery ability from a first-person perspective, KMI efficiently engages the shared cortical circuits corresponding with motor execution, including the sensorimotor cortex, with high compliance.

  • subjective vividness of kinesthetic motor imagery is associated with the similarity in magnitude of sensorimotor event related desynchronization between motor execution and motor imagery
    Frontiers in Human Neuroscience, 2018
    Co-Authors: Hisato Toriyama, Junichi Ushiba, Junichi Ushiyama
    Abstract:

    In the field of psychology, it has been well established that there are two types of motor imagery such as kinesthetic motor imagery (KMI) and visual motor imagery (VMI), and the subjective evaluation for vividness of motor imagery each differs across individuals. This study aimed to examine how the motor imagery ability assessed by the psychological scores is associated with the Physiological Measure using electroencephalogram (EEG) sensorimotor rhythm during KMI task. First, 20 healthy young individuals evaluated subjectively how vividly they can perform each of KMI and VMI by using the Kinesthetic and Visual Imagery Questionnaire (KVIQ). We assessed their motor imagery abilities by summing each of KMI and VMI scores in KVIQ (KMItotal and VMItotal). Second, in Physiological experiments, they repeated two strengths (10% and 40% of maximal effort) of isometric voluntary wrist-dorsiflexion. Right after each contraction, they also performed its KMI. The scalp EEGs over the sensorimotor cortex were recorded during the tasks. The EEG power is known to decrease in the alpha-and-beta band (7-35Hz) from resting state to performing state of voluntary contraction or motor imagery. This phenomenon is referred to as event-related desynchronization (ERD). For each strength of the tasks, we calculated the maximal peak of ERD during voluntary contraction and that during its KMI, and Measured the degree of similarity (ERDsim) between them. The results showed significant negative correlations between KMItotal and ERDsim for both strengths (p<0.05) (i.e., the higher the KMItotal, the smaller the (ERDsim). These findings suggest that in healthy individuals with higher motor imagery ability from a first-person perspective, KMI efficiently engages the shared cortical circuits corresponding with motor execution, including the sensorimotor cortex, with high compliance.

Michael A Taffe - One of the best experts on this subject based on the ideXlab platform.

  • tolerance to hypothermic and antinoceptive effects of 9 tetrahydrocannabinol thc vapor inhalation in rats
    Pharmacology Biochemistry and Behavior, 2018
    Co-Authors: Jacques D Nguyen, Yanabel Grant, Tony M Kerr, Arnold Gutierrez, Maury Cole, Michael A Taffe
    Abstract:

    Abstract Rationale A reduced effect of a given dose of ∆9-tetrahydrocannabinol (THC) emerges with repeated exposure to the drug. This tolerance can vary depending on THC dose, exposure chronicity and the behavioral or Physiological Measure of interest. A novel THC inhalation system based on e-cigarette technology has been recently shown to produce the hypothermic and antinociceptive effects of THC in rats. Objective To determine if tolerance to these effects can be produced with repeated vapor inhalation. Methods Groups of male and female Wistar rats were exposed to 30 min of inhalation of the propylene glycol (PG) vehicle or THC (200 mg/mL in PG) two or three times per day for four days. Rectal temperature changes and nociception were assessed after the first exposure on the first and fourth days of repeated inhalation. Results Female, but not male, rats developed tolerance to the hypothermic and antinociceptive effects of THC after four days of twice-daily THC vapor inhalation. Thrice daily inhalation for four days resulted in tolerance in both male and female rats. The plasma THC levels reached after a 30 min inhalation session did not differ between the male and female rats. Conclusions Repeated daily THC inhalation induces tolerance in female and male rats, providing further validation of the vapor inhalation method for preclinical studies.

  • tolerance to hypothermic and antinoceptive effects of 9 tetrahydrocannabinol thc vapor inhalation in rats
    bioRxiv, 2018
    Co-Authors: Jacques D Nguyen, Yanabel Grant, Tony M Kerr, Arnold Gutierrez, Maury Cole, Michael A Taffe
    Abstract:

    Rationale: A reduced effect of a given dose of Δ9-tetrahydrocannabinol (THC) emerges with repeated exposure to the drug. This tolerance can vary depending on THC dose, exposure chronicity and the behavioral or Physiological Measure of interest. A novel THC inhalation system based on e-cigarette technology has been recently shown to produce the hypothermic and antinociceptive effects of THC in rats. Objective: To determine if tolerance to these effects can be produced with repeated vapor inhalation. Methods: Groups of male and female Wistar rats were exposed to 30 minutes of inhalation of the propylene glycol (PG) vehicle or THC (200 mg/mL in PG) two or three times per day for four days. Rectal temperature changes and nociception were assessed after the first exposure on the first and fourth days of repeated inhalation. Results: Female, but not male, rats developed tolerance to the hypothermic and antinociceptive effects of THC after four days of twice-daily THC vapor inhalation. Thrice daily inhalation for four days resulted in tolerance in both male and female rats. The plasma THC levels reached after a 30 minute inhalation session did not differ between the male and female rats. Conclusions: Repeated daily THC inhalation induces tolerance in female and male rats, providing further validation of the vapor inhalation method for preclinical studies.

Serge Carrier - One of the best experts on this subject based on the ideXlab platform.

  • An Evaluation of the Validity of Thermography as a Physiological Measure of Sexual Arousal in a Non-University Adult Sample
    Archives of Sexual Behavior, 2010
    Co-Authors: Tuuli M Kukkonen, Yitzchak M Binik, Rhonda Amsel, Serge Carrier
    Abstract:

    Thermography is a promising technology for the Physiological Measurement of sexual arousal in both men and women. This study was designed to extend our previous college student thermography study findings to an older sample ( M age = 37.05 years), add an anxiety control group to further examine the specificity of temperature change, and examine the relationship between genital temperature and a continuous Measure of subjective sexual arousal. Healthy men ( n  = 40) and women ( n  = 39) viewed a neutral film clip after which they were randomly assigned to view one of four other videos: neutral ( n  = 20), humor ( n  = 19), anxiety provoking ( n  = 20) or sexually explicit ( n  = 20). Genital and thigh temperature were continuously recorded using a TSA ImagIR thermographic camera. Continuous and discrete reports of subjective sexual arousal were also obtained. Results supported the validity of thermography as a Measure of sexual arousal: temperature change was specific to the genitals during the sexual arousal condition and was significantly correlated with subjective continuous and discrete reports of sexual arousal. Further development should assess the potential of thermography as a tool for the diagnosis and treatment evaluation of sexual arousal difficulties and for studying sex differences.

  • thermography as a Physiological Measure of sexual arousal in both men and women
    The Journal of Sexual Medicine, 2007
    Co-Authors: Tuuli M Kukkonen, Yitzchak M Binik, Rhonda Amsel, Serge Carrier
    Abstract:

    Introduction Current Physiological Measures of sexual arousal are intrusive, hard to compare between genders, and quantitatively problematic. Aim To investigate thermal imaging technology as a means of solving these problems. Methods Twenty-eight healthy men and 30 healthy women viewed a neutral film clip, after which they were randomly assigned to view one of three other video conditions: (i) neutral (N = 19); (ii) humor (N = 19); and (iii) sexually explicit (N = 20). Main outcome Measures Genital and thigh temperatures were continuously recorded using a TSA ImagIR camera. Subjective Measures of sexual arousal, humor, and relaxation were assessed using Likert-style questions prior to showing the baseline video and following each film. Results Statistical (Tukey HSD) post-hoc comparisons (P Conclusion Thermal imaging is a promising technology for the assessment of Physiological sexual arousal in both men and women.

Eugene R Bleecker - One of the best experts on this subject based on the ideXlab platform.

  • clinical implications of having reduced mid forced expiratory flow rates fef25 75 independently of fev1 in adult patients with asthma
    PLOS ONE, 2015
    Co-Authors: Craig M Riley, Sally E Wenzel, Mario Castro, Serpil C Erzurum, Kian Fan Chung, Anne M Fitzpatrick, Benjamin Gaston, Elliot Israel, Wendy C Moore, Eugene R Bleecker
    Abstract:

    Introduction FEF25-75 is one of the standard results provided in spirometry reports; however, in adult asthmatics there is limited information on how this Physiological Measure relates to clinical or biological outcomes independently of the FEV1 or the FEV1/FVC ratio. Purpose To determine the association between Hankinson’s percent-predicted FEF25-75 (FEF25-75%) levels with changes in healthcare utilization, respiratory symptom frequency, and biomarkers of distal airway inflammation. Methods In participants enrolled in the Severe Asthma Research Program 1–2, we compared outcomes across FEF25-75% quartiles. Multivariable analyses were done to avoid confounding by demographic characteristics, FEV1, and the FEV1/FVC ratio. In a sensitivity analysis, we also compared outcomes across participants with FEF25-75% below the lower limit of normal (LLN) and FEV1/FVC above LLN. Results Subjects in the lowest FEF25-75% quartile had greater rates of healthcare utilization and higher exhaled nitric oxide and sputum eosinophils. In multivariable analysis, being in the lowest FEF25-75% quartile remained significantly associated with nocturnal symptoms (OR 3.0 [95%CI 1.3–6.9]), persistent symptoms (OR 3.3 [95%CI 1–11], ICU admission for asthma (3.7 [1.3–10.8]) and blood eosinophil % (0.18 [0.07, 0.29]). In the sensitivity analysis, those with FEF25-75%

  • clinical implications of having reduced mid forced expiratory flow rates fef25 75 independently of fev1 in adult patients with asthma
    PLOS ONE, 2015
    Co-Authors: Craig M Riley, Sally E Wenzel, Mario Castro, Serpil C Erzurum, Kian Fan Chung, Anne M Fitzpatrick, Benjamin Gaston, Elliot Israel, Wendy C Moore, Eugene R Bleecker
    Abstract:

    © 2015 Riley et al. This is an open access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited. Introduction: FEF25-75 is one of the standard results provided in spirometry reports; however, in adult asthmatics there is limited information on how this Physiological Measure relates to clinical or biological outcomes independently of the FEV1 or the FEV1/FVC ratio. Purpose: To determine the association between Hankinson's percent-predicted FEF25-75 (FEF25-75%) levels with changes in healthcare utilization, respiratory symptom frequency, and biomarkers of distal airway inflammation. Methods: In participants enrolled in the Severe Asthma Research Program 1-2, we compared outcomes across FEF25-75% quartiles. Multivariable analyses were done to avoid confounding by demographic characteristics, FEV1, and the FEV1/FVC ratio. In a sensitivity analysis, we also compared outcomes across participants with FEF25-75% below the lower limit of normal (LLN) and FEV1/FVC above LLN. Results: Subjects in the lowest FEF25-75% quartile had greater rates of healthcare utilization and higher exhaled nitric oxide and sputum eosinophils. In multivariable analysis, being in the lowest FEF25-75% quartile remained significantly associated with nocturnal symptoms (OR 3.0 [95%CI 1.3-6.9]), persistent symptoms (OR 3.3 [95%CI 1-11], ICU admission for asthma (3.7 [1.3-10.8]) and blood eosinophil % (0.18 [0.07, 0.29]). In the sensitivity analysis, those with FEF25-75%