Relationship between heart rate variability and the severity of psychotic symptoms in schizophrenia

2011 ◽  
Vol 23 (4) ◽  
pp. 161-166 ◽  
Author(s):  
Jong-Hoon Kim ◽  
Jun-Hyung Ann ◽  
Jinyoung Lee
Keyword(s):  
Heart Rate ◽  
Heart Rate Variability ◽  
Patient Group ◽  
Factor Model ◽  
Spectral Power ◽  
Five Factor Model ◽  
Approximate Entropy ◽  
Psychotic Symptoms ◽  
Symptom Dimensions ◽  
The Relationship

Kim J-H, Ann J-H, Lee J. Relationship between heart rate variability and the severity of psychotic symptoms in schizophrenia.Objective: The relationship between autonomic neurocardiac function and schizophrenia remains elusive. This study investigated the relationship between the heart rate variability (HRV) parameters and the severity of psychotic symptoms in schizophrenic patients.Methods: Twenty-one patients receiving risperidone monotherapy and 21 matched normal control subjects were evaluated for HRV analysis. The severity of schizophrenic symptoms was assessed using the Positive and Negative Syndrome Scale (PANSS) and a five-factor model of the PANSS was used.Results: The value of the ratio of low-to-high frequency spectral power was significantly higher in the patient group. The patient group also showed a significantly lower value of approximate entropy. After controlling the dosage of risperidone, the PANSS total score had significant negative correlations with the standard deviation of all RR intervals (SDNN) and the square root of the mean squared differences of successive normal sinus intervals (RMSSD). With respect to the PANSS factors, the score of the PANSS cognitive/disorganisation factor had significant negative correlations with SDNN and RMSSD.Conclusion: These results provide some evidence that the severity of psychotic symptoms, especially cognitive/disorganisation symptom dimensions, may be associated with reduced HRV, suggesting a potential involvement of neuroautonomic dysfunction in the pathophysiology of specific symptoms of schizophrenia.

Can the ‘mediation’ approach help to understand the role of lack of insight in the relationship between symptoms and functioning in schizophrenia?

2017 ◽  
Vol 41 (S1) ◽  
pp. s832-s832
Author(s):  
R. Rossi ◽  
V. Santarelli ◽  
C. Marucci ◽  
G. Pizziconi ◽  
F. Pacitti
Keyword(s):  
Factor Model ◽  
Five Factor Model ◽  
Psychotic Symptoms ◽  
Global Assessment Of Functioning ◽  
Global Functioning ◽  
Mediation Analyses ◽  
Competing Interest ◽  
The One ◽  
The Relationship

IntroductionThe relationship between Lack of insight (LoI) and other symptoms in schizophrenia is complex. LoI could be associated with severity of symptoms at one side and global functioning at the other. For this nature LoI is a candidate ‘mediator’ for the relationship between psychotic symptoms and global functioning.ObjectivesThe aim of this study is to explore the possible role of LoI as a mediator between psychotic symptoms and global functioning in a sample of people with schizophrenia.MethodsSeventy-three patients with a diagnosis of schizophrenia were included. The five-factor model of the PANSS by Wall work was used to assess psychopathology and G12 item as an estimate of LoI. Global assessment of functioning (GAF) was used to measure global disability. Pearson's r correlations and linear regressions for Sobel test for mediation were performed. PANSS factors were modeled as predictors of global functioning and LoI as the mediator.ResultsCorrelations revealed the prerequisite relationships between LoI, positive, negative and disorganized PANSS factors and global functioning. Mediation analyses show that LoI partially mediates the relationship between positive and disorganized factor scores and global functioning. No mediation for negative factor score was observed.ConclusionsLack of insight mediates the relationships between positive and disorganized factors and global functioning. The partial mediation we report suggests that LoI on the one hand is an independent contributor to global function, but further shows an indirect effect of PANSS positive and disorganized factors to GAF total score.Disclosure of interestThe authors have not supplied their declaration of competing interest.

Nonlinear dynamics of heart rate variability in cocaine-exposed neonates during sleep

2001 ◽  
Vol 280 (6) ◽  
pp. H2920-H2928 ◽  
Author(s):  
Smita Garde ◽  
Michael G. Regalado ◽  
Vicki L. Schechtman ◽  
Michael C. K. Khoo
Keyword(s):  
Nonlinear Dynamics ◽  
Heart Rate ◽  
Heart Rate Variability ◽  
Correlation Dimension ◽  
Spectral Power ◽  
Approximate Entropy ◽  
Parametric Model ◽  
Linear Component ◽  
Active Sleep ◽  
Quiet Sleep

The aim of this study was to determine the effects of prenatal cocaine exposure (PCE) on the dynamics of heart rate variability in full-term neonates during sleep. R-R interval (RRI) time series from 9 infants with PCE and 12 controls during periods of stable quiet sleep and active sleep were analyzed using autoregressive modeling and nonlinear dynamics. There were no differences between the two groups in spectral power distribution, approximate entropy, correlation dimension, and nonlinear predictability. However, application of surrogate data analysis to these measures revealed a significant degree of nonlinear RRI dynamics in all subjects. A parametric model, consisting of a nonlinear delayed-feedback system with stochastic noise as the perturbing input, was employed to estimate the relative contributions of linear and nonlinear deterministic dynamics in the data. Both infant groups showed similar proportional contributions in linear, nonlinear, and stochastic dynamics. However, approximate entropy, correlation dimension, and nonlinear prediction error were all decreased in active versus quiet sleep; in addition, the parametric model revealed a doubling of the linear component and a halving of the nonlinear contribution to overall heart rate variability. Spectral analysis indicated a shift in relative power toward lower frequencies. We conclude that 1) RRI dynamics in infants with PCE and normal controls are similar; and 2) in both groups, sympathetic dominance during active sleep produces primarily periodic low-frequency oscillations in RRI, whereas in quiet sleep vagal modulation leads to RRI fluctuations that are broadband and dynamically more complex.

The Relationship Between Mindfulness and Heart Rate Variability

2010 ◽  
Author(s):  
Erin V. Rodgers ◽  
Raymond Fleming ◽  
Aaryn R. Schuster
Keyword(s):  
Heart Rate ◽  
Heart Rate Variability ◽  
The Relationship

The Relationship between Heart Rate Variability and Metabolic Syndrome at a Rural Area

2004 ◽  
Vol 16 (4) ◽  
pp. 459
Author(s):  
Kyoung Bok Min ◽  
Jin Young Min ◽  
Kyung Hee Jung-Choi ◽  
Hyung Joon Jhun ◽  
Sung Il Cho ◽  
...  
Keyword(s):  
Metabolic Syndrome ◽  
Heart Rate ◽  
Heart Rate Variability ◽  
Rural Area ◽  
The Relationship

scholarly journals Indices of Heart Rate Variability and Performance During a Response-Conflict Task Are Differently Associated With ADHD and Autism

2021 ◽  
pp. 108705472097279
Author(s):  
Alessio Bellato ◽  
Iti Arora ◽  
Puja Kochhar ◽  
Chris Hollis ◽  
Madeleine J. Groom
Keyword(s):  
Heart Rate ◽  
Heart Rate Variability ◽  
Sensory Information ◽  
Response Conflict ◽  
Mediation Model ◽  
Conflict Task ◽  
Accurate Performance ◽  
And Performance ◽  
Comorbid Adhd ◽  
The Relationship

We investigated autonomic arousal, attention and response conflict, in ADHD and autism. Heart rate variability (HRV), and behavioral/electrophysiological indices of performance, were recorded during a task with low and high levels of response conflict in 78 children/adolescents (7–15 years old) with ADHD, autism, comorbid ADHD+autism, or neurotypical. ANOVA models were used to investigate effects of ADHD and autism, while a mediation model was tested to clarify the relationship between ADHD and slower performance. Slower and less accurate performance characterized ADHD and autism; however, atypical electrophysiological indices differently characterized these conditions. The relationship between ADHD and slower task performance was mediated by reduced HRV in response to the cue stimulus. Autonomic hypo-arousal and difficulties in mobilizing energetic resources in response to sensory information (associated with ADHD), and atypical electrophysiological indices of information processing (associated with autism), might negatively affect cognitive performance in those with ADHD+autism.

scholarly journals The relationship between Gulf War Illness symptom severity and heart rate variability: A pilot study

Life Sciences ◽  
2021 ◽  
pp. 119663
Author(s):  
Kyle J. Jaquess ◽  
Nathaniel Allen ◽  
Timothy J. Chun ◽  
Lucas Crock ◽  
Alexander A. Zajdel ◽  
...  
Keyword(s):  
Heart Rate ◽  
Heart Rate Variability ◽  
Pilot Study ◽  
Symptom Severity ◽  
Gulf War ◽  
Gulf War Illness ◽  
The Relationship

scholarly journals Sex differences in associations between insulin resistance, heart rate variability, and arterial stiffness in healthy women and men: a physiology study

2017 ◽  
Vol 95 (4) ◽  
pp. 349-355 ◽  
Author(s):  
Luke Anthony Rannelli ◽  
Jennifer M. MacRae ◽  
Michelle C. Mann ◽  
Sharanya Ramesh ◽  
Brenda R. Hemmelgarn ◽  
...  
Keyword(s):  
Insulin Resistance ◽  
Heart Rate ◽  
Heart Rate Variability ◽  
Sex Differences ◽  
Arterial Stiffness ◽  
Spectral Power ◽  
Applanation Tonometry ◽  
Healthy Population ◽  
Model Assessment ◽  
Healthy Women

Diabetes confers greater cardiovascular risk to women than to men. Whether insulin-resistance-mediated risk extends to the healthy population is unknown. Measures of insulin resistance (fasting insulin, homeostatic model assessment, hemoglobin A1c, quantitative insulin sensitivity check index, glucose) were determined in 48 (56% female) healthy subjects. Heart rate variability (HRV) was calculated by spectral power analysis and arterial stiffness was determined using noninvasive applanation tonometry. Both were measured at baseline and in response to angiotensin II infusion. In women, there was a non-statistically significant trend towards increasing insulin resistance being associated with an overall unfavourable HRV response and increased arterial stiffness to the stressor, while men demonstrated the opposite response. Significant differences in the associations between insulin resistance and cardiovascular physiological profile exist between healthy women and men. Further studies investigating the sex differences in the pathophysiology of insulin resistance in cardiovascular disease are warranted.

Self-Perceived Emotional Intelligence and Creative Personality

2002 ◽  
Vol 21 (4) ◽  
pp. 293-309 ◽  
Author(s):  
Uwe Wolfradt ◽  
Jörg Felfe ◽  
Torsten Köster
Keyword(s):  
Emotional Intelligence ◽  
Personality Traits ◽  
Factor Model ◽  
Five Factor Model ◽  
Thinking Styles ◽  
Verbal Intelligence ◽  
Rational Form ◽  
Intelligence Scale ◽  
Perceived Emotional Intelligence ◽  
The Relationship

This study examines the relationship between self-perceived emotional intelligence (EI) measured by the Emotional Intelligence Scale (EIS) [1] and other personality measures including the five-factor-model. The EI construct has lately been re-defined as the ability to think intelligently about emotions and to use them to enhance intelligent thinking [2]. Two studies provide support that self-reported EI is mainly associated with personality traits (extraversion, agreeableness, conscientiousness, self-perceived creativity), life satisfaction and thinking styles with only a low relation to verbal intelligence. Furthermore, persons higher in the EI dimension “emotional efficacy” produced more creative performances than persons low in this domain. These findings suggest that self-reported EI cannot be considered as a rational form of intelligence so that it does qualify to fit into the framework of personality traits.

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