scholarly journals Effects of interoceptive accuracy in autonomic responses to external stimuli based on cardiac rhythm

PLoS ONE ◽  
2021 ◽  
Vol 16 (8) ◽  
pp. e0256914
Author(s):  
Yuto Tanaka ◽  
Yuri Terasawa ◽  
Satoshi Umeda
Keyword(s):  
Heart Rate ◽  
Auditory Stimulus ◽  
Nervous Activity ◽  
Autonomic Reactivity ◽  
Heart Rates ◽  
Cardiac Reactivity ◽  
Accuracy Study ◽  
Interoceptive Accuracy ◽  
Bodily State ◽  
External Stimuli

Interoceptive accuracy is an index of the ability to perceive an individual’s internal bodily state, including heartbeat and respiration. Individual differences in interoceptive accuracy influence emotional recognition through autonomic nervous activity. However, the precise mechanism by which interoceptive accuracy affects autonomic reactivity remains unclear. Here, we investigated how cardiac reactivity induced by a non-affective external rhythm differed among individuals, using a heartbeat counting task. Because individuals with poor interoceptive accuracy cannot distinguish an external rhythm from their cardiac cycles, it has been hypothesized that the interoceptive effect on heart rate works differently in individuals with good interoceptive accuracy and those with poor interoceptive accuracy. Study participants observed a visual or auditory stimulus presented at a rhythm similar to the participants’ resting heart rates. The stimulus rhythm was gradually changed from that of their resting heart rate, and we recorded electrocardiographs while participants were exposed to the stimuli. Individuals with good interoceptive accuracy exhibited a deceleration in heart rate when the rhythm of the auditory stimulus changed. In contrast, in the group with poor interoceptive accuracy, the heart rate decreased only when the stimulus became faster. They were unable to distinguish the rhythm of their own heartbeat from that of the external rhythm; therefore, we propose that such individuals recognize the stimuli at the pace of their heart rate. Individuals with good interoceptive accuracy were able to distinguish their heart rates from the external rhythm. A modality difference was not observed in this study, which suggests that both visual and auditory stimuli help mimic heart rate. These results may provide physiological evidence that autonomic reactivity influences the perception of the internal bodily state, and that interoception and the autonomic state interact to some degree.

scholarly journals Prospective memory mediated by interoceptive accuracy: a psychophysiological approach

2016 ◽  
Vol 371 (1708) ◽  
pp. 20160005 ◽  
Author(s):  
Satoshi Umeda ◽  
Saiko Tochizawa ◽  
Midori Shibata ◽  
Yuri Terasawa
Keyword(s):  
Working Memory ◽  
Task Performance ◽  
Prospective Memory ◽  
Nervous Activity ◽  
Memory Task ◽  
Cardiac Reactivity ◽  
The Individual ◽  
Interoceptive Accuracy ◽  
Event Based ◽  
The Relationship

Previous studies on prospective memory (PM), defined as memory for future intentions, suggest that psychological stress enhances successful PM retrieval. However, the mechanisms underlying this notion remain poorly understood. We hypothesized that PM retrieval is achieved through interaction with autonomic nervous activity, which is mediated by the individual accuracy of interoceptive awareness, as measured by the heartbeat detection task. In this study, the relationship between cardiac reactivity and retrieval of delayed intentions was evaluated using the event-based PM task. Participants were required to detect PM target letters while engaged in an ongoing 2-back working memory task. The results demonstrated that individuals with higher PM task performance had a greater increase in heart rate on PM target presentation. Also, higher interoceptive perceivers showed better PM task performance. This pattern was not observed for working memory task performance. These findings suggest that cardiac afferent signals enhance PM retrieval, which is mediated by individual levels of interoceptive accuracy. This article is part of the themed issue ‘Interoception beyond homeostasis: affect, cognition and mental health’.

scholarly journals Correlation of Human and Horse Heart Rates During Equine-Assisted Therapy Sessions with At-Risk Youths: A Pilot Study

2012 ◽  
Vol 1 (3) ◽  
pp. 22-25 ◽  
Author(s):  
Macy Drinkhouse ◽  
Sheri SW Birmingham ◽  
Robyn Fillman ◽  
Holly Jedlicka
Keyword(s):  
Heart Rate ◽  
Human Heart ◽  
Heart Rates ◽  
Therapeutic Benefits ◽  
Equine Assisted Therapy ◽  
Controlled Environments ◽  
External Stimuli ◽  
Rate Correlation ◽  
Equine Assisted ◽  
Therapy Sessions

Minimal research has been done to examine the cause of the positive results of animal-assisted therapy.  This study examines the correlation between horse and human heart rate, an involuntary stress response, which may allow the mechanisms of potential therapeutic benefits to be further understood. Horse and human heart rates were recorded during equine-assisted therapy sessions, compared, and the significance of human/horse heart rate correlation was documented. Results indicate that each incidence of correlating changes in the heart rates appeared to be the result of external stimuli. Findings are discussed and recommendations for future trials with controlled environments are made.

A Physiological Approach to the Study of Attachment: The Mother's Attention and Her infant's Heart Rate

1974 ◽  
Vol 8 (1) ◽  
pp. 3-7 ◽  
Author(s):  
Russell Meares ◽  
Thomas Horvath
Keyword(s):  
Heart Rate ◽  
Breast Feeding ◽  
The Other ◽  
Habituation Rate ◽  
Heart Rates ◽  
Other Hand ◽  
Physiological Approach ◽  
And Control ◽  
External Stimuli ◽  
Attachment Behaviour

Mothers and their neonatal babies were studied during breast-feeding and control periods. Those mothers whose attention to external stimuli diminished during feeding, when this was inferred from habituation rate, had babies whose heart rates significantly increased during feeding. On the other hand, mothers who did not show the expected relative inattention to external stimuli during feeding had babies whose heart rate did not significantly increase when they were fed. The possible relevance of these findings to the study of attachment behaviour is considered.

Nursing Diagnosis for Potential Organ Donors: Accuracy Study

2021 ◽  
pp. 105477382110194
Author(s):  
Luciana Nabinger Menna Barreto ◽  
Éder Marques Cabral ◽  
Marina Raffin Buffon ◽  
Juliana Elenice Pereira Mauro ◽  
Lisiane Pruinelli ◽  
...  
Keyword(s):  
Heart Rate ◽  
Diagnostic Accuracy ◽  
Medical Records ◽  
Heart Rhythm ◽  
Organ Donors ◽  
Predictive Capacity ◽  
Nursing Diagnosis ◽  
Accuracy Study ◽  
Altered Blood ◽  
Accuracy Data

The objective was to analyze the diagnostic accuracy of Impaired physiological balance syndrome in potential brain-dead organ donors. It is a study of diagnostic accuracy. Data was retrospectively collected from 145 medical records through the filling out of an instrument containing 25 indicators of the nursing diagnosis (ND). Descriptive and inferential statistics were used. The prevalence of the ND was 77 (53.1%). The indicator with the best measures of accuracy was altered heart rate. Therefore, it has the best predictive capacity for determining the ND. It was identified that the absence of the indicators altered heart rate, hyperglycemia, and altered blood pressure is associated with the absence of the ND, while the presence of the indicators hyperthermia, hypothermia, and altered heart rhythm is associated with the presence of the ND. Accurate indicators will assist in diagnostic inference and the interventions and results will have greater chances of targeting and effectiveness.

scholarly journals Heart Rate–Induced Myocardial Ca 2+ Retention and Left Ventricular Volume Loss in Patients With Heart Failure With Preserved Ejection Fraction

2020 ◽  
Vol 9 (17) ◽  
Author(s):  
Daniel N. Silverman ◽  
Mehdi Rambod ◽  
Daniel L. Lustgarten ◽  
Robert Lobel ◽  
Martin M. LeWinter ◽  
...  
Keyword(s):  
Heart Failure ◽  
Heart Rate ◽  
Ejection Fraction ◽  
Sinus Rhythm ◽  
Left Ventricular ◽  
Atrial Pacing ◽  
Preserved Ejection Fraction ◽  
Volume Loss ◽  
Heart Rates ◽  
Patients With Heart Failure

Background Increases in heart rate are thought to result in incomplete left ventricular (LV) relaxation and elevated filling pressures in patients with heart failure with preserved ejection fraction (HFpEF). Experimental studies in isolated human myocardium have suggested that incomplete relaxation is a result of cellular Ca 2+ overload caused by increased myocardial Na + levels. We tested these heart rate paradigms in patients with HFpEF and referent controls without hypertension. Methods and Results In 22 fully sedated and instrumented patients (12 controls and 10 patients with HFpEF) in sinus rhythm with a preserved ejection fraction (≥50%) we assessed left‐sided filling pressures and volumes in sinus rhythm and with atrial pacing (95 beats per minute and 125 beats per minute) before atrial fibrillation ablation. Coronary sinus blood samples and flow measurements were also obtained. Seven women and 15 men were studied (aged 59±10 years, ejection fraction 61%±4%). Patients with HFpEF had a history of hypertension, dyspnea on exertion, concentric LV remodeling and a dilated left atrium, whereas controls did not. Pacing at 125 beats per minute lowered the mean LV end‐diastolic pressure in both groups (controls −4.3±4.1 mm Hg versus patients with HFpEF −8.5±6.0 mm Hg, P =0.08). Pacing also reduced LV end‐diastolic volumes. The volume loss was about twice as much in the HFpEF group (controls −15%±14% versus patients with HFpEF −32%±11%, P =0.009). Coronary venous [Ca 2+ ] increased after pacing at 125 beats per minute in patients with HFpEF but not in controls. [Na + ] did not change. Conclusions Higher resting heart rates are associated with lower filling pressures in patients with and without HFpEF. Incomplete relaxation and LV filling at high heart rates lead to a reduction in LV volumes that is more pronounced in patients with HFpEF and may be associated with myocardial Ca 2+ retention.

Heart Rate and Performance in Manual Missile Guidance

1971 ◽  
Vol 32 (2) ◽  
pp. 352-354
Author(s):  
Bengt Bergstroem ◽  
Peter Arnberg
Keyword(s):  
Heart Rate ◽  
Performance Data ◽  
Tracking Performance ◽  
Missile Guidance ◽  
Heart Rates ◽  
Laboratory Conditions ◽  
Stress Studies ◽  
And Performance

Earlier stress studies under laboratory conditions show that heart rates from 100 to 110 bpm are associated with significant decrements in missile-tracking performance. Data from real missile tracking by 8 operators with no stress deliberately induced indicate, however, that performance is unaffected up to 135 bpm, and only moderately affected in the 135- to 170-bpm region. The disagreement between the two sets of results highlights the difficulties in generalizing from stress experiments.

Stress level in wild harbour porpoises (Phocoena phocoena) during satellite tagging measured by respiration, heart rate and cortisol

2009 ◽  
Vol 89 (5) ◽  
pp. 885-892 ◽  
Author(s):  
I.G. Eskesen ◽  
J. Teilmann ◽  
B.M. Geertsen ◽  
G. Desportes ◽  
F. Riget ◽  
...  
Keyword(s):  
Heart Rate ◽  
Respiration Rate ◽  
Serum Cortisol ◽  
Phocoena Phocoena ◽  
Heart Rates ◽  
Stress Effects ◽  
Respiration Rates ◽  
Stressed Animal ◽  
Cortisol Levels ◽  
Satellite Tagging

During satellite tagging of harbour porpoises (Phocoena phocoena), heart rate, respiration rate and cortisol value were measured to evaluate stress effects during handling and tagging. Respiration rates were obtained using video recordings, heart rates were recorded and serum cortisol levels were analysed from blood samples. Differences in heart rates, respiration rates and cortisol levels before and during the tagging events were investigated. An overall significant decrease of 31.5% in respiration rate was found during the tagging event period, while mature porpoises respired significantly more often than immature individuals. Though significant differences in heart rates were found for some individuals, no general significant change for all animals was detected. We found no correlation between cortisol concentration and either heart rate or respiration rate, nor did we find any relationships between cortisol and month of year, sex and body length. As high individual variations occurred in response to tagging of harbour porpoises, it is not possible to give general advice based on the factors investigated, on how to reduce stress during handling. However, pouring water over the animal and lowering it into the water seem to stabilize a stressed animal. Therefore, general precaution and individual judgement based on experience is essential when handling wild harbour porpoises.

Modifying effects of the R389G β1-adrenoceptor polymorphism on resting heart rate and blood pressure in patients with obstructive sleep apnoea

2005 ◽  
Vol 110 (1) ◽  
pp. 117-123 ◽  
Author(s):  
Jan Börgel ◽  
Tino Schulz ◽  
Nina K. Bartels ◽  
Jörg T. Epplen ◽  
Nikolaus Büchner ◽  
...  
Keyword(s):  
Blood Pressure ◽  
Heart Rate ◽  
Obstructive Sleep Apnoea ◽  
Nervous Activity ◽  
Sleep Apnoea ◽  
Cpap Therapy ◽  
Pressure Therapy ◽  
Obstructive Sleep ◽  
Significant Difference ◽  
The Impact

OSA (obstructive sleep apnoea) stimulates sympathetic nervous activity and elevates resting HR (heart rate) and BP (blood pressure). In the present study in a cohort of 309 untreated OSA patients, the resting HR and BP during the daytime were correlated with AHI (apnoea/hypopnea index) and compared with patients with R389R (n=162), R389G (n=125) and G389G (n=22) genotypes of the β1-adrenoreceptor R389G polymorphism. We analysed the impact of the genotype on the decline of HR and BP in a subgroup of 148 patients (R389R, n=86; R389G, n=54; G389G, n=8) during a 6-month follow-up period under CPAP (continuous positive airway pressure) therapy during which cardiovascular medication remained unchanged. In untreated OSA patients, we found an independent relationship between AHI and resting HR (β=0.096, P<0.001), systolic BP (β=0.09, P=0.021) and diastolic BP (β=0.059, P=0.016). The resting HR/BP, however, did not differ among carriers with the R389R, R389G and G389G genotypes. CPAP therapy significantly reduced HR [−2.5 (−1.1 to −4.0) beats/min; values are mean difference (95% confidence intervals)] and diastolic BP [−3.2 (−1.5 to −5.0) mmHg]. The decline in HR was more significantly pronounced in the R389R group compared with the Gly389 carriers [−4.1 (−2.3 to −5.9) beats/min (P<0.001) compared with −0.2 (2.1 to −2.6) beats/min (P=0.854) respectively; Student's t test between groups, P=0.008]. Diastolic BP was decreased significantly (P<0.001) only in Gly389 carriers (R389G or G389G) compared with R389R carriers [−5.0 (−2.3 to −7.6) mmHg compared with −2.0 (0.4 to −4.3) mmHg respectively]. ANOVA revealed a significant difference (P=0.023) in HR reduction between the three genotypes [−4.1 (±8.4) beats/min for R389R, −0.5 (±9.3) beats/min for R389G and +1.9 (±7.2) beats/min for G389G]. In conclusion, although the R389G polymorphism of the β1-adrenoceptor gene did not influence resting HR or BP in untreated OSA patients, it may modify the beneficial effects of CPAP therapy on these parameters.

Blunted Heart Rate Recovery to Spontaneous Nocturnal Arousals in Short Sleeping Adults

2021 ◽  
Author(s):  
Jeremy A. Bigalke ◽  
Ian M. Greenlund ◽  
Jennifer R. Nicevski ◽  
Carl A. Smoot ◽  
Benjamin Oosterhoff ◽  
...  
Keyword(s):  
Heart Rate ◽  
Heart Rate Recovery ◽  
Recovery Period ◽  
Sleep Time ◽  
Cardiovascular Complications ◽  
Female Age ◽  
Cardiac Reactivity ◽  
Electrocardiogram Ecg ◽  
The Relationship ◽  
At Home

Chronic insufficient sleep is a common occurrence around the world, and results in numerous physiological detriments and consequences, including cardiovascular complications. The purpose of the present study was to assess the relationship between habitual total sleep time (TST) measured objectively via at-home actigraphy and heart rate (HR) reactivity to nocturnal cortical arousals. We hypothesized that short habitual TST would be associated with exaggerated cardiac reactivity to nocturnal cortical arousals. Participants included in 35 healthy individuals (20 male, 15 female, age: 24 ± 1, BMI: 27 ± 1 kg/m2), and were split using a median analysis into short (SS; n = 17) and normal sleeping (NS; n = 18) adults based on a minimum of 7 days of at-home actigraphy testing. All participants underwent a full overnight laboratory polysomnography (PSG) testing session, including continuous HR (electrocardiogram, ECG) sampling. HR reactivities to all spontaneous cortical arousals were assessed for 20 cardiac cycles following the onset of the arousal in all participants. Baseline HR was not significantly different between groups (P > .05). Spontaneous nocturnal arousal elicited an augmented HR response in the SS group, specifically during the recovery period [F (4.192, 134.134) = 3.413, p = .01]. There were no significant differences in HR reactivity between sexes [F (4.006, 128.189) = .429, p > .05]. These findings offer evidence of nocturnal cardiovascular dysregulation in habitual short sleepers, independent from any diagnosed sleep disorders.

Anticipatory, exercise, and recovery heart rates of girls as affected by four running events

1964 ◽  
Vol 19 (5) ◽  
pp. 853-856 ◽  
Author(s):  
Vera Skubic ◽  
Jane Hilgendorf
Keyword(s):  
Heart Rate ◽  
Cardiac Function ◽  
Heart Rate Response ◽  
Heart Rates

The heart rate response to running various distances was studied using five highly trained girls as subjects. A telemetering instrument was employed so that the testing could be done under actual sport conditions. The findings indicated that 1) the anticipatory heart rate just prior to exercise represented 59% of the total adjustment to exercise, 2) the heart rates during exercise were 2.5 times the resting values, and 3) heart rates observed at the end of the 220-, 440-, 880-yard, and mile events were simila cardiac function; exercise Submitted on October 22, 1963

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