Sympathetic contributions to habituation and recovery of the cardiac defense response
| Autor: | Alba Garrido, Isis González Usera, Jaime Vila, José Luis Mata, Stefan Duschek, Javier Rodríguez Árbol |
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| Rok vydání: | 2020 |
| Předmět: |
Adult
Male medicine.medical_specialty Adolescent Repeated stimulation 050105 experimental psychology Young Adult 03 medical and health sciences 0302 clinical medicine Heart Rate Auditory stimulation Internal medicine Heart rate Humans Medicine 0501 psychology and cognitive sciences Cardiac control Habituation Habituation Psychophysiologic Defense Mechanisms business.industry General Neuroscience 05 social sciences Healthy subjects Middle Aged Pre ejection period Neuropsychology and Physiological Psychology Acoustic Stimulation Time course Cardiology Female business 030217 neurology & neurosurgery |
| Zdroj: | Biological Psychology. 151:107846 |
| ISSN: | 0301-0511 |
| Popis: | The cardiac defense response (CDR) to intense auditory stimulation is characterized by two acceleration-deceleration heart rate (HR) components. This study investigated contributions of sympathetic cardiac control to habituation and recovery of the CDR. Fifty-six healthy subjects were presented with noise stimuli eliciting the CDR. Three stimuli were presented with short and long (2.5 min and 12.5 min) inter-trial intervals (ITIs). The pre-ejection period was recorded as an index of sympathetic cardiac control, in addition to HR. Repeated stimulation at short ITI was associated with marked habituation of the HR and sympathetic responses; both responses exhibited a degree of recovery with long ITI. Regarding the time course, the first acceleration-deceleration was accompanied by a decline and subsequent increase in sympathetic cardiac control. During the second acceleration-deceleration, the parameters exhibited parallel courses. These results suggest that the sympathetic contribution to the habituation and recovery is limited to the second HR component. |
| Databáze: | OpenAIRE |
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