A mathematical model of stress reaction: Individual differences in threshold and duration
Апстракт
People differ in what they experience as stressful and to what extent. We define a variable-stress threshold (sigma)-that links the hypothalamo-pituitary-adrenocortical (HPA) axis and the memory system in a feedback mechanism. Current sigma dictates the intensity of a stimulus that turns the stress response on. On the other hand, each "jump" of the HPA axis helps long-term registration of the stressful event via concentration changes of some of its products, consequently changing the value of sigma for future stressors. After the action of a strong exterior stressor, the new stressful memory acts as an internal source of stress. We assume that its intensity decreases with the rate of processing the stressful information. This process is characterized by a time parameter tau. Both sigma and tau are individual: They depend on personality traits, genetic as well as acquired. The mathematical model presented here simulates the feedback mechanism between the HPA axis and the memory system i...nvolved in stress reaction.
Извор:
Psychobiology, 2000, 28, 4, 581-592Издавач:
- Psychonomic Soc Inc, Austin
DOI: 10.3758/BF03332017
ISSN: 0889-6313
WoS: 000166656200015
Scopus: 2-s2.0-0034493498
Институција/група
Psihologija / PsychologyTY - JOUR AU - Savić, D AU - Knežević, Goran AU - Opačić, Goran PY - 2000 UR - http://reff.f.bg.ac.rs/handle/123456789/311 AB - People differ in what they experience as stressful and to what extent. We define a variable-stress threshold (sigma)-that links the hypothalamo-pituitary-adrenocortical (HPA) axis and the memory system in a feedback mechanism. Current sigma dictates the intensity of a stimulus that turns the stress response on. On the other hand, each "jump" of the HPA axis helps long-term registration of the stressful event via concentration changes of some of its products, consequently changing the value of sigma for future stressors. After the action of a strong exterior stressor, the new stressful memory acts as an internal source of stress. We assume that its intensity decreases with the rate of processing the stressful information. This process is characterized by a time parameter tau. Both sigma and tau are individual: They depend on personality traits, genetic as well as acquired. The mathematical model presented here simulates the feedback mechanism between the HPA axis and the memory system involved in stress reaction. PB - Psychonomic Soc Inc, Austin T2 - Psychobiology T1 - A mathematical model of stress reaction: Individual differences in threshold and duration EP - 592 IS - 4 SP - 581 VL - 28 DO - 10.3758/BF03332017 ER -
@article{ author = "Savić, D and Knežević, Goran and Opačić, Goran", year = "2000", abstract = "People differ in what they experience as stressful and to what extent. We define a variable-stress threshold (sigma)-that links the hypothalamo-pituitary-adrenocortical (HPA) axis and the memory system in a feedback mechanism. Current sigma dictates the intensity of a stimulus that turns the stress response on. On the other hand, each "jump" of the HPA axis helps long-term registration of the stressful event via concentration changes of some of its products, consequently changing the value of sigma for future stressors. After the action of a strong exterior stressor, the new stressful memory acts as an internal source of stress. We assume that its intensity decreases with the rate of processing the stressful information. This process is characterized by a time parameter tau. Both sigma and tau are individual: They depend on personality traits, genetic as well as acquired. The mathematical model presented here simulates the feedback mechanism between the HPA axis and the memory system involved in stress reaction.", publisher = "Psychonomic Soc Inc, Austin", journal = "Psychobiology", title = "A mathematical model of stress reaction: Individual differences in threshold and duration", pages = "592-581", number = "4", volume = "28", doi = "10.3758/BF03332017" }
Savić, D., Knežević, G.,& Opačić, G.. (2000). A mathematical model of stress reaction: Individual differences in threshold and duration. in Psychobiology Psychonomic Soc Inc, Austin., 28(4), 581-592. https://doi.org/10.3758/BF03332017
Savić D, Knežević G, Opačić G. A mathematical model of stress reaction: Individual differences in threshold and duration. in Psychobiology. 2000;28(4):581-592. doi:10.3758/BF03332017 .
Savić, D, Knežević, Goran, Opačić, Goran, "A mathematical model of stress reaction: Individual differences in threshold and duration" in Psychobiology, 28, no. 4 (2000):581-592, https://doi.org/10.3758/BF03332017 . .