0 something that causes stress (= great worry or emotional difficulty): --
Constant noise can be a stressor.
In this sense, the response to a stressor is designed to be beneficial for the fish and involves all levels of animal organisation.
Thus, stressors during pregnancy are expected to alter the levels of multiple hormones and thereby may affect fetal development via the maternal - placental - fetal unit.
Environmental experiences are postulated to mediate effects on gene expression, including psychosocial stressors and the neurobiology of episode recurrence.
Most researchers studying life events aim to show that stressors cause increases in symptoms.
The distinction between major life events and transition-related stressors suggested here is one more step in this direction.
Do early-life events permanently alter behavioral and hormonal responses to stressors?
Responses were ranked according to the severity of stressors on a fully anchored fivepoint scale ranging from ' none ' (0) to ' severe ' (4).
A wealth of data has demonstrated the specificity of stressor-symptom relationships.
