Wang Flashcards
(20 cards)
What was the aim of Wang et al.’s study?
To use FMRI to measure cerebral blood flow changes in response to mild to moderate stress
What was the sample in Wang et al.’s study?
25 experimental group and 7 control group
What did participants in the experimental group do before the experiment?
Rested for 15 minutes
How many scans did each participant undergo in Wang et al.’s study?
4 scans followed by a full anatomical scan
What characterized Scan 1 in the study?
Baseline scan
What was the condition of Scan 2?
Low stress condition where participants counted back from 1000
What task did participants perform during Scan 3?
Serial subtraction of 13 from a 4-digit number
What was the purpose of repeating the second and third scans in the same order?
To eliminate contamination of the control condition due to higher levels of emotion from high stress task
How did the control group differ from the experimental group in terms of tasks?
Control group completed the same length scans but without the high stress task
What scale was used to measure self-reported stress levels?
Self report stress scale (1-9)
This scale helps quantify perceived stress levels in participants.
What physiological samples were collected from participants?
Saliva samples
Saliva samples were collected immediately after entering the scanner and after the stress tasks.
What metrics did participants report after the stress tasks?
Level of effort, frustration, and task difficulty
These metrics provide insights into the subjective experience of stress.
How often was heart rate recorded during the study?
Every 2 minutes
This frequent measurement allows for monitoring physiological responses to stress.
What does VENTRAL RPFC stand for?
Ventral prefrontal cortex
APFC is involved in various cognitive and emotional processes.
What role does the ventral prefrontal cortex (vPFC) play according to the results?
Central role in coordinating a range of biological and behavioral stress responses
This highlights the vPFC’s importance in stress regulation.
What emotions are associated with hippocampal activation?
Negative emotions such as sadness and fear
This indicates a link between stress and emotional responses.
What was observed about the sustained activation of the vPFC and related brain regions?
Continued activation even after the end of stress tasks
This suggests ongoing stress responses and vigilance.
What does the study conclude about psychological stress?
Leads to negative emotions
This conclusion emphasizes the emotional impact of stress.
What is a suitable approach to measure stress according to the study?
fMRI
Functional MRI (fMRI) is highlighted as an effective method for assessing stress responses.
True or False: The ventral prefrontal cortex plays a minor role in stress response.
False
The study indicates a significant role for the ventral prefrontal cortex in stress responses.
