The study is investigating the impact of progesterone and estrogen on brain areas that are involved with stress response and drug craving. The study will involve 40 women who will participate in the Montreal Imaging Stress Task (MIST) while undergoing fMRI scanning procedures. Half of the women will complete the procedures during the luteal phase of the menstrual cycle; the other half will complete procedures during the follicular phase. Subjective and physiological measures (cortisol levels) will be used to measure stress and craving response. Hypothesis 1A is that all women will exhibit increased craving, stress response, salivary cortisol and BNST and limbic nuclei activation in response to the MIST task. Hypothesis 1B is that these increased responses will be higher for women in the luteal phase than for women in the follicular phase of the menstrual cycle.
Study Type
INTERVENTIONAL
Allocation
NA
Purpose
OTHER
Masking
NONE
Enrollment
29
Math task developed to induce a stress response in a laboratory setting
Medical University of South Carolina
Charleston, South Carolina, United States
Blood oxygen level dependent (BOLD)signal activation in limbic brain regions
Exposure to the MIST task will increase activation in these brain areas as measured by fMRI scanning procedures, and the increase will be more pronounced for women in the luteal rather than follicular phase of the menstrual cycle.
Time frame: Scan visit, before and after MIST (day 1)
Stress response on 0-10 Likert scale
Participants are asked to rate stress on a 10-point Likert scale. It is hypothesized that subjective ratings will increase following the MIST task, and that the increase will be more pronounced for women in the luteal rather than follicular phase of the menstrual cycle.
Time frame: Scan visit, before and after MIST (day 1)
Subjective craving on 0-10 Likert scale
Participants are asked to rate craving on a 10-point Likert scale. It is hypothesized that craving greater after completion of the MIST than before the MIST task, and that the increase will be more pronounced for women in the luteal rather than follicular phase of the menstrual cycle.
Time frame: Scan visit, before and after MIST (day 1)
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