---
title: Does the jaw jerk reflex change during the menstrual cycle? | Niyora
description: The jaw jerk reflex was generally consistent across the menstrual cycle, though it tended to be slightly weaker at the end of the cycle.
url: https://niyora.com/research/papers/reproducibility-of-the-human-masseteric-jaw-jerk-reflex-in-association-with-the-1993/
---

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- Does the jaw jerk reflex change during the menstrual cycle?

Survey study, 1993

# Does the jaw jerk reflex change during the menstrual cycle?

The jaw jerk reflex was generally consistent across the menstrual cycle, though it tended to be slightly weaker at the end of the cycle.

 Early or limited evidence

5 young women

## What they did

Researchers tested the jaw jerk reflex in 5 young women. They measured the reflex at three sessions under the same conditions: two sessions between day 7 and day 15 of the menstrual cycle, and one session in the last 5 days of the cycle.

## What they found

Both the timing and duration of the jaw jerk reflex were generally consistent over time. Occasional variations between sessions occurred, with a general tendency for weaker responses in the end-cycle session.

## What it means for you

The jaw jerk reflex is mostly stable throughout your menstrual cycle, though it may be slightly weaker near the end. The main limitation is that only 5 women were tested.

5

young women tested

3

measurement sessions

7-15, last 5

menstrual cycle days

## About the study

Original title Reproducibility of the human masseteric jaw-jerk reflex in association with the menstrual cycle Authors Kossioni AE, Karkazis HC Journal Archives of oral biology Year 1993 Study design Survey study Read the paper [doi.org/10.1016/0003-9969(93)90172-i](https://doi.org/10.1016/0003-9969(93)90172-i)

## Topics

[Premenstrual syndrome (PMS)](https://niyora.com/research/topics/condition-pms/)

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