Heart Rate Variability: Physiology & Methods (Part 1/5)

This seminar is Part 1 of an in-depth series on Heart Rate Variability offered for free by Harvard Medical School's Dr. Andrew Ahn. In this session, Dr. Ahn explores:
1- The various HRV measures and their utilization in clinical studies
2- The technological and methodological limitations of HRV
3- The foundational context from which citizen scientists can begin exploring HRV
Timestamps:
0:00 - 2.34 Intro to PhysioQ
2:34 - 8:38 Divergent views of HRV
8:39 - 11-54 HRV Publications by Discipline
11:54 - 13:15 Talk Outline
13:15 - 18:14 Balance of Autonomic NS
18:14 - 21:39 Physiological Source of HRV
21:39 - 22:38 Summary of HRV Measures
22:39 - 27:45 Freq domain Measures
27:45 - 33:04 SA Node Cellular Mechanism
33:04 - 38:17 Signal Processing
38:17 - 42:32 Dynamics of SA Node
42:32 - 48:30 Implications of HRV Dynamics
48:30 - 53:26 Vagal Brake
53:26 - 56:50 Time Domain Measures
56:50 - 59:00 Interpreting Time Domain Measures
59:00 - 1:00:56 Session Recap
WATCH PART 2 HERE: www.labfront.com/course/hrv-2
WATCH PART 3 HERE: www.labfront.com/course/hrv-3
Speaker Bio:
Dr. Ahn is an internal medicine physician with a background in physics/engineering and physiological signal analyses. He is an Assistant Professor in Medicine & Radiology at Harvard Medical School and is also the Chief Medical/Science Officer at Labfront.
You can follow Dr. Ahn on Twitter @AndrewCAhn2
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Labfront is the all-in-one research solution that helps you manage your participants remotely while capturing powerful, real-world data.
Get started with a free account at www.labfront.com
Visit Labfront's blog to check out research case studies, browse validation research, learn best practices, and stay up to date about grant opportunities: www.labfront.com/blog
Head to Labfront Academy for educational resources to learn more and achieve more in the digital health ecosystem, including an entire HRV collection: www.labfront.com/academy
Review Labfront's suite of data analytics tools that help researchers get insights without the need for coding (including HRV reports): www.labfront.com/research/dat...

[@physioq7590]

Part 3 is now available from our partners Labfront. Watch here: ua-cam.com/video/FVmBm6sc-h0/v-deo.html

[@grantbenham8673]

Quite possibly the best UA-cam video on HRV that I've been able to find. A clear and well-structured overview that nicely integrates the history, physiology, and metrics. I plan to share it with my research assistants as a great introduction to a rather complex topic. I hope Dr. Ahn + PhysioQ continue the series beyond Part 1 and 2!

[@physioq7590]

Glad you enjoyed it! You can now register for part 3--coming in March: www.eventbrite.com/e/heart-rate-variability-series-part-3-tickets-274619663807

[@grantbenham8673]

Thanks!

[@rifkiwijaya5949]

this is what i am looking for, thank you dr ahn, you make me see tons of paper by seeing your slide and video. hope to see you in person to tell my research.

[@physioq7590]

Glad you enjoyed it, Rifki! We'll pass along your kind message to Dr. Ahn.

[@dr.vivekmodi]

Looking forward to Part 3

[@physioq7590]

You're in luck because part 3 is coming in March. You can register here for the live session: www.eventbrite.com/e/heart-rate-variability-series-part-3-tickets-274619663807

[@JM-pr6wq]

Great talk! Thank you so much for sharing.

[@matthewdewar8044]

This is incredible. Thank you for sharing this series.

[@physioq7590]

Glad you enjoy it!

[@225rip]

Very good explanation Sir.

[@physioq7590]

Thank you so much! We will pass along the kind words :)

[@aminsinichi]

Super useful talk!

[@physioq7590]

Glad it was helpful! You can check out Part 2 (www.labfront.com/course/hrv-2) and 3 (www.labfront.com/course/hrv-3) if you haven't already.

[@wiltonptremigio2988]

This is wonderful. Could it be that the vagal withdrawal is in response to pressure receptors in the NTS at the level of the medulla which would inhibit vagus transiently?

[@dustpan1]

How well do you think HRV is for managing adrenal insufficiency and tapering off of hydrocortisone?

[@malinijoshi5517]

Is there a way to measure the HRV in the operating room

[@physioq7590]

To my knowledge, no. The devices used in the OR have data that are proprietary and locked behind a firewall, thus making it exceedingly difficult for users to calculate HRV using a separate analytical software- not to mention the technical challenges of calculating it in real-time. To my knowledge, these device manufacturers don't usually offer HRV in their packages, but I could be wrong. - Andrew