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The Pulse of Singapore: Short-Term HRV Norms
This study examines HRV of healthy Singapore sample, with ages ranging from 10 to 89 years. Short-term HRV of five minutes was measured from 2,143 participants. 974 males and 1,169 females, and overall HRV was found to be 42.4ms (RMSSD) and 52.0 ms (SDNN) with a further breakdown of HRV by age and gender. Overall HRV declined with age and gender, although gender differences dissipated in the 60s age range onwards, with the 50s age range having the sharpest decline in HRV. Short-term HRV norms were similar to Nunan et al. ’s (2010) systematic review in various populations and less similar to Choi et al. ’s (2020) study ...
Source: Applied Psychophysiology and Biofeedback - September 27, 2023 Category: Psychiatry Source Type: research

An Estimation Formula for Resonance Frequency Using Sex and Height for Healthy Individuals and Patients with Incurable Cancers
Appl Psychophysiol Biofeedback. 2023 Sep 13. doi: 10.1007/s10484-023-09602-5. Online ahead of print.ABSTRACTResonance frequency breathing is a technique that involves breathing that maximizes heart rate variability. It is specific to individuals and is determined through a procedure taking approximately 30 min, using a procedure that is often best carried out at specialized medical institutions. This is a physical and time-consuming burden because of hospital visits and measurements, particularly for patients with cancer. Therefore it would be beneficial if a procedure can be found to determine resonance frequency from the...
Source: Applied Psychophysiology and Biofeedback - September 13, 2023 Category: Psychiatry & Psychology Authors: Hideaki Hasuo Keita Mori Hiromichi Matsuoka Hiroko Sakuma Hideki Ishikawa Source Type: research

An Estimation Formula for Resonance Frequency Using Sex and Height for Healthy Individuals and Patients with Incurable Cancers
AbstractResonance frequency breathing is a technique that involves breathing that maximizes heart rate variability. It is specific to individuals and is determined through a procedure taking approximately 30 min, using a procedure that is often best carried out at specialized medical institutions. This is a physical and time-consuming burden because of hospital visits and measurements, particularly for patients with cancer. Therefore it would be beneficial if a procedure can be found to determine reso nance frequency from the patient’s physical characteristics, without the need for special assessment procedures. This e...
Source: Applied Psychophysiology and Biofeedback - September 13, 2023 Category: Psychiatry Source Type: research

Decoding the Debate: A Comparative Study of Brain-Computer Interface and Neurofeedback
Appl Psychophysiol Biofeedback. 2023 Aug 4. doi: 10.1007/s10484-023-09601-6. Online ahead of print.ABSTRACTBrain-Computer Interface (BCI) and Neurofeedback (NF) both rely on the technology to capture brain activity. However, the literature lacks a clear distinction between the two, with some scholars categorizing NF as a special case of BCI while others view BCI as a natural extension of NF, or classify them as fundamentally different entities. This ambiguity hinders the flow of information and expertise among scholars and can cause confusion. To address this issue, we conducted a study comparing BCI and NF from two perspe...
Source: Applied Psychophysiology and Biofeedback - August 4, 2023 Category: Psychiatry & Psychology Authors: Mohammad H Mahrooz Farrokh Fattahzadeh Shahriar Gharibzadeh Source Type: research