MuzicăWhy the exact parameters of a track matter, physiologically
Clinical research consistently shows that music's effect on the body doesn't depend on genre or declared intent ("relaxing", "energizing"), but on measurable acoustic parameters — tempo, key, dynamics, structure. These are exactly the parameters SC Pozitron Grup SRL measures and certifies for every track.
Documented physiological mechanisms
Autonomic nervous system
Fast tempo and the absence of pauses increase pulmonar ventilation, blood pressure and heart rate above baseline; slow tempo and pauses reduce these same parameters below baseline, through a parasympathetic relaxation effect — tempo matters more than musical style.
Bernardi et al., Heart, 2006
The stress hormone axis
Relaxing music stops the rise of salivary cortisol after a psychological stress test, unlike silence, where levels keep climbing. A meta-analysis of 104 trials and 9,617 participants confirms a significant effect on heart rate, blood pressure and stress hormones.
Khalfa et al., 2003 · de Witte et al., Health Psychology Review, 2020
The neurochemical system
Listening to music engages neurochemical systems tied to reward and motivation (dopamine), stress and arousal regulation, immunity and social affiliation — the mechanism behind the well-being effects consistently reported in the clinical literature.
Chanda & Levitin, Trends in Cognitive Sciences, 2013
Pain perception
A meta-analysis of 73 randomized trials shows music reduces postoperative pain, anxiety and analgesic use, and increases patient satisfaction — even when listened to under general anaesthesia.
Hole et al., The Lancet, 2015
Clinical evidence, by application area
Preoperative anxiety
The Cochrane review shows music listening can be as effective as midazolam for reducing preoperative anxiety, heart rate and blood pressure.
Bradt, Dileo & Shim, Cochrane, 2013
Stress & physiological regulation
Significant effect on heart rate, blood pressure and stress hormones, confirmed across 104 randomized trials and over 9,600 participants.
de Witte et al., 2020
Sleep
Music improves subjective sleep quality in adults with insomnia symptoms, as measured on the Pittsburgh Sleep Quality Index (PSQI).
Jespersen et al., Cochrane, 2015/2022
Postoperative recovery
Reduces pain, anxiety and analgesic use; increases patient satisfaction, regardless of the type of music chosen.
Hole et al., Lancet, 2015
Depression
Added to standard treatment, music therapy reduces depressive symptoms and anxiety and improves psychic state.
Aalbers et al., Cochrane, 2017
Performance & sport
Meta-analysis of 139 studies: music improves affective state, physical performance, and reduces perceived exertion.
Terry et al., Psychological Bulletin, 2020
Why "sounding" relaxing isn't enough
The same research that shows music's benefits also shows how sensitive the effect is to its exact parameters: tempo raises or lowers heart rate, blood pressure and breathing proportionally; mode (major/minor) changes reported arousal independently of tempo; and genre interacts with tempo — the same tempo increase can activate a listener differently depending on style.
The practical conclusion: a track that's "relaxing" by intent, but with the wrong tempo, key or dynamics, can produce the opposite of the intended effect. That's why a track can't be correctly labeled from its title or the composer's intent alone — it needs an objective measurement of its actual parameters.
That's exactly what SC Pozitron Grup SRL's certification provides: the acoustic-emotional analysis measures BPM, key, energy, valence and arousal directly from the audio file, then verifies whether these parameters fall within the target profile of the declared state (relaxation, energizing, deep sleep, etc.) — before the certificate is issued.
Bibliography
- Bradt J, Dileo C, Shim M. „Music interventions for preoperative anxiety." Cochrane Database of Systematic Reviews, 2013;(6):CD006908. ↗
- de Witte M, Spruit A, van Hooren S, Moonen X, Stams GJ. „Effects of music interventions on stress-related outcomes: a systematic review and two meta-analyses." Health Psychology Review, 2020;14(2):294-324. ↗
- Bernardi L, Porta C, Sleight P. „Cardiovascular, cerebrovascular, and respiratory changes induced by different types of music in musicians and non-musicians: the importance of silence." Heart, 2006;92(4):445-452. ↗
- Jespersen KV, Koenig J, Jennum P, Vuust P. „Music for insomnia in adults" (actualizat: „Listening to music for insomnia in adults"). Cochrane Database of Systematic Reviews, 2015 (actualizat 2022), CD010459. ↗
- Chanda ML, Levitin DJ. „The neurochemistry of music." Trends in Cognitive Sciences, 2013;17(4):179-193. ↗
- Hole J, Hirsch M, Ball E, Meads C. „Music as an aid for postoperative recovery in adults: a systematic review and meta-analysis." The Lancet, 2015;386(10004):1659-1671. ↗
- Khalfa S, Bella SD, Roy M, Peretz I, Lupien SJ. „Effects of relaxing music on salivary cortisol level after psychological stress." Annals of the New York Academy of Sciences, 2003;999:374-376. ↗
- Aalbers S, Fusar-Poli L, Freeman RE, et al. „Music therapy for depression." Cochrane Database of Systematic Reviews, 2017;(11):CD004517. ↗
- Terry PC, Karageorghis CI, Curran ML, Martin OV, Parsons-Smith RL. „Effects of music in exercise and sport: A meta-analytic review." Psychological Bulletin, 2020;146(2):91-117. ↗
- Dillman Carpentier FR, Potter RF. „Effects of Music on Physiological Arousal: Explorations into Tempo and Genre." Media Psychology, 2007;10(3):339-363. ↗