Heart–Brain Mood Board
Hello

How is your heart feeling right now?

Take a breath, then tap whatever fits best.

Pleasant

Difficult

Demo — physiological readout is simulated unless a watch is paired

❤

Listening to your heart…

  • Reading HRV signal
  • Filtering motion artefact
  • Cross-referencing your mood

Heart–Brain Mood Board
— coherence
— Residual heart rate

Heart rhythm

coherenterratic

Does this reading match how you feel?

Biochemical modulators

Without a paired watch, rhythm, coherence, HR and modulator levels are simulated from the selected mood for demo purposes.

Heart–Brain Mood Board

Your journey

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Log your first mood and your journey starts here.

Heart–Brain Mood Board

The science

A two-way dialogue between heart and brain

❤ 🧠 heart → brain brain → heart
0neurons in the heart’s “little brain”
2channels: nerves & hormones
4key references
1 Neuroscience · 2025

The heart thinks along with the mind

Max Planck Institute

  • 🧠The heart has its own nerve cells
  • 💭It shapes how we think and feel
  • 🔗Links heart disease and mental illness
§2 · §5 Read article
2 Physiology · 2018

The Female Heart

Frontiers in Physiology · ECG response to stress

  • 📈Mental stress changes heart-rate variability
  • ⚖️Men and women respond differently
§3 · §4a Read paper
3 Overview

The Heart and Brain Connection

Norwest Chiropractic

⚡Nervesheart ↔ brain signals
🧪Hormonesoxytocin, adrenaline, dopamine
§3 Read article
4 Theological relevance

The heart as the seat of revelation

عَلَىٰ قَلْبِكَ لِتَكُونَ مِنَ ٱلْمُنذِرِينَ ﴿١٩٤﴾

“Upon your heart, that you may be of the warners.”
Ash-Shu‘araa 26:192–194

مَا كَذَبَ ٱلْفُؤَادُ مَا رَأَىٰ ﴿١١﴾

“The heart lied not in what it saw.”
An-Najm 53:11–12 · Al-Isra wal-Mi‘raj
§6 · A purified heart receives revelation

§ = section of the research paper