Three old words
भाव
Bhāva
affective response
What the room itself carries.
स्पन्द
Spanda
resonance, attunement
How it meets your nervous system.
सङ्केत
Saṅketa
signal, perceptual cue
What we read and give back to you.
In the product
The Cathedral Effect
Meyers-Levy & Zhu, 2007 · ākāśa (आकाश), the open quality of dwelling space
In Meyers-Levy and Zhu's studies, ceiling height changed how people thought: air overhead nudged them toward big-picture, creative thinking, while lower ceilings pulled them into focus and detail. The ceiling is not decoration; it quietly sets the mode the mind works in.
What we read: We estimate the ceiling's height from the photographs themselves, not from the staging.
Prospect and Refuge
Appleton, 1975 · Hildebrand, 1991 · dṛṣṭi-koṇa (दृष्टि-कोण), the angle of sight
Appleton's prospect-refuge theory says people relax in rooms where they can see far while feeling tucked in: the window seat, the corner sofa. Long sightlines from a sheltered spot go with lower vigilance and deeper rest. See without being seen, and the body stands down.
What we read: We look for the longest line of sight in each room.
Biophilic Stress Reduction
Ulrich, 1984 · Kaplan & Kaplan, 1989 · vana (वन), the view of the forest
A view of green may be medicine. In Ulrich's landmark hospital study, patients facing trees recovered faster than patients facing a brick wall, and later work keeps linking window greenery to a calmer stress system. Physiology, not decoration.
What we read: We read the green in every photograph, and the green around the home.
The Lens
Our own method · māyā (माया), the illusion the lens creates
A wide-angle lens makes a small room look like a loft; it is the whole grammar of listing photography. Read as it is shot, every space looks a little more generous than it is.
What we read: We allow for the lens before we judge the space, so a room is never flattered.
In research
Light Direction and the Body Clock
Lockley · Brainard · sūrya-mukha (सूर्यमुख), sun-facing aspect
Which way the windows face decides when daylight arrives. Circadian research links gentle morning light with a well-set body clock, while harsh evening light can push sleep later. Same flat, different windows, different sleep.
Threshold and Place Memory
O'Keefe (Nobel, 2014) · Bachelard, 1958 · gṛha-praveśa (गृहप्रवेश), the entry into a dwelling
O'Keefe's work on place cells showed the brain maps a place from sequences of doorways and turns. The way you enter a home may shape whether it is remembered as home or as the building you live in.
Sound and Sleep
Basner et al., 2014 · śabda (शब्द), the field of sound
Noise you sleep through still costs you. Sleep research links sound barely above a quiet library's hum with broken deep sleep, even when it never wakes you. A street is loud or quiet long before your first night in it.
How to read this page
Every effect here is either in the product today or in active research, and says which. No claim sits on this page that the product does not earn.
These are population-level findings: they describe how people tend to respond, not how you will. What we read from photographs is an estimate, not a measurement. It is decision support, not a structural survey, a medical claim, or a substitute for visiting.
Used in HabitatSignal, our first product.