Architecture makes this problem unusually acute because space is never encountered as an isolated variable. Curvature arrives with material, scale, light, programme, memory and cultural expectation; a window is simultaneously an aperture, a luminance condition, a view, an orientation device and a social threshold; a neighbourhood is at once infrastructure, routine, attachment, risk, access and collective history. The strongest recent work therefore moves away from the fantasy that architecture can be translated directly into neural prescriptions and toward an evidential ecology in which each measurement has a defined scope. Valentine’s work on physiological stress establishes the need to operationalise architectural form rigorously, then extends the temporal horizon through allostasis: environmental effects may accumulate through repeated exposure rather than appearing as instantaneous preference. Li and Xu’s review of neuroimaging converts spatial–emotional relations into candidate design parameters but simultaneously demonstrates why such thresholds remain provisional when EEG–VR paradigms dominate and real-world validation is scarce. Wei and colleagues sharpen the critique at the level of experimental construction itself: a photograph of a curvilinear interior is not curvature, because photographic composition, typology, aesthetic capital and imagined use contaminate the nominal variable. Their progression from images to objects to full-scale experience reframes design as an epistemic technology for producing controlled difference while progressively restoring embodiment. Grasso-Cladera and colleagues move furthest toward naturalistic neuroscience by treating everyday indoor environments as laboratories and coupling mobile physiological sensing with situated action. The important shift is from measuring a brain exposed to architecture toward measuring a brain–body system acting within architecture. Urban-scale studies complicate the field further. Xu and Meng’s third places show that restorative urban effects cannot be reduced to naturalness: socially active environments generate distinct pathways of pleasure, affiliation and wellbeing. Maestre’s recovery of imageability similarly extends neural questions toward orientation, memorability, physical activity and sense of place, while warning that a Lynchian urban concept cannot become a biomarker without standardised operationalisation. García-Mira’s psychological de-territorialisation provides the strongest scalar correction to reductive neuroarchitecture. Environmental transformation acts through employment, identity, memory, financial threat, participation and place attachment; the relevant “response” may be life satisfaction or the decision to leave a region rather than a fluctuation in EEG. Meng and Xu’s lockdown study reaches the same conclusion through crisis: when ordinary mobility collapses, housing, services and neighbourhood form reveal themselves as behavioural infrastructures whose adequacy is inseparable from resilience. Across these scales, evidence becomes architecturally meaningful only when the conditions of its production remain attached to it. Ecological validity is therefore not merely a demand for more realistic experiments. It is an epistemic principle governing the translation between representation and occupation, laboratory and city, short exposure and longitudinal life, individual physiology and social territory. A mature environmental neuroscience would not search for universal forms that mechanically produce wellness. It would construct comparable situations, preserve contextual variables, combine neural, physiological, behavioural and qualitative evidence, and state precisely the range within which a finding can travel. The design implication is substantial: architecture ceases to be a container subsequently evaluated by science and becomes a controlled yet situated medium through which relations among bodies, environments and meanings can be experimentally composed. For Socioplastics, this offers a particularly productive bridge. Spatial knowledge does not reside in the building or the nervous system alone; it emerges through repeated, instrumented and socially embedded encounters whose traces can move across disciplinary regimes only if their context, scale and transformation remain legible. Ecological validity thus becomes the condition under which spatial evidence can become transferable knowledge without being emptied of the world that made it evidential.
