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Conference Paper
Trace-Verifiable Protocol Fidelity for Latency-Aware Behavioral Measurement in Closed-Loop Visual-to-Auditory Sensory Substitution
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- Authors
- Kyeong Deok Moon, Yun Kyung Park, Moo Seop Kim, Chi Yoon Jeong
- Issue Date
- 2026-07
- Citation
- International Conference of the IEEE Engineering in Medicine and Biology Society (EMBC) 2026, pp.1-1
- Publisher
- IEEE
- Language
- English
- Type
- Conference Paper
- Abstract
- Interpretable behavioral measurement in closed-loop sensory substitution requires verification that the intended protocol was delivered as executed. In visual-to-auditory sensory substitution (V2A-SS), this is critical because platform latency can affect both response-time endpoints and time-structured stimuli. We present a Specification-Driven, Engine-Invariant (SD-EI) framework that externalizes protocol intent and emits schema-anchored traces for post hoc verification. In an intervention-enabled controlled use case, supplemented by fault-injection diagnostics and a separate system-level timing test, SD-EI enabled verification of transition conformance, binding integrity, and intervention traceability. Latency characterization revealed state-dependent transformation delays of approximately 0.94 ms under warm conditions and 400.5 ms under cold conditions, indicating that unobserved system effects can substantially bias behavioral timing. These findings establish trace-verifiable protocol fidelity and latency-aware measurement as prerequisites for interpreting learning-related adaptation in V2A-SS neurorehabilitation studies.
- KSP Keywords
- Closed-loop, Cold conditions, Fault Injection, Response time(RT), Sensory Substitution, Warm conditions, latency-aware, state-dependent, system level, timing test, use cases