# The Semantic Bottleneck: Leveraging Semantic Representations for Non-Invasive Speech Decoding > Source: > Published: 2026-09-10 12:00:26+00:00 Non-invasive speech decoding remains constrained by the low signal-to-noise ratio of neural recordings, which makes fine-grained reconstruction of phonemes or individual words difficult. Motivated by neuroscientific evidence that high-level semantic representations are distributed across cortical re