Degraded speech raises baseline listening effort independent of lexical competition effects

Evidence

A look at this figure suggests that the effort involved in lexical competition for DS was overall smaller for DS than for NS. This overall smaller increase in pupil dilation can be explained by the fact that these curves are normalized to a baseline of 200 ms preceding the presentation of each critical item per trial, participant and condition. Listening to degraded speech is by itself more effortful than listening to natural speech (e.g., Winn et al. 2015 ), and therefore there is a difference in the baseline between DS and NS. These differences in the baseline can be explained by the difference in processing degraded versus natural speech, and are independent of the effects of semantic integration on lexical competition. — Dijk, Pim van, Physiology, Psychoacoustics and…, 3994

Categorization

• corroborated: 2 independent passages support this claim — Dijk, Pim van, Physiology, Psychoacoustics and…, 3994