A Task × Intelligibility interaction was observed in the left inferior frontal gyrus (including pars opercularis and triangularis) and anterior insula (inferior frontal gyrus and adjacent anterior insular cortex), extending up into the middle frontal gyrus, and in the dACC/SFG (Fig. 6).
In these studies, participants performed demanding speech identification or discrimination tasks, while intelligibility of the speech sounds was compromised by adding noise (Meister et al. 2007; D'Ausilio et al. 2009) or by manipulating formant transitions (Möttönen and Watkins 2009).
There were no voxels that survived the statistical threshold for the Session × Task, Session × Intelligibility, and Session × Task × Intelligibility interactions.
This task type measures intelligibility, fluency, content, coherence, and organization (Enright et al., 2008).
That there can be substantial differences between these tasks is illustrated by results obtained with the Coordinate Response Measure (CRM) task, a speech intelligibility task used extensively in studies of informational masking (Bolia, Nelson, Ericson & Simpson, 2000).
Festen and Plomp (1990) also compared different-sex with same-talker interference using a sentence intelligibility task and observed an SRT difference of no less than 6 10 dB.
This task type mainly measures intelligibility and fluency (Enright et al., 2008).
The initial analysis was a whole-brain Task (listening and repeating) × Intelligibility (clear and 3-channel noise-vocoded speech) × Session (before and after training) ANOVA.
Processing benefits have been observed in intelligibility and semantic priming tasks, whereas processing costs have been observed in lexical classification and form priming tasks.
Moreover, performance on an Information search task was impaired by speech with high intelligibility only.
The subject's task is to repeat the sentences, and intelligibility is measured in terms of correctly recognised key-words.
