Neuronal populations in the occipital cortex of the blind synchronize to the temporal dynamics of speech
- University of Trento, Italy
- University of Louvain, Belgium
Figures
Figure 1
Cerebro-acoustic coherence in EB and SI.
(A) Segments from each condition (nat, 8-channel, and 1-channel) in the time domain (see also Video 1). Overlaid is the amplitude envelope of each condition. (B) Spectrogram of the speech samples …
Figure 2
Occipital-temporal connectivity in EB and SI.
(A) Spectra illustrate the phase locking between CS and STG in EB (dark curve) and in SI (light curve). Shaded areas illustrate the SEM. A difference between the curves is observed in the theta …
Videos
Video 1
Movie of the natural and two vocoding conditions used for one exemplar of auditory segment used in our experiment.
https://doi.org/10.7554/eLife.31640.007Tables
Table 1
Proportion of correct responses for the story comprehension questions.
Depicted are the number of subjects (N) in the early blind (EB) and sighted individuals (SI) groups, the mean (M), and the standard error of the mean (SE) for each of the three conditions (Natural, …
| Natural | 8-channel | 1-channel | |||||
|---|---|---|---|---|---|---|---|
| Group | N | M | SE | M | SE | M | SE |
| EB | 17 | 0.899 | 0.019 | 0.853 | 0.031 | 0.559 | 0.027 |
| SI | 15 | 0.914 | 0.020 | 0.890 | 0.025 | 0.576 | 0.034 |
Table 2
MNI (Montreal Neurological Institute) coordinates and p-values for the three contrasts tested with threshold-free cluster enhancement (TFCE).
https://doi.org/10.7554/eLife.31640.005| MNI-coordinates (mm) | ||||
|---|---|---|---|---|
| p-value (FWE-cor) | x | y | z | |
| Intelligibility | ||||
| Superior temporal gyrus | 0.027 | 64 | −16 | 0 |
| Blindness | ||||
| Posterior cingulate | 0.030 | 8 | −40 | 40 |
| Postcentral sulcus | 0.033 | 16 | −32 | 64 |
| Precuneus | 0.033 | -8 | −64 | 48 |
| Blindness x intelligibility | ||||
| Calcarine sulcus | 0.007 | 16 | −88 | 0 |
Additional files
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Transparent reporting form
- https://doi.org/10.7554/eLife.31640.008
