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1. #Free download doctors in training step 2 2013 software
2. #Free download doctors in training step 2 2013 trial

The ripple density varied stepwise using a pseudo-logarithmic scale: 0.7, 1, 1.5, 2, 3, 5, 7, and 10 ripples/oct.

#Free download doctors in training step 2 2013 trial

After two successive correct detections of the test signal, the ripple density in the next trial increased by one step after every mistake, the ripple density in the next trial decreased by one step. The ripple density varied trial-by-trial adaptively, and a “two-up, one-down” version was used. The task of the CI user was to identify the test signal that differs from the other two. The order of the stimuli presentation was varied randomly, trial-by-trial. Each trial included three stimuli: one with ripples phase reversals (the test) and two with constant ripples phase (the references). In each run, the adaptive variation of the ripple density was performed using a three-alternative force-choice procedure with feedback. The learning effect was observed between 2 and 6 weeks, although an instantaneous learning effect during sessions was not detected.įor training, ripple-pattern discrimination runs were repeated. demonstrated a significant learning effect for the spectral-temporally modulated ripple test. reported a learning effect in normal-hearing listeners with CI simulation in noise. Later, the same research group demonstrated that although spectral-ripple discrimination remained constant over the first year after implantation, 20% of the individuals showed a significant improvement in spectral-ripple discrimination. reported that results of a spectral discrimination test remained stable over time. For the ripple discrimination test in quiet conditions, there was no learning effect after 12 repeated runs, but a learning effect was observed in noise. Previously, learning effects on solving ripple discrimination and detection tasks have been investigated. The results allow the suggestion that sound signals with rippled spectra could be used not only for testing rehabilitation results after CI but also for training CI users to discriminate sounds with complex spectra.Īpart from diagnostic application, rippled signals may be a tool for training CI users to extract information from stimuli generated by the CI. The increase in the percentage of recognized words was greater after training compared to the period before training. For five CI users who participated in the training program, the data on word recognition were also obtained earlier (at least eight months before training). The result of the speech discrimination test showed that the percentage of recognized words increased after training in nine out of ten CI users. There was no significant improvement in the control group. An improvement in the discrimination of the rippled spectrum was observed in all CI users from the experimental group. The experimental group was also tested for speech discrimination using phonetic material based on polysyllabic balanced speech material.

#Free download doctors in training step 2 2013 software

Software based on the phase reversal discrimination of rippled spectra was used. Ten of them used the software for training (the experimental group), and five did not (the control group).

Fifteen CI users participated in the study. We suggest that rippled-spectrum signals could be a basis for training CI users to improve speech intelligibility. In cochlear implant (CI) users, the discrimination of sound signals with rippled spectra correlates with speech discrimination.