Perceptually unidentifiable stimuli influence cortical processing and behavioral performance

Cortical processing of near-threshold tactile stimuli: an MEG study.

In the present study we tested the applicability of a paired-stimulus paradigm for the investigation of near-threshold (NT) stimulus processing in the somatosensory system using magnetoencephalography. Cortical processing of the NT stimuli was studied indirectly by investigating the impact of NT stimuli on the source activity of succeeding suprathreshold test stimuli. We hypothesized that corti...

1 1 Behavioral Training Enhances Cortical Temporal Processing in

1 Behavioral Training Enhances Cortical Temporal Processing in Neonatally 2 Deafened Juvenile Cats 3 4 5 Ralph E. Beitel, Maike Vollmer , Marcia W. Raggio , Christoph E. Schreiner 1 6 7 1 Epstein Laboratory, Department of Otolaryngology-Head and Neck Surgery, 8 University of California, San Francisco, California, USA 9 2 Comprehensive Hearing Center, Department of Otolaryngology, Head and Neck ...

Cepstral analysis of perceptually rated synthetic disordered speech stimuli

Temporally extended dopamine responses to perceptually demanding reward-predictive stimuli.

Midbrain dopamine neurons respond to reward-predictive stimuli. In the natural environment reward-predictive stimuli are often perceptually complicated. Thus, to discriminate one stimulus from another, elaborate sensory processing is necessary. Given that previous studies have used simpler types of reward-predictive stimuli, it has yet to be clear whether and, if so, how dopamine neurons obtain...

Dysperiodicity Analysis of Perceptually Assessed Synthetic Speech Stimuli

The objective is to analyze vocal dysperiodicities in perceptually assessed synthetic speech sounds. The analysis involves a variogram-based method that enables tracking instantaneous vocal dysperiodicities. The dysperiodicity trace is summarized by means of the signal-to-dysperiodicity ratio, which has been shown to correlate strongly with the perceived degree of hoarseness of the speaker. The...