Stimulus-focused attention speeds up auditory processing
| Autor: | Balázs Fehér, Tímea Folyi, János Horváth |
|---|---|
| Rok vydání: | 2012 |
| Předmět: |
Male
medicine.medical_specialty Sensory system Audiology Stimulus (physiology) 050105 experimental psychology Young Adult 03 medical and health sciences Neural activity 0302 clinical medicine Event-related potential Physiology (medical) Sensation Reaction Time medicine Humans Attention 0501 psychology and cognitive sciences 10. No inequality Communication business.industry General Neuroscience 05 social sciences Single tone Frequency specificity Neuropsychology and Physiological Psychology Acoustic Stimulation Auditory Perception Evoked Potentials Auditory Auditory stimuli Female Psychology business 030217 neurology & neurosurgery |
| Zdroj: | International Journal of Psychophysiology. 84:155-163 |
| ISSN: | 0167-8760 |
| DOI: | 10.1016/j.ijpsycho.2012.02.001 |
| Popis: | Stimulus-focused attention enhances the processing of auditory stimuli, which is indicated by enhanced neural activity. In situations where fast responses are required, attention may not only serve as a means to gain more information about the relevant stimulus, but it may provide a processing speed gain as well. In two experiments we investigated whether attentional focusing decreased the latency of the auditory N1 event related potential. In Experiment 1 slowly emerging, soft (20 dB sensation level) sounds were presented in two conditions, in which participants performed a sound-detection task or watched a silent movie and ignored the sounds. N1 latency was shorter in the sound-detection task in comparison to the ignore condition. In Experiment 2 we investigated whether the attentional N1 latency-decrease was caused by a frequency-specific attentional preparation or not. To this end, tone sequences were presented with a single tone frequency or with four different frequencies. N1 latency was shorter in the sound-detection task in comparison to the ignore condition regardless the number of frequencies. These results suggest that stimulus-focused attention increases stimulus processing speed by generally increasing sensory gain. |
| Databáze: | OpenAIRE |
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