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- Title
Cortical detection of stimuli presented from different angles: The/''Spatial Change Complex/".
- Authors
Beynon, Andy J.; Noordeloos, Suzan E.
- Abstract
Objectives: Besides behavioral tests, spatial perception can also be assessed with electrophysiological techniques like MMN (see MMN paper, IERASG2015). To question is whether, analogous to ACC, it is possible to use SVPs to assess different angles perception. Material and methods: Spatial perception was assessed using broadband noise stimuli with intra-stimulus spatial change of ±30 and +90 degrees. Additionally, subjective responses, but also recordings were repeated with unilateral ear plugging. Results: EEG shows new cortical EPs (spatial change complex') at different angles. In earplugged condition, SCC was still recognized, but not statistically significant, assuming disturbed perception in conformity with behavioural responses. Conclusions: It is possible to obtain auditory cortical responses reflecting the perception of spatial changes in the sound field, simpler and faster than MMN, that can be used as a measure for detection of spatial changes within a stimulus.
- Subjects
AUDITORY evoked response; AUDITORY perception; BEHAVIOR; ELECTROENCEPHALOGRAPHY; ELECTROPHYSIOLOGY; NOISE; SPACE perception; ACOUSTIC stimulation
- Publication
Journal of Hearing Science, 2017, Vol 7, Issue 2, p53
- ISSN
2083-389X
- Publication type
Article