The N2 and P3 components of the event-related potential (ERP) are putative markers of inhibition in the Go/NoGo task. If this is the case, they should be unaffected by stimulus presentation modality. Theoretical researchers have suggested that the effect is smaller or absent with auditory stimuli, while others have shown that the effect depends on the perceptual similarity of the stimuli. Meanwhile, clinical researchers appear to be unaware of the debate. This study examined the N2 and P3 NoGo effects elicited by five sets of auditory stimuli varying in perceptual similarity. The N2 NoGo effect was significant for similar and different letters, and for similar tones, but not for different tones or novel sounds. As expected by the perceptual overlap hypothesis, the largest N2 NoGo effect was observed with the similar letters. In contrast, the P3 NoGo effect was significant and of a similar magnitude for all stimulus sets. The differential effect of the stimulus sets suggests separable underlying processes reflected in N2 and P3. Guidelines are provided for clinical researchers wishing to use auditory stimuli in the Go/NoGo task.
We present a method for determining the background of Fermi GBM GRBs using
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Background over relatively short timescales, this method is particular...
We have extended our earlier study (Heard & Warwick 2013, Paper I) of the
X-ray emission emanating from the central 100 pc x 100 pc region of our Galaxy
To an investigation of several features prominent in the soft X-ray (2-4.5 keV)
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We analyse the relation between the emotions and the activity of contributors
In the Open Source Software project Gentoo. Our case study builds on extensive
Data sets from the project's bug tracking platform Bugzilla, to quantify the
Activity of contributors, and its mail archives, to quantify the e...
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