On methods in the analysis of profile data

Greenhouse, Samuel W.; Geisser, Seymour

doi:10.1007/bf02289823

Cited by 4,510 publications

(2,266 citation statements)

References 11 publications

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“…We used the same analysis in order to test the early ERP effects. Where necessary, the Greenhouse-Geisser method (Greenhouse and Geisser, 1959) was used to correct the violation of sphericity assumption. We used Tukey HSD as a post-hoc test.…”

Section: Resultsmentioning

confidence: 99%

Saliency or template? ERP evidence for long-term representation of word stress

Honbolygó

Csépe

2013

International Journal of Psychophysiology

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The present study investigated the event-related brain potential (ERP) correlates of word stress processing. Previous results showed that the violation of a legal stress pattern elicited two consecutive Mismatch Negativity (MMN) components synchronized to the changes on the first and second syllable. The aim of the present study was to test whether ERPs reflect only the detection of salient features present on the syllables, or they reflect the activation of long-term stress related representations.We examined ERPs elicited by pseudowords with no lexical representation in two conditions: the standard having a legal stress patterns, and the deviant an illegal one, and the standard having an illegal stress pattern, and the deviant a legal one. We found that the deviant having an illegal stress pattern elicited two consecutive MMN components, whereas the deviant having a legal stress pattern did not elicit MMN.Moreover, pseudowords with a legal stress pattern elicited the same ERP responses irrespective of their role in the oddball sequence, i.e., if they were standards or deviants.The results suggest that stress pattern changes are processed relying on long-term representation of word stress. To account for these results, we propose that the processing of stress cues is based on language-specific, pre-lexical stress templates.

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Section: Resultsmentioning

confidence: 99%

Saliency or template? ERP evidence for long-term representation of word stress

Honbolygó

Csépe

2013

International Journal of Psychophysiology

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“…The scalp surface was divided into six groups of six electrodes each: frontocentral (F1, Fz, F2, FC1, FCz and FC2), centroparietal (CP1, CPz, CP2, P1, Pz and P2), left temporal (AF7, F7, F5, FT7, T7 and AF3), right temporal (AF8, F6, F8, FT8, T8 and AF4), left posterior (TP7, CP5, CP3, P7, P5 and P3) and right posterior (TP8, CP6, CP4, P8, P6 and P4). The GreenhouseGeisser correction was applied (Greenhouse & Geisser, 1959) and the corrected p values are reported below.…”

Section: Resultsmentioning

confidence: 99%

Behavioral and electrophysiological evidence for the impact of regional variation on phoneme perception

et al. 2009

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a b s t r a c tThis event-related potential (ERP) study examined the impact of phonological variation resulting from a vowel merger on phoneme perception. The perception of the /e/-/e/ contrast which does not exist in Southern French-speaking regions, and which is in the process of merging in Northern French-speaking regions, was compared to the /ø/-/y/ contrast, which is stable in all French-speaking regions. French-speaking participants from Switzerland for whom the /e/-/e/ contrast is preserved, but who are exposed to different regional variants, had to perform a same-different task. They first heard four phonemically identical but acoustically different syllables (e.g., /be/-/be/-/be/-/be/), and then heard the test syllable which was either phonemically identical to (/be/) or phonemically different from (/be/) the preceding context stimuli. The results showed that the unstable /e/-/e/ contrast only induced a mismatch negativity (MMN), whereas the /ø/-/y/ contrast elicited both a MMN and electrophysiological differences on the P200. These findings were in line with the behavioral results in which responses were slower and more error-prone in the /e/-/e/ deviant condition than in the /ø/-/y/ deviant condition. Together these findings suggest that the regional variability in the speech input to which listeners are exposed affects the perception of speech sounds in their own accent.

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“…However, since that result would pertain to this data set only, and would not generalize to a larger data set, we report the more general classification result, as shown in Table 5. (Greenhouse and Geisser, 1959), which corrects for com pound symmetry violations in ANOVA.…”

Section: Resultsmentioning

confidence: 99%

Altered Cerebral Blood Flow and Glucose Metabolism in Patients with Liver Disease and Minimal Encephalopathy

Lockwood¹,

Yap²,

Rhoades³

et al. 1991

J Cereb Blood Flow Metab

142

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Summary:We measured CBF and the CMRglc in normal controls and in patients with severe liver disease and ev idence for minimal hepatic encephalopathy using positron emission tomography. Regions were defined in frontal, temporal, parietal, and visual cortex; the thalamus; the caudate; the cerebellum; and the white matter along with a whole-slice value obtained at the level of the thalamus. There was no difference in whole-slice CBF and CMRglc values. Individual regional values were normalized to the whole-slice value and subjected to a two-way repeated measures analysis of variance. When normalized CBF and CMRglc values for regions were compared between groups, significant differences were demonstrated (F = 5.650, p = 0.00014 and F = 4.58 , p = 0.0073, respec-

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On methods in the analysis of profile data

Cited by 4,510 publications

References 11 publications

Saliency or template? ERP evidence for long-term representation of word stress

Saliency or template? ERP evidence for long-term representation of word stress

Behavioral and electrophysiological evidence for the impact of regional variation on phoneme perception

Altered Cerebral Blood Flow and Glucose Metabolism in Patients with Liver Disease and Minimal Encephalopathy

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