P Alku

Summary

Affiliation: Helsinki University of Technology
Country: Finland

Publications

  1. pmc Disentangling the effects of phonation and articulation: hemispheric asymmetries in the auditory N1m response of the human brain
    Hannu Tiitinen
    Apperception and Cortical Dynamics, Department of Psychology, University of Helsinki, POB 9, FIN 00014, Finland
    BMC Neurosci 6:62. 2005
  2. ncbi request reprint Estimation of the voice source from speech pressure signals: evaluation of an inverse filtering technique using physical modelling of voice production
    Paavo Alku
    Helsinki University of Technology, Espoo, Finland
    Folia Phoniatr Logop 58:102-13. 2006
  3. ncbi request reprint Normalized amplitude quotient for parametrization of the glottal flow
    Paavo Alku
    Helsinki University of Technology, Laboratory of Acoustics and Audio Signal Processing, Finland
    J Acoust Soc Am 112:701-10. 2002
  4. ncbi request reprint Parameterization of the voice source by combining spectral decay and amplitude features of the glottal flow
    P Alku
    Department of Applied Physics, University of Turku, Finland
    J Speech Lang Hear Res 41:990-1002. 1998
  5. ncbi request reprint Evidence of the significance of secondary excitations of the vocal tract for vocal intensity
    P Alku
    Acoustics Laboratory, Helsinki University of Technology, Finland
    Folia Phoniatr Logop 53:185-97. 2001
  6. ncbi request reprint The periodic structure of vowel sounds is reflected in human electromagnetic brain responses
    P Alku
    Acoustics Laboratory, Helsinki University of Technology, 5 A, FIN 02015 TKK, Otakaari, Finland
    Neurosci Lett 298:25-8. 2001
  7. ncbi request reprint A method for generating natural-sounding speech stimuli for cognitive brain research
    P Alku
    Helsinki University of Technology, Acoustics Laboratory, Finland
    Clin Neurophysiol 110:1329-33. 1999
  8. doi request reprint Asymmetrical representation of auditory space in human cortex
    Nelli H Salminen
    Department of Biomedical Engineering and Computational Science, Helsinki University of Technology, Finland
    Brain Res 1306:93-9. 2010
  9. doi request reprint Representation of the vocal roughness of aperiodic speech sounds in the auditory cortex
    Santeri Yrttiaho
    Department of Signal Processing and Acoustics, Helsinki University of Technology, P O Box 3000, FI 02015 TKK, Finland
    J Acoust Soc Am 125:3177-85. 2009
  10. pmc Sensitivity of the human auditory cortex to acoustic degradation of speech and non-speech sounds
    Ismo Miettinen
    Department of Biomedical Engineering and Computational Science, Aalto University School of Science and Technology, Espoo, Finland
    BMC Neurosci 11:24. 2010

Detail Information

Publications59

  1. pmc Disentangling the effects of phonation and articulation: hemispheric asymmetries in the auditory N1m response of the human brain
    Hannu Tiitinen
    Apperception and Cortical Dynamics, Department of Psychology, University of Helsinki, POB 9, FIN 00014, Finland
    BMC Neurosci 6:62. 2005
    ....
  2. ncbi request reprint Estimation of the voice source from speech pressure signals: evaluation of an inverse filtering technique using physical modelling of voice production
    Paavo Alku
    Helsinki University of Technology, Espoo, Finland
    Folia Phoniatr Logop 58:102-13. 2006
    ..The goal of the study is to use physical modelling of voice production to assess the performance of an inverse filtering method in estimating the glottal flow from acoustic speech pressure signals...
  3. ncbi request reprint Normalized amplitude quotient for parametrization of the glottal flow
    Paavo Alku
    Helsinki University of Technology, Laboratory of Acoustics and Audio Signal Processing, Finland
    J Acoust Soc Am 112:701-10. 2002
    ..Experiments with breathy, normal, and pressed vowels indicate that NAQ is also able to separate the type of phonation effectively...
  4. ncbi request reprint Parameterization of the voice source by combining spectral decay and amplitude features of the glottal flow
    P Alku
    Department of Applied Physics, University of Turku, Finland
    J Speech Lang Hear Res 41:990-1002. 1998
    ..PSA yields a single parameter that characterizes the glottal flow in different loudness conditions. By analyzing voices of 8 speakers it was shown that the new parameter correlates strongly with the sound pressure level of speech...
  5. ncbi request reprint Evidence of the significance of secondary excitations of the vocal tract for vocal intensity
    P Alku
    Acoustics Laboratory, Helsinki University of Technology, Finland
    Folia Phoniatr Logop 53:185-97. 2001
    ..Hence, ERME shows that effects of secondary excitations of the vocal tract that occur during glottal opening become important in the production of very loud voices...
  6. ncbi request reprint The periodic structure of vowel sounds is reflected in human electromagnetic brain responses
    P Alku
    Acoustics Laboratory, Helsinki University of Technology, 5 A, FIN 02015 TKK, Otakaari, Finland
    Neurosci Lett 298:25-8. 2001
    ..Thus, we conclude that speech production mechanisms have significant effects on human brain dynamics as reflected by magnetoencephalography and electroencephalograph...
  7. ncbi request reprint A method for generating natural-sounding speech stimuli for cognitive brain research
    P Alku
    Helsinki University of Technology, Acoustics Laboratory, Finland
    Clin Neurophysiol 110:1329-33. 1999
    ..In response to the rapidly increasing interest in using human voice in cognitive brain research, a new method, semisynthetic speech generation (SSG), is presented for generation of speech stimuli...
  8. doi request reprint Asymmetrical representation of auditory space in human cortex
    Nelli H Salminen
    Department of Biomedical Engineering and Computational Science, Helsinki University of Technology, Finland
    Brain Res 1306:93-9. 2010
    ....
  9. doi request reprint Representation of the vocal roughness of aperiodic speech sounds in the auditory cortex
    Santeri Yrttiaho
    Department of Signal Processing and Acoustics, Helsinki University of Technology, P O Box 3000, FI 02015 TKK, Finland
    J Acoust Soc Am 125:3177-85. 2009
    ..Based on these findings, the representation of vocal jitter in the auditory cortex is suggested to be formed on the basis of reduced activity in periodicity-sensitive neural populations...
  10. pmc Sensitivity of the human auditory cortex to acoustic degradation of speech and non-speech sounds
    Ismo Miettinen
    Department of Biomedical Engineering and Computational Science, Aalto University School of Science and Technology, Espoo, Finland
    BMC Neurosci 11:24. 2010
    ..The amplitude resolution was impoverished by reducing the number of bits to represent the signal samples. Auditory evoked magnetic fields (AEFs) were measured in the left and right hemisphere of sixteen healthy subjects...
  11. ncbi request reprint Spatial processing in human auditory cortex: the effects of 3D, ITD, and ILD stimulation techniques
    Kalle J Palomäki
    Laboratory of Acoustics and Audio Signal Processing, Helsinki University of Technology, P O Box 3000, FIN 02015 HUT, Finland
    Brain Res Cogn Brain Res 24:364-79. 2005
    ..Thus, the activity taking place already in the auditory cortex predicts behavioral sound detection of spatial stimuli, and the amount of spatial cues embedded in the signal are reflected in the activity of this brain area...
  12. ncbi request reprint Emotions in vowel segments of continuous speech: analysis of the glottal flow using the normalised amplitude quotient
    Matti Airas
    Laboratory of Acoustics and Audio Signal Processing, Helsinki University of Technology HUT, Espoo, Finland
    Phonetica 63:26-46. 2006
    ..Results also demonstrated clear gender differences. Inverse filtering, together with NAQ, was shown to be a promising method for the analysis of emotional content in continuous speech...
  13. pmc A population rate code of auditory space in the human cortex
    Nelli H Salminen
    Department of Biomedical Engineering and Computational Science, Helsinki University of Technology, Helsinki, Finland
    PLoS ONE 4:e7600. 2009
    ..Previous work on the human auditory cortex has revealed areas specialized in spatial processing but how the neurons in these areas represent the location of a sound source remains unknown...
  14. doi request reprint Glottal inverse filtering with the closed-phase covariance analysis utilizing mathematical constraints in modelling of the vocal tract
    Paavo Alku
    Helsinki University of Technology, Department of Signal Processing and Acoustics, Otakaari 5A, PO Box 3000, FI 02015 TKK, Finland
    Logoped Phoniatr Vocol 34:200-9. 2009
    ..With these constraints, vocal tract models are less prone to show false low-frequency roots. Experiments show that the algorithm improves the robustness of the CP analysis on the covariance frame position...
  15. ncbi request reprint Automatic pre-segmentation of running speech improves the robustness of several acoustic voice measures
    Tom Bäckström
    Laboratory of Acoustics and Audio Signal Processing, Helsinki University of Technology, P O Box 3000, FIN 02015 HUT, Finland
    Logoped Phoniatr Vocol 28:101-8. 2003
    ..This paper presents results from the performance evaluation of the system, which shows that the analysis environment is able to perform robust and consistent measurements of continuous speech...
  16. ncbi request reprint Cortical processing of speech sounds and their analogues in a spatial auditory environment
    Kalle J Palomäki
    Speech and Hearing Research Group, Department of Computer Science, University of Sheffield, Sheffield, UK
    Brain Res Cogn Brain Res 14:294-9. 2002
    ....
  17. doi request reprint Closed phase covariance analysis based on constrained linear prediction for glottal inverse filtering
    Paavo Alku
    Department of Signal Processing and Acoustics, Helsinki University of Technology, P O Box 3000, FI 02015 TKK, Finland
    J Acoust Soc Am 125:3289-305. 2009
    ..The results show that the algorithm improves the performance of the CP-type inverse filtering and its robustness with respect to the covariance frame position...
  18. ncbi request reprint An amplitude quotient based method to analyze changes in the shape of the glottal pulse in the regulation of vocal intensity
    Paavo Alku
    Laboratory of Acoustics and Audio Signal Processing, Helsinki University of Technology, P O Box 3000, FIN 02015 TKK, Finland
    J Acoust Soc Am 120:1052-62. 2006
    ....
  19. doi request reprint Cortical sensitivity to periodicity of speech sounds
    Santeri Yrttiaho
    Department of Signal Processing and Acoustics, Helsinki University of Technology, PO Box 3300, FI 02015 TKK, Finland
    J Acoust Soc Am 123:2191-9. 2008
    ..The behavior of the N1m latency and the emergence of a response cascade at very low F0 values may reflect the lower limit of pitch perception...
  20. ncbi request reprint Subglottal pressure and normalized amplitude quotient variation in classically trained baritone singers
    Eva Björkner
    Laboratory of Acoustics and Audio Signal Processing, Helsinki University of Technology, Finland
    Logoped Phoniatr Vocol 31:157-65. 2006
    ..The vowel sounds following the selected Ps peaks were inverse filtered. Data on peak-to-peak pulse amplitude, maximum flow declination rate and NAQ are presented...
  21. ncbi request reprint Mismatch negativity shows that 3-6-year-old children can learn to discriminate non-native speech sounds within two months
    Marie Cheour
    Language and the Developing Brain Laboratory, Centre for Cognitive Neuroscience, University of Turku, Turku, Finland
    Neurosci Lett 325:187-90. 2002
    ..Accordingly, these data herald the vast potential MMN may entail for studying language learning, especially in situations where behavioral responses cannot be readily elicited...
  22. doi request reprint The role of musical aptitude and language skills in preattentive duration processing in school-aged children
    Riia Milovanov
    Department of English, University of Turku, Finland Centre for Cognitive Neuroscience, University of Turku, Finland
    Neurosci Lett 460:161-5. 2009
    ..Thus, our study provides further evidence for the claim that musical aptitude and linguistic skills are interconnected and the musical features of the stimuli could have a preponderant role in preattentive duration processing...
  23. ncbi request reprint Occupational voice complaints and objective acoustic measurements-do they correlate?
    Laura Lehto
    Laboratory of Acoustics and Audio Signal Processing, Helsinki University of Technology, Finland
    Logoped Phoniatr Vocol 31:147-52. 2006
    ..Also the self-reported voice symptoms increased significantly during the working day. However, correlations between vocal symptoms and acoustic measures were not found...
  24. ncbi request reprint Comparison of two inverse filtering methods in parameterization of the glottal closing phase characteristics in different phonation types
    Laura Lehto
    Laboratory of Acoustics and Audio Signal Processing, Helsinki University of Technology, Helsinki, Finland
    J Voice 21:138-50. 2007
    ..The results are encouraging in showing that the parameterization of the voice source in different speech sounds can be performed independently of the technique used for inverse filtering...
  25. ncbi request reprint The processing of speech and non-speech sounds in aphasic patients as reflected by the mismatch negativity (MMN)
    Titta Ilvonen
    Cognitive Brain Research Unit, Department of Psychology, University of Helsinki, Finland
    Neurosci Lett 366:235-40. 2004
    ..These results suggest that left-hemisphere lesions have differential effects on the discrimination of speech and acoustic features indicating that they have separate neural substrates...
  26. ncbi request reprint Neuromagnetic recordings reveal the temporal dynamics of auditory spatial processing in the human cortex
    Hannu Tiitinen
    Apperception and Cortical Dynamics ACD, Cognitive Science, Department of Psychology, P O Box 9, FIN 00014 University of Helsinki, Finland
    Neurosci Lett 396:17-22. 2006
    ..The latter activations, however, were specific to attentional engagement and motor responding. This suggests that parietal activation reflects active responding to a spatial sound rather than auditory spatial processing as such...
  27. ncbi request reprint Emotions in [a]: a perceptual and acoustic study
    Juhani Toivanen
    MediaTeam, University of Oulu and Academy of Finland
    Logoped Phoniatr Vocol 31:43-8. 2006
    ..Human listeners thus apparently need longer speech samples than vowel-length units for reliable emotion discrimination than the machine, which utilizes quantitative parameters effectively for short speech samples...
  28. ncbi request reprint Context modulates processing of speech sounds in the right auditory cortex of human subjects
    Anu Kujala
    Cognitive Brain Research Unit, Department of Psychology, PO Box 13, University of Helsinki, FIN 00014, Helsinki, Finland
    Neurosci Lett 331:91-4. 2002
    ..This facilitation thus was insensitive to the phonetic and semantic features of the context but might nevertheless reflect the participation of the right hemisphere in speech perception...
  29. pmc The contribution of high frequencies to human brain activity underlying horizontal localization of natural spatial sounds
    Sakari Leino
    Apperception and Cortical Dynamics ACD, Department of Psychology, University of Helsinki, Finland
    BMC Neurosci 8:78. 2007
    ..Stimuli were presented to the subjects during MEG registration and in a behavioral listening experiment...
  30. ncbi request reprint High-speed registration of phonation-related glottal area variation during artificial lengthening of the vocal tract
    Anne Maria Laukkanen
    Department of Speech Communication and Voice Research, University of Tampere, Tampere, Finland
    Logoped Phoniatr Vocol 32:157-64. 2007
    ..In other parameters there were individual differences in tube length-related changes, suggesting complexity of the coupling between supraglottic space and the glottis...
  31. ncbi request reprint Sleeping newborns extract prosody from continuous speech
    Anke Sambeth
    Brain and Music Team, Cognitive Brain Research Unit, Department of Psychology, P O Box 9, FIN 00014, University of Helsinki, Finland
    Clin Neurophysiol 119:332-41. 2008
    ..Behavioral experiments show that infants use both prosodic and statistical cues in acquiring language. However, it is not yet clear whether these prosodic and statistical tools are already present at birth...
  32. ncbi request reprint Parameter-specific modulation of the mismatch negativity to duration decrement and increment: evidence for asymmetric processes
    Rika Takegata
    Cognitive Brain Research Unit, Department of Psychology, PO Box 9, University of Helsinki, Finland and Helsinki Brain Research Centre, Finland
    Clin Neurophysiol 119:1515-23. 2008
    ..Some asymmetries were reported in the previous studies; yet no systematical study has been conducted...
  33. ncbi request reprint The right-hemispheric auditory cortex in humans is sensitive to degraded speech sounds
    Lassi A Liikkanen
    Apperception and Cortical Dynamics ACD, Cognitive Science Unit, Department of Psychology, University of Helsinki, Finland
    Neuroreport 18:601-5. 2007
    ..Thus, the auditory cortex of right hemisphere might be particularly involved in processing degraded speech and possibly compensates for the poor signal quality by increasing its activity...
  34. doi request reprint Language impairment is reflected in auditory evoked fields
    Elina Pihko
    BioMag Laboratory, Hospital District of Helsinki and Uusimaa HUSLAB, Helsinki University Central Hospital, Helsinki, Finland
    Int J Psychophysiol 68:161-9. 2008
    ..The results indicate that the SLI group, having weaker responses to the onsets of sounds, might have slightly depressed sensory encoding...
  35. ncbi request reprint Sound complexity and 'speechness' effects on pre-attentive auditory discrimination in children
    Rita Ceponiene
    Cognitive Brain Research Unit, Department of Psychology, Meritullinkatu 1B, P O Box 13, 00014 University of Helsinki, Helsinki, Finland
    Int J Psychophysiol 43:199-211. 2002
    ..The discrimination of the sound duration appears to differ from that of the sound frequency in nature and, consequently, in the neural substrates...
  36. ncbi request reprint Human cortical dynamics determined by speech fundamental frequency
    Anna Mari Mäkelä
    Apperception and Cortical Dynamics, Department of Psychology, P O Box 13, FIN 00014, University of Helsinki, Finland
    Neuroimage 17:1300-5. 2002
    ....
  37. ncbi request reprint Mismatch negativity (MMN) elicited by changes in phoneme length: a cross-linguistic study
    Sari Ylinen
    Cognitive Brain Research Unit, Department of Psychology, University of Helsinki, P O Box 9, FIN 00014, Finland
    Brain Res 1072:175-85. 2006
    ..The second-language users, however, did not seem to have automatic access to Finnish prototypes...
  38. ncbi request reprint Subtitled videos and mismatch negativity (MMN) investigations of spoken word processing
    Catharine M Pettigrew
    Division of Speech Pathology, University of Queensland, Queensland, Australia
    J Am Acad Audiol 15:469-85. 2004
    ..e., subtitled) silent videos can be used as a distraction task for investigations into MMN responses to speech and nonspeech stimuli in young adult subjects, without affecting the amplitude of the responses...
  39. ncbi request reprint Automatic auditory processing of english words as indexed by the mismatch negativity, using a multiple deviant paradigm
    Catharine M Pettigrew
    Division of Speech Pathology, The University of Queensland, Brisbane, Queensland, Australia
    Ear Hear 25:284-301. 2004
    ..g., "day" and "gay") would elicit larger MMN responses than CV nonword deviants (e.g., "de" and "ge") within and across experimental contrasts...
  40. ncbi request reprint Glides in speech fundamental frequency are reflected in the auditory N1m response
    Anna Mari Mäkelä
    Apperception and Cortical Dynamics ACD, Department of Psychology, P O Box 9, FIN 00014 University of Helsinki, Finland
    Neuroreport 15:1205-8. 2004
    ..Thus, the speech-specific behavior of the N1m arises out of cortical sensitivity to the acoustic structure of voiced speech, that is to the F0 and its harmonics, which underlie the perception of pitch and intonation in speech...
  41. ncbi request reprint Estimating perceived phonatory pressedness in singing from flow glottograms
    Johan Sundberg
    Speech Music Hearing Department, KTH, Stockholm, Sweden
    J Voice 18:56-62. 2004
    ..Comparing the obtained mean rated pressedness ratings with the mean NAQ values for the various triads showed that about 73% of the variation in perceived pressedness could be accounted for by variations of NAQ...
  42. ncbi request reprint Automatic and controlled processing of acoustic and phonetic contrasts
    Elyse Sussman
    Department of Neuroscience and Department of Otolaryngology, Albert Einstein College of Medicine, 1410 Pelham Parkway S, Bronx, NY, USA
    Hear Res 190:128-40. 2004
    ..Differences occurred only in later stages associated with controlled processes. The effects of position and attention on speech and non-speech stimuli are discussed...
  43. ncbi request reprint Processing of English words with fine acoustic contrasts and simple tones: a mismatch negativity study
    Catharine M Pettigrew
    Department of Speech Pathology and Audiology, University of Queensland, QLD, Australia
    J Am Acad Audiol 15:47-66. 2004
    ....
  44. ncbi request reprint Neurophysiologic correlates of deficient phonological representations and object naming in prematurely born children
    Eira Jansson-Verkasalo
    Department of Finnish, Saami and Logopedics, University of, Oulu, Finland
    Clin Neurophysiol 115:179-87. 2004
    ..Furthermore, we investigated whether the mismatch negativity (MMN) parameters at the age of 4 years correlate with the MMN parameters and naming ability at the age of 6 years...
  45. ncbi request reprint The auditory N1m reveals the left-hemispheric representation of vowel identity in humans
    Anna Mari Mäkelä
    Apperception and Cortical Dynamics, Department of Psychology, Box 9, University of Helsinki, Helsinki, FIN 00014, Finland
    Neurosci Lett 353:111-4. 2003
    ..Thus, direct evidence for the orderly left-hemispheric representation of phonemes in human auditory cortex was found...
  46. ncbi request reprint Dynamic extremes of voice in the light of time domain parameters extracted from the amplitude features of glottal flow and its derivative
    Erkki Vilkman
    Phoniatric Department, ENT Clinic, Helsinki University Central Hospital POB 220, FIN 00029 HUCH Helsinki, Finland
    Folia Phoniatr Logop 54:144-57. 2002
    ....
  47. ncbi request reprint Magnetic fields evoked by speech sounds in preschool children
    Elina Pihko
    BioMag Laboratory, Helsinki University Central Hospital, P O Box 340, FIN 00029 HUS, Finland
    Clin Neurophysiol 116:112-9. 2005
    ....
  48. ncbi request reprint Long-term exposure to occupational noise alters the cortical organization of sound processing
    Elvira Brattico
    Cognitive Brain Research Unit, Department of Psychology, University of Helsinki, P O Box 9 Siltavuorenpenger 20 C, FIN 00014 Helsinki, Finland
    Clin Neurophysiol 116:190-203. 2005
    ..Long-term exposure to noise may cause an altered hemispheric lateralization of speech processing even in silent conditions. We examined whether this lateralization shift is speech specific or occurs also for other sounds...
  49. ncbi request reprint Left-hemispheric brain activity reflects formant transitions in speech sounds
    Anna Mari Mäkelä
    Apperception and Cortical Dynamics, Department of Psychology, University of Helsinki, Helsinki, Finland
    Neuroreport 16:549-53. 2005
    ..Thus, the present study demonstrates how magnetoencephalography can be used to investigate the spatiotemporal evolution in cortical activity related to the various stages of the processing of speech...
  50. ncbi request reprint Deficient speech-sound processing, as shown by the electrophysiologic brain mismatch negativity response, and naming ability in prematurely born children
    Eira Jansson-Verkasalo
    Department of Finnish, Saami and Logopedics, University of Oulu, FIN 90029 OYS, Finland
    Neurosci Lett 348:5-8. 2003
    ..Therefore, difficulties in auditory discrimination seem to be implicated in language difficulties encountered in VLBW prematurely born children...
  51. ncbi request reprint The discrimination of and orienting to speech and non-speech sounds in children with autism
    Tuulia Lepistö
    Cognitive Brain Research Unit, Department of Psychology, P O Box 9, University of Helsinki FIN 00014, Finland
    Brain Res 1066:147-57. 2005
    ..This has been proposed to be one of the earliest symptoms to emerge, with pervasive effects on later development...
  52. ncbi request reprint The perception of phonological quantity based on durational cues by native speakers, second-language users and nonspeakers of Finnish
    Sari Ylinen
    Cognitive Brain Research Unit, Department of Psychology, P O Box 9, FIN 00014, University of Helsinki, Finland
    Lang Speech 48:313-38. 2005
    ....
  53. ncbi request reprint Group intervention changes brain activity in bilingual language-impaired children
    Elina Pihko
    BioMag Laboratory, Helsinki University Central Hospital, Helsinki, Finland
    Cereb Cortex 17:849-58. 2007
    ..Our results show that, in children with SLI, the positive intervention effect is reflected in plastic changes in the brain activity of the left and right auditory cortices...
  54. ncbi request reprint Changes in objective acoustic measurements and subjective voice complaints in call center customer-service advisors during one working day
    Laura Lehto
    Laboratory of Acoustics and Signal Processing, Helsinki, Finland
    J Voice 22:164-77. 2008
    ..However, the results encourage researchers within the field of occupational voice use to apply versatile measurement techniques in studying occupational voice loading...
  55. ncbi request reprint Loading-related subjective symptoms during a vocal loading test with special reference to gender and some ergonomic factors
    Juha Vintturi
    Department of Otolaryngology and Phoniatrics, Helsinki University Central Hospital, Helsinki, Finland
    Folia Phoniatr Logop 55:55-69. 2003
    ..In these cases, females had more symptoms than males; the low-humidity group had more symptoms than the high-humidity group, and the standing subjects had more symptoms than the sitting subjects...
  56. ncbi request reprint The role of F3 in the vocal expression of emotions
    Teija Waaramaa
    Department of Speech Communication and Voice Research, University of Tampere, Finland
    Logoped Phoniatr Vocol 31:153-6. 2006
    ..063), lowered (p = 0.006) or removed F3 (p = 0.066). F3 may affect perception of valence if the signal has sufficient energy in high frequency range...
  57. ncbi request reprint The role of blind humans' visual cortex in auditory change detection
    Teija Kujala
    Helsinki Collegium for Advanced Studies, University of Helsinki, Finland
    Neurosci Lett 379:127-31. 2005
    ....
  58. ncbi request reprint Language context and phonetic change detection
    Istvan Winkler
    Department of General Psychology, Institute for Psychology, Hungarian Academy of Sciences, PO Box 398, Szondi u 83 85, H 1394 Budapest, Hungary
    Brain Res Cogn Brain Res 17:833-44. 2003
    ..Language context had no effect on the mismatch negativity ERP component elicited by the deviant word stimuli. This result suggests that language context does not affect the pre-attentive detection of auditory deviance...
  59. doi request reprint Visual speech contributes to phonetic learning in 6-month-old infants
    Tuomas Teinonen
    Department of Psychology, University of Helsinki, Helsinki, Finland
    Cognition 108:850-5. 2008
    ..These results not only show that visual information about speech articulation enhances phoneme discrimination, but also that it may contribute to the learning of phoneme boundaries in infancy...