T Ruusuvirta

Summary

Affiliation: University of Helsinki
Country: Finland

Publications

  1. ncbi request reprint The human brain processes repeated auditory feature conjunctions of low sequential probability
    Timo Ruusuvirta
    Cognitive Brain Research Unit, Department of Psychology, P O Box 9, University of Helsinki, 00014 Helsinki, Finland
    Neurosci Lett 355:97-100. 2004
  2. ncbi request reprint The fast detection of rare auditory feature conjunctions in the human brain as revealed by cortical gamma-band electroencephalogram
    T Ruusuvirta
    Cognitive Brain Research Unit, Department of Psychology, Siltavuorenpenger 20 C, P O Box 9, University of Helsinki, 00014 Helsinki, Finland
    Neuroscience 130:91-4. 2005
  3. ncbi request reprint Newborn human brain identifies repeated auditory feature conjunctions of low sequential probability
    Timo Ruusuvirta
    Cognitive Brain Research Unit, Department of Psychology, PO Box 9, FIN 00014 University of Helsinki, Helsinki, Finland
    Eur J Neurosci 20:2819-21. 2004
  4. ncbi request reprint The newborn human brain binds sound features together
    Timo Ruusuvirta
    Cognitive Brain Research Unit, Department of Psychology, PO Box 9, FIN 00014 University of Helsinki, Helsinki
    Neuroreport 14:2117-9. 2003
  5. ncbi request reprint From spatial acoustic changes to attentive behavioral responses within 200 ms in humans
    T Ruusuvirta
    Department of Psychology, University of Jyvaskyla, Finland
    Neurosci Lett 275:49-52. 1999
  6. ncbi request reprint Mismatch negativity for item rather than serial-order information in a 150-ms tone series that is not repeated as a melodic pattern
    T Ruusuvirta
    Cognitive Brain Research Unit, Department of Psychology, P O Box 9, Siltavuorenpenger 20C, 00014 University of Helsinki, Helsinki, Finland
    Neuroscience 147:968-73. 2007
  7. ncbi request reprint ERP and EOG responses elicited by deviant tones when presented with and without standard tones to reading subjects
    T Ruusuvirta
    Department of Psychology, University of Jyvaskyla, Jyvaskyla, Finland
    Int J Psychophysiol 42:279-86. 2001
  8. doi request reprint Dose-related effects of memantine on a mismatch negativity-like response in anesthetized rats
    D Tikhonravov
    Neuroscience Unit, Institute of Biomedicine Physiology, University of Helsinki, Helsinki, Finland
    Neuroscience 167:1175-82. 2010
  9. ncbi request reprint Processing of melodic contours in urethane-anaesthetized rats
    Timo Ruusuvirta
    Cognitive Brain Research Unit, Department of Psychology, PO Box 9, 00014 University of Helsinki, Helsinki, Finland
    Eur J Neurosci 26:701-3. 2007
  10. doi request reprint Mismatch negativity reflects numbers of tones of specific frequencies in humans
    Timo Ruusuvirta
    Cognitive Brain Research Unit, Department of Psychology, P O Box 13, University of Helsinki, 00014 Helsinki, Finland
    Neurosci Lett 436:138-40. 2008

Collaborators

Detail Information

Publications25

  1. ncbi request reprint The human brain processes repeated auditory feature conjunctions of low sequential probability
    Timo Ruusuvirta
    Cognitive Brain Research Unit, Department of Psychology, P O Box 9, University of Helsinki, 00014 Helsinki, Finland
    Neurosci Lett 355:97-100. 2004
    ..Differential scalp-recorded event-related potentials to deviants indicate that the standard variants were traced as repeated wholes despite their preperceptual distinctiveness and resulting rarity among one another...
  2. ncbi request reprint The fast detection of rare auditory feature conjunctions in the human brain as revealed by cortical gamma-band electroencephalogram
    T Ruusuvirta
    Cognitive Brain Research Unit, Department of Psychology, Siltavuorenpenger 20 C, P O Box 9, University of Helsinki, 00014 Helsinki, Finland
    Neuroscience 130:91-4. 2005
    ..Our finding suggests that, perhaps with the support of its non-phase-locked synchrony in the gamma band, the human brain is able to detect rare sounds as feature conjunctions very rapidly...
  3. ncbi request reprint Newborn human brain identifies repeated auditory feature conjunctions of low sequential probability
    Timo Ruusuvirta
    Cognitive Brain Research Unit, Department of Psychology, PO Box 9, FIN 00014 University of Helsinki, Helsinki, Finland
    Eur J Neurosci 20:2819-21. 2004
    ..This finding suggests that humans are relatively hard-wired to preattentively identify repeated auditory feature conjunctions even when such conjunctions occur rarely among other similar ones...
  4. ncbi request reprint The newborn human brain binds sound features together
    Timo Ruusuvirta
    Cognitive Brain Research Unit, Department of Psychology, PO Box 9, FIN 00014 University of Helsinki, Helsinki
    Neuroreport 14:2117-9. 2003
    ..Our finding suggests that the human brain is ready for auditory feature binding very soon after birth...
  5. ncbi request reprint From spatial acoustic changes to attentive behavioral responses within 200 ms in humans
    T Ruusuvirta
    Department of Psychology, University of Jyvaskyla, Finland
    Neurosci Lett 275:49-52. 1999
    ..The results are discussed in the context of endogenous ERPs and of attentive processes across sensory modalities...
  6. ncbi request reprint Mismatch negativity for item rather than serial-order information in a 150-ms tone series that is not repeated as a melodic pattern
    T Ruusuvirta
    Cognitive Brain Research Unit, Department of Psychology, P O Box 9, Siltavuorenpenger 20C, 00014 University of Helsinki, Helsinki, Finland
    Neuroscience 147:968-73. 2007
    ..MMN generation in the human brain thus seems to be based on item rather than serial-order information in a rapid spectro-temporal pattern of acoustic signals that is not repeated frequently in the short term...
  7. ncbi request reprint ERP and EOG responses elicited by deviant tones when presented with and without standard tones to reading subjects
    T Ruusuvirta
    Department of Psychology, University of Jyvaskyla, Jyvaskyla, Finland
    Int J Psychophysiol 42:279-86. 2001
    ..The results suggest that reading is a sufficiently demanding task to enable the subject to effectively ignore the oddball-deviants but not the alone-deviants...
  8. doi request reprint Dose-related effects of memantine on a mismatch negativity-like response in anesthetized rats
    D Tikhonravov
    Neuroscience Unit, Institute of Biomedicine Physiology, University of Helsinki, Helsinki, Finland
    Neuroscience 167:1175-82. 2010
    ..The high dose of memantine, in contrast, blocked the generation of the auditory MMN-like response. The findings suggest that memantine may, with appropriate doses, facilitate already this early stage of auditory processing...
  9. ncbi request reprint Processing of melodic contours in urethane-anaesthetized rats
    Timo Ruusuvirta
    Cognitive Brain Research Unit, Department of Psychology, PO Box 9, 00014 University of Helsinki, Helsinki, Finland
    Eur J Neurosci 26:701-3. 2007
    ....
  10. doi request reprint Mismatch negativity reflects numbers of tones of specific frequencies in humans
    Timo Ruusuvirta
    Cognitive Brain Research Unit, Department of Psychology, P O Box 13, University of Helsinki, 00014 Helsinki, Finland
    Neurosci Lett 436:138-40. 2008
    ....
  11. doi request reprint Visual mismatch negativity for changes in orientation--a sensory memory-dependent response
    Piia Astikainen
    Department of Psychology, University of Jyvaskyla, PO Box 35, 40014 Jyvaskyla, Finland
    Eur J Neurosci 28:2319-24. 2008
    ..The findings also pave the way for the future exploration of both intact and impaired memory-based visual processing and memory capacity...
  12. doi request reprint Numerical discrimination in newborn infants as revealed by event-related potentials to tone sequences
    Timo Ruusuvirta
    Cognitive Brain Research Unit, Department of Psychology, University of Helsinki, Helsinki, Finland
    Eur J Neurosci 30:1620-4. 2009
    ..The findings suggest very early sensitivity to auditory numerical information in infancy...
  13. ncbi request reprint Preperceptual human number sense for sequential sounds, as revealed by mismatch negativity brain response?
    Timo Ruusuvirta
    Cognitive Brain Research Unit, Department of Psychology, University of Helsinki, Helsinki, Finland
    Cereb Cortex 17:2777-9. 2007
    ..4:0), suggesting some ability of the human brain to operate on the number of sequential sounds of specific frequencies at a preperceptual time scale...
  14. ncbi request reprint Proactive interference in a two-tone pitch-comparison task without additional interfering tones
    Timo Ruusuvirta
    Cognitive Brain Research Unit, Department of Psychology, University of Helsinki, P O Box 13, 00014, Helsinki, Finland
    Psychol Res 72:74-8. 2008
    ..Our study demonstrates proactive interference in a two-tone pitch comparison task as the difficulty to remember when the first tone of the present pair occurred relative to the last tone of the immediately preceding pair...
  15. ncbi request reprint Proactive interference of a sequence of tones in a two-tone pitch comparison task
    T Ruusuvirta
    Department of Psychology, University of Jyvaskyla, Finland
    Psychon Bull Rev 7:327-31. 2000
    ..The results support earlier hypotheses, presented in the context of retroactive interference, by demonstrating proactive interference of a tone sequence at the level of representations of individual tones...
  16. ncbi request reprint Evidence of the origin of specific spontaneous head turns during intertrial intervals
    T Korhonen
    Department of Psychology, University of Jyvaskyla, Finland
    Integr Physiol Behav Sci 32:123-30. 1997
    ....
  17. ncbi request reprint Memory-based detection of rare sound feature combinations in anesthetized rats
    Piia Astikainen
    Department of Psychology, University of Jyvaäskylaä, Jyvaäskylaä, Finland
    Neuroreport 17:1561-4. 2006
    ..The relations of these event-related potentials to mismatch negativity and N1 in humans are addressed...
  18. doi request reprint Effects of an NMDA-receptor antagonist MK-801 on an MMN-like response recorded in anesthetized rats
    Dmitry Tikhonravov
    Neuroscience Unit, Institute of Biomedicine Physiology, University of Helsinki, Finland Helsinki Brain Research Center, Finland
    Brain Res 1203:97-102. 2008
    ..Further, this response was dose-dependently blocked by MK-801. These results suggest that the MMN-like response in rats depends on an intact NMDA-receptor system...
  19. ncbi request reprint Longer storage of auditory than of visual information in the rabbit brain: evidence from dorsal hippocampal electrophysiology
    Piia Astikainen
    Department of Psychology, University of Jyvaskyla, PO Box 35, 40041, Jyvaskyla, Finland
    Exp Brain Res 160:189-93. 2005
    ..Our finding, thus, suggests a similarity in sensory processing abilities between human and non-human mammals...
  20. ncbi request reprint Differences in pitch between tones affect behaviour even when incorrectly identified in direction
    T Ruusuvirta
    Department of Psychology, University of Jyvaskyla, PO Box 35, 40351, Jyvaskyla, Finland
    Neuropsychologia 39:876-9. 2001
    ..The first hypothesis was supported in the sense that stimulus differences might affect behaviour even without their successful attentive processing in normal participants...
  21. ncbi request reprint Auditory cortical event-related potentials to pitch deviances in rats
    T Ruusuvirta
    University of Jyvaskyla, Department of Psychology, Finland
    Neurosci Lett 248:45-8. 1998
    ....
  22. ncbi request reprint The human brain processes visual changes that are not cued by attended auditory stimulation
    Piia Astikainen
    Department of Psychology, University of Jyvaskyla, P O Box 35, 40014 Jyvaskyla, Finland
    Neurosci Lett 368:231-4. 2004
    ..The occipital differential ERPs to deviants, which thus could be found only when standards were present in the series, are discussed in the context of the mismatch negativity (MMN)...
  23. doi request reprint Affective modulation of conditioned eyeblinks
    Suvi Karla
    Department of Psychology, University of Jyvaskyla, P O Box 35, FIN 40014 Jyvaskyla, Finland
    Biol Psychol 82:192-194. 2009
    ..The results add to the motivational priming hypothesis by demonstrating its partial applicability to associatively learned defensive behaviour...
  24. ncbi request reprint Cooling of the cerebellar interpositus nucleus abolishes somatosensory cortical learning-related activity in eyeblink conditioned rabbits
    Jan Wikgren
    Department of Pyschology, University of Jyvaskyla, P O Box 35, 40014 Jyvaskyla, Finland
    Behav Brain Res 170:94-8. 2006
    ..These findings suggest that the efferent copy of the signal related to the eyeblink CR is projected from the cerebellum to the cerebral cortical areas of the US modality...
  25. ncbi request reprint A kind of auditory 'primitive intelligence' already present at birth
    Vanessa Carral
    Cognitive Neuroscience Research Group, Department of Psychiatry and Clinical Psychobiology, University of Barcelona, P Vall d Hebron 171, 08035 Barcelona, Catalonia, Spain
    Eur J Neurosci 21:3201-4. 2005
    ..This finding suggests the early ontogenetic origin of 'primitive intelligence' in audition that eventually may form a prerequisite for later language acquisition...