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Eyeblink entrainment at breakpoints of speech


The eyes play an essential role in social communication. Eyeblinks, however, have thus far received minor attention. We previously showed that subjects blink in synchrony while viewing the same video stories (Nakano et al. in Proc R Soc B 276:3635–3644, 2009). We therefore hypothesized that eyeblinks are synchronized between listener and speaker in face-to-face conversation. Here, we show that listeners blinked with a delay of 0.25–0.5 s after the speaker blinked when the listeners viewed close-up video clips (with sound) of the speaker’s face. Furthermore, this entrainment was selectively triggered by speaker’s eyeblinks occurring at the end and during pauses in speech. Eyeblink entrainment was not observed when viewing identical video clips without sound, indicating that blink entrainment was not an automatic imitation. We therefore suggest that eyeblink entrainment reflects smooth communication between interactants.

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  • Chartrand TL, Bargh JA (1999) The chameleon effect: the perception-behavior link and social interaction. J Pers Soc Psychol 76:893–910

    CAS  Article  PubMed  Google Scholar 

  • Condon WS, Ogston WD (1966) Sound film analysis of normal and pathological behavior patterns. J Nerv Ment Dis 143:338–347

    CAS  Article  PubMed  Google Scholar 

  • Condon WS, Sander LW (1974a) Neonate movement is synchronized with adult speech: interactional participation and language acquisition. Science 183:99–101

    CAS  Article  PubMed  Google Scholar 

  • Condon WS, Sander LW (1974b) Synchrony demonstrated between movements of the neonate and adult speech. Child Dev 45:456–462

    CAS  Article  PubMed  Google Scholar 

  • Dittmann AT, Llewellyn LG (1968) Relationship between vocalizations and head nods as listener responses. J Pers Soc Psychol 9:79–84

    CAS  Article  PubMed  Google Scholar 

  • Drew G (1951) Variations in reflex blink-rate during visual-motor tasks. Q J Exp Psychol 3:73–88

    Article  Google Scholar 

  • Ekman P (2003) Emotions revealed: recognizing faces and feelings to improve communication and emotional life. Times books

  • Emery NJ (2000) The eyes have it: the neuroethology, function and evolution of social gaze. Neurosci Biobehav Rev 24:581–604

    CAS  Article  PubMed  Google Scholar 

  • Fukuda K (1994) Analysis of eyeblink activity during discriminative tasks. Percept Mot Skills 79:1599–1608

    CAS  PubMed  Google Scholar 

  • Hall A (1945) The origin and purposes of blinking. Bri J Opthalmol 29:445–467

    CAS  Article  Google Scholar 

  • Karson CN (1983) Spontaneous eye-blink rates and dopaminergic systems. Brain 106(Pt 3):643–653

    Article  PubMed  Google Scholar 

  • McFarland DH (2001) Respiratory markers of conversational interaction. J Speech Lang Hear Res 44:128–143

    CAS  Article  PubMed  Google Scholar 

  • Nakano T, Yamamoto Y, Kitajo K, Takahashi T, Kitazawa S (2009) Synchronization of spontaneous eyeblinks while viewing video stories. Proc Biol Sci 276:3635–3644

    Article  PubMed  Google Scholar 

  • Ponder E, Kennedy WP (1927) On the act of blinking. Q J Exp Physiol 18:89–110

    Google Scholar 

  • Shockley K, Santana MV, Fowler CA (2003) Mutual interpersonal postural constraints are involved in cooperative conversation. J Exp Psychol Hum Percept Perform 29:326–332

    Article  PubMed  Google Scholar 

  • Stern JA, Walrath LC, Goldstein R (1984) The endogenous eyeblink. Psychophysiology 21:22–33

    CAS  Article  PubMed  Google Scholar 

  • Theiler J, Eubank S, Longtin A, Galdrikian B, Farmer D (1992) Testing for nonlinearity in time series: the method of surrogate data. Physica D 58:77–94

    Article  Google Scholar 

  • Tomasello M, Farrar MJ (1986) Joint attention and early language. Child Dev 57:1454–1463

    CAS  Article  PubMed  Google Scholar 

  • Toyama K, Kimura M, Tanaka K (1981) Cross-correlation analysis of interneuronal connectivity in cat visual cortex. J Neurophysiol 46:191–201

    CAS  PubMed  Google Scholar 

  • VanderWerf F, Brassinga P, Reits D, Aramideh M, Ongerboer de Visser B (2003) Eyelid movements: behavioral studies of blinking in humans under different stimulus conditions. J Neurophysiol 89:2784–2796

    Article  PubMed  Google Scholar 

  • Yuze H, Tada H (1994) A computerized identification and date analysis of eyeblink EOG waves. Jap. J. Ergonom 30:331–337

    Google Scholar 

  • Zellner B (1994) Pauses and the temporal structure of speech. In: Keller E (ed) Fundamentals of speech synthesis and speech recognition. John Wiley, Chichester, pp 41–62

    Google Scholar 

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Correspondence to Tamami Nakano.

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Nakano, T., Kitazawa, S. Eyeblink entrainment at breakpoints of speech. Exp Brain Res 205, 577–581 (2010).

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  • Eyeblink
  • Speech
  • Entrainment
  • Synchronization
  • Communication
  • Interactional synchrony