BRAIN and NERVE－神経研究の進歩65巻8号

2013年08月発行

特集 こころの時間学―現在・過去・未来の起源を求めて

こころの「現在」の科学―時間の錯覚からわかること

著者： 北澤茂¹

所属機関： ¹大阪大学大学院生命機能研究科

ページ範囲：P.911 - P.921

文献概要

Ⅰ．こころの「現在」の幅

　1977年にデビューしたシンガーソングライター，渡辺真知子の「迷い道」の冒頭は，「現在・過去・未来」という印象的なフレーズで始まる。私たちの誰もが，この歌詞に象徴されるように，現在・過去・未来の区別を了解して暮らしている。この私たちが共有する時間の意識を「こころの時間」と呼ぶことにしよう。

　この三者の中で，圧倒的な存在感を示すのが「過去」である。生まれてこの方のおびただしい記憶はいうまでもなく，「シベリアの凍土からマンモスが発見された」と聞けば，自分の生年をはるかにさかのぼって，マンモスが牙を振りかざしていた数万年前にこころは旅する。100億年前のビッグバンですら，繰り返し聞くうちに，身近に感じられるほどである。「未来」は過去に比べれば影が薄いかもしれない。それでも新聞の紙面をにぎわすアベノミクスの効果は2年後に確かめることになっているし，地球温暖化の影響や石油資源の枯渇は数十年の幅で語られる。

参考文献

1) Dennett D, Kinsbourne M: Time and observer: the where and when of consciousness in the brain. Behav Brain Res 15: 183-247, 1992

2) Fujisaki W, Kitazawa S, Nishida S: Multisensory timing. Stein BE (ed): The New Handbook of Multisensory Processes. MIT Press, Cambridge, 2012, pp301-318

3) Kolers PA, von Grunau M: Shape and color in apparent motion. Vision Res 16: 329-335, 1976

4) Geldard FA, Sherrick CE: The cutaneous "rabbit": a perceptual illusion. Science 178: 178-179, 1972

5) Geldard FA: Saltation in somesthesis. Psychol Bull 92: 136-175, 1982

6) Blankenburg F, Ruff CC, Deichmann R, Rees G, Driver J: The cutaneous rabbit illusion affects human primary sensory cortex somatotopically. PLoS Biol 4: e69, 2006

7) Miyazaki M, Hirashima M, Nozaki D: The "cutaneous rabbit" hopping out of the body. J Neurosci 30: 1856-1860, 2010

8) Nijhawan R: Motion extrapolation in catching. Nature 370: 256-257, 1994

9) Baldo MV, Ranvaud RD, Morya E: Flag errors in soccer games: the flash-lag effect brought to real life. Perception 31: 1205-1210, 2002

10) Whitney D, Murakami I: Latency difference, not spatial extrapolation. Nat Neurosci 1: 656-657, 1998

11) Eagleman DM, Sejnowski TJ: Motion integration and postdiction in visual awareness. Science 287: 2036-2038, 2000

12) Sternberg S, Knoll R: The perception of temporal order: fundamental issues and a general model. Kornblum S (ed): Attention and Performance Ⅳ. Academic Press, New York, 1973, pp629-685

13) Hirsh IJ, Sherrick CE Jr: Perceived order in different sense modalities. J Exp Psychol 62: 423-432, 1961

14) Pöppel E: A hierarchical model of temporal perception. Trends Cogn Sci 1: 56-61, 1997

15) Fujisaki W, Nishida S: Audio-tactile superiority over visuo-tactile and audio-visual combinations in the temporal resolution of synchrony perception. Exp Brain Res 198: 245-259, 2009

16) Yamamoto S, Kitazawa S: Reversal of subjective temporal order due to arm crossing. Nat Neurosci 4: 759-765, 2001

17) Shore DI, Spry E, Spence C: Confusing the mind by crossing the hands. Brain Res Cogn Brain Res 14: 153-163, 2002

18) Morrone MC, Ross J, Burr D: Saccadic eye movements cause compression of time as well as space. Nat Neurosci 8: 950-954, 2005

19) Yamamoto S, Kitazawa S: Sensation at the tips of invisible tools. Nat Neurosci 4: 979-980, 2001

20) Moizumi S, Yamamoto S, Kitazawa S: Referral of tactile stimuli to action points in virtual reality with reaction force. Neurosci Res 59: 60-67, 2007

21) Schicke T, Roder B: Spatial remapping of touch: confusion of perceived stimulus order across hand and foot. Proc Natl Acad Sci U S A 103: 11808-11813, 2006

22) Libet B, Wright EW Jr, Feinstein B, Pearl DK: Subjective referral of the timing for a conscious sensory experience: a functional role for the somatosensory specific projection system in man. Brain 102: 193-224, 1979

23) Kitazawa S, Moizumi S, Okuzumi A, Saito F, Shibuya S, et al: Reversal of subjective temporal order due to sensory and motor integrations. Haggard P, Rossetti Y, Kawato M (eds): Sensorimotor Foundations of Higher Cognition (Attention and Performance XXII). Academic Press, New York, 2008, pp73-97

24) Binda P, Morrone MC, Burr DC: Temporal auditory capture does not affect the time course of saccadic mislocalization of visual stimuli. J Vis 10: 7, 1-13, 2010

25) Takahashi T, Kansaku K, Wada M, Shibuya S, Kitazawa S: Neural correlates of tactile temporal-order judgment in humans: an fMRI study. Cereb Cortex 23: 1952-1964, 2013

26) Groh JM, Sparks DL: Saccades to somatosensory targets. I. behavioral characteristics. J Neurophysiol 75: 412-427, 1996

27) Overvliet KE, Azanon E, Soto-Faraco S: Somatosensory saccades reveal the timing of tactile spatial remapping. Neuropsychologia 49: 3046-3052, 2011

28) Azanon E, Soto-Faraco S: Changing reference frames during the encoding of tactile events. Curr Biol 18: 1044-1049, 2008

29) Kitazawa S: Where conscious sensation takes place. Conscious Cogn 11: 475-477, 2002

30) Thiele A, Henning P, Kubischik M, Hoffmann KP: Neural mechanisms of saccadic suppression. Science 295: 2460-3462, 2002

31) Perge JA, Borghuis BG, Bours RJ, Lankheet MJ, van Wezel RJ: Temporal dynamics of direction tuning in motion-sensitive macaque area MT. J Neurophysiol 93: 2104-2116, 2005

32) Girard P, Salin PA, Bullier J: Response selectivity of neurons in area MT of the macaque monkey during reversible inactivation of area V1．J Neurophysiol 67: 1437-1446, 1992

33) Singer W, Gray CM: Visual feature integration and the temporal correlation hypothesis. Annu Rev Neurosci 18: 555-586, 1995

34) Gray CM, Konig P, Engel AK, Singer W: Oscillatory responses in cat visual cortex exhibit inter-columnar synchronization which reflects global stimulus properties. Nature 338: 334-337, 1989

35) Tallon-Baudry C, Bertrand O: Oscillatory gamma activity in humans and its role in object representation. Trends Cogn Sci 3: 151-162, 1999

36) Yuval-Greenberg S, Tomer O, Keren AS, Nelken I, Deouell LY: Transient induced gamma-band response in EEG as a manifestation of miniature saccades. Neuron 58: 429-441, 2008

37) Varela F, Lachaux JP, Rodriguez E, Martinerie J: The brainweb: phase synchronization and large-scale integration. Nat Rev Neurosci 2: 229-239, 2001

38) Kristofferson AB: Successiveness discrimination as a two-state, quantal process. Science 158: 1337-1339, 1967

39) Varela FJ, Toro A, John ER, Schwartz EL: Perceptual framing and cortical alpha rhythm. Neuropsychologia 19: 675-686, 1981

40) Arnold DH, Johnston A: Motion-induced spatial conflict. Nature 425: 181-184, 2003

41) Amano K, Arnold DH, Takeda T, Johnston A: Alpha band amplification during illusory jitter perception. J Vis 8: 3．1-8, 2008

42) Lorincz ML, Kekesi KA, Juhasz G, Crunelli V, Hughes SW: Temporal framing of thalamic relay-mode firing by phasic inhibition during the alpha rhythm. Neuron 63: 683-696, 2009

43) Mathewson KE, Gratton G, Fabiani M, Beck DM, Ro T: To see or not to see: prestimulus alpha phase predicts visual awareness. J Neurosci 29: 2725-2732, 2009

44) Saalmann YB, Pinsk MA, Wang L, Li X, Kastner S: The pulvinar regulates information transmission between cortical areas based on attention demands Science 337: 753-756, 2012

45) Tononi G: Integrated information theory of consciousness: an updated account. Arch Ital Biol 150: 56-90, 2012

46) Tononi G: Consciousness as integrated information: a provisional manifesto. Biol Bull 215: 216-242, 2008

47) Pletzer B, Kerschbaum H, Klimesch W: When frequencies never synchronize: the golden mean and the resting EEG. Brain Res 1335: 91-102, 2010