title: Asynchronous presentation of global and local information reveals effects of attention on brain electrical activity specific to each level.
abstract: The neural basis of selective attention within hierarchically organized Navon figures has been extensively studied with event related potentials (ERPs), by contrasting responses obtained when attending the global and the local echelons. The findings are inherently ambiguous because both levels are always presented together. Thus, only a mixture of the brain responses to two levels can be observed. Here, we use a method that allows unveiling of global and local letters at distinct times, enabling estimation of separate ERPs related to each level. Two interspersed oddball streams were presented, each using letters from one level and comprised of frequent distracters and rare targets. Previous work and our Experiment 1 show that it is difficult to divide attention between two such streams of stimuli. ERP recording in Experiment 2 evinced an early selection negativity (SN, with latencies to the 50% area of about 266 ms for global distracters and 276 ms for local distracters) that was larger for attended relative to unattended distracters. The SN was larger over right posterior occipito-temporal derivations for global stimuli and over left posterior occipito-temporal derivations for local stimuli (although the latter was less strongly lateralized). A discrimination negativity (DN, accompanied by a P3b) was larger for attended targets relative to attended distracters, with latencies to the 50% area of about 316 ms for global stimuli and 301 ms for local stimuli, which presented a similar distribution for both levels over left temporo-parietal electrodes. The two negativities apparently index successive stages in the processing of a selected level within a compound figure. By resolving the ambiguity of traditional designs, our method allowed us to observe the effects of attention for each hierarchical level on its own.
authors: Cognitive Neurosciences, Cuban Center for Neuroscience Havana, Cuba.
authors: Jorge
authors: J
authors: Iglesias-Fuster
authors: Cognitive Neurosciences, Cuban Center for Neuroscience Havana, Cuba.
authors: Yusniel
authors: Y
authors: Santos-Rodríguez
authors: Neuroinformatics, Cuban Center for Neuroscience Havana, Cuba.
authors: Nelson
authors: N
authors: Trujillo-Barreto
authors: Cognitive Neurosciences, Cuban Center for Neuroscience Havana, Cuba.
authors: Mitchell J
authors: MJ
authors: Valdés-Sosa
keywords: ERP; attention; compound figure; global; local
references: Perception. 1987;16(1):89-101
references: 3671045
references: Science. 1973 Oct 12;182(4108):177-80
references: 4730062
references: Neuropsychologia. 2004;42(13):1805-13
references: 15351629
references: Electroencephalogr Clin Neurophysiol. 1977 Apr;42(4):528-35
references: 66136
references: J Neural Eng. 2014 Aug;11(4):046016
references: 24963952
references: Proc Natl Acad Sci U S A. 1998 Feb 3;95(3):781-7
references: 9448241
references: Front Integr Neurosci. 2014 Dec 16;8:91
references: 25565994
references: Hum Brain Mapp. 1998;6(4):216-38
references: 9704262
references: Psychophysiology. 1981 Sep;18(5):493-513
references: 7280146
references: Vision Res. 2002 Jun;42(12):1513-21
references: 12074946
references: Psychophysiology. 1993 Jan;30(1):98-119
references: 8416067
references: J Neurosci. 2004 Feb 25;24(8):1822-32
references: 14985422
references: Percept Psychophys. 1984 Aug;36(2):185-98
references: 6514528
references: Electroencephalogr Clin Neurophysiol. 1978 Nov;45(5):628-40
references: 81765
references: Front Psychol. 2014 Apr 09;5:277
references: 24782792
references: Electroencephalogr Clin Neurophysiol. 1976 Jan;40(1):33-42
references: 55346
references: Int J Neurosci. 1994 Dec;79(3-4):221-33
references: 7744564
references: Clin Neurophysiol. 2002 Nov;113(11):1840-54
references: 12417240
references: Clin Neurophysiol. 2007 Oct;118(10):2128-48
references: 17573239
references: J Exp Psychol Gen. 1996 Sep;125(3):227-49
references: 8751819
references: Neuropsychologia. 1998 Mar;36(3):189-200
references: 9622184
references: Science. 1971 Jul 23;173(3994):351-3
references: 5559908
references: Brain Topogr. 1999 Spring;11(3):171-83
references: 10217441
references: J Neurophysiol. 1997 Jan;77(1):24-42
references: 9120566
references: J Cogn Neurosci. 2006 Apr;18(4):539-61
references: 16768359
references: Percept Psychophys. 1983 Feb;33(2):113-20
references: 6844102
references: Neuroimage. 2007 Jan 1;34(1):127-36
references: 17070706
references: Neuropsychologia. 1993 Aug;31(8):841-52
references: 8413904
references: J Cogn Neurosci. 2006 Feb;18(2):298-310
references: 16494688
references: J Exp Psychol Hum Percept Perform. 1995 Jun;21(3):451-68
references: 7790827
references: J Neurosci Methods. 2007 Aug 15;164(1):177-90
references: 17517438
references: Curr Biol. 2008 Jul 8;18(13):1006-9
references: 18595707
references: Electroencephalogr Clin Neurophysiol. 1983 Oct;56(4):272-82
references: 6193940
references: J Exp Psychol Hum Percept Perform. 1981 Dec;7(6):1161-74
references: 6458645
references: Psychophysiology. 2015 Feb;52(2):157-68
references: 25141770
references: Psychophysiology. 1987 Jul;24(4):449-63
references: 3615757
references: J Physiol. 1977 Oct;271(3):761-82
references: 926022
references: Clin Neurophysiol. 2005 Jun;116(6):1444-54
references: 15978507
references: Psychophysiology. 2008 Jan;45(1):152-70
references: 17850238
references: Electroencephalogr Clin Neurophysiol. 1980 Sep;49(5-6):461-75
references: 6158428
references: Electroencephalogr Clin Neurophysiol. 1985 May;62(3):203-8
references: 2581760
references: Percept Psychophys. 1994 Aug;56(2):183-97
references: 7971119
references: J Vis. 2011 Jun 13;11(7):null
references: 21670096
references: Psychol Sci. 2010 Mar;21(3):424-31
references: 20424080
references: J Cogn Neurosci. 1998 Jan;10(1):137-51
references: 9526088
references: Percept Psychophys. 1996 Feb;58(2):191-206
references: 8838164
references: Percept Psychophys. 1982 Apr;31(4):358-66
references: 7110889
references: Brain Topogr. 1997 Winter;10(2):133-43
references: 9455604
references: Front Psychol. 2014 Feb 03;5:61
references: 24550875
references: Electroencephalogr Clin Neurophysiol. 1997 Mar;102(3):240-7
references: 9129579
references: Nature. 1994 May 26;369(6478):313-5
references: 8183369
references: J Exp Psychol Hum Percept Perform. 1983 Dec;9(6):955-65
references: 6227704
references: Science. 1971 Jun 25;172(3990):1357-60
references: 5580218
references: Clin Neurophysiol. 2001 Nov;112(11):1980-98
references: 11682336
references: Percept Psychophys. 1984 Apr;35(4):361-71
references: 6739271
references: Hum Brain Mapp. 2014 Jul;35(7):3008-24
references: 25050422
references: Electroencephalogr Clin Neurophysiol. 1975 Feb;38(2):131-8
references: 45943
references: Front Psychol. 2011 Jun 20;2:134
references: 21734900
references: Biol Psychol. 2001 May;56(2):113-30
references: 11334699
references: Neuroimage. 1995 Sep;2(3):173-81
references: 9343600
references: J Cogn Neurosci. 2005 Jul;17(7):1098-114
references: 16102239
references: J Exp Psychol Hum Percept Perform. 2005 Jun;31(3):520-41
references: 15982129
references: Psychophysiology. 2013 Jan;50(1):15-22
references: 23094650
references: Electroencephalogr Clin Neurophysiol. 1995 Oct;95(4):277-92
references: 8529559
references: J Cogn Neurosci. 1997 Fall;9(5):687-98
references: 23965124
references: Perception. 1986;15(3):259-73
references: 3797200
references: Int J Psychophysiol. 2003 Mar;47(3):255-69
references: 12663069
references: J Cogn Neurosci. 1996 Sep;8(5):387-402
references: 23961943
references: Psychol Res. 1993;56(1):14-25
references: 8310101
references: Neurosci Lett. 2007 May 29;419(2):131-6
references: 17490815