Abstract:
:Sixteen right-handed participants (eight male and eight female students) were administered a tachistoscopic unilateral letter-naming task. The design contained three valance conditions and two types of presentation. In baseline conditions no concurrent task was given. In threat and nonthreat conditions, each unilateral stimulus was preceded by a threatening or nonthreatening word in central vision. Participants were instructed to recall this word after reporting the unilateral letter string. With blocked presentations, a series of trials had the same emotional valence (threatening or nonthreatening), whereas with mixed presentations the valences were alternating within a series. Analysis of order effects for the blocked presentations revealed sustained effects of the initial block valence on visual field asymmetries. The sustained effect of the initial threatening block was a reduction of the right visual-field advantage. Mixed presentations resulted in a enhanced right visual-field advantage following the presentation of threatening information and an enhanced left visual-field advantage following the presentation of nonthreatening information. The research suggests that tonic and phasic reactions to emotional stimuli may affect visual field asymmetry in different ways.
journal_name
Neuropsychologiajournal_title
Neuropsychologiaauthors
Van Strien JW,Luipen MWdoi
10.1016/s0028-3932(98)00112-2subject
Has Abstractpub_date
1999-05-01 00:00:00pages
617-21issue
5eissn
0028-3932issn
1873-3514pii
S0028393298001122journal_volume
37pub_type
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