2017-10-11
High spatial frequencies drive the early posterior negativity in response to snake pictures
Publication
Publication
Psychophysiology: an international journal , Volume 54 p. S47
Introduction
As snakes were probably the first predators of
mammals, they may have been important agents of
evolutionary changes in the primate visual system
allowing fast visual detection of fearful stimuli (Isbell,
2006). Many EEG studies have established larger
early posterior negativity (EPN) in response to
snake stimuli when compared to other animal stimuli
(e.g., Van Strien et al., 2014). The EPN is an eventrelated
potential that reflects early selective visual
processing of emotionally significant information. A
recent study (Van Strien & Isbell, 2017) has
emphasized the importance of the typical scales and
scale patterns of the snake skin for the enhanced
EPN in response to snake pictures. In the present
research, we examined whether the EPN snake
effect still exists when these scales are made less
visible by blurring snake pictures, that is, we
examined the influence of spatial frequency on the
EPN snake effect.
Additional Metadata | |
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hdl.handle.net/1765/107278 | |
Psychophysiology: an international journal | |
Organisation | Department of Psychology, Education, and Child Studies |
van Strien, J., & Beligiannis, N. (2017). High spatial frequencies drive the early posterior negativity in response to snake pictures. Psychophysiology: an international journal, 54. Retrieved from http://hdl.handle.net/1765/107278 |