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Electric brain potentials evoked by pictures of faces and non-faces: a search for ?face-specific? EEG-potentials

Overview of attention for article published in Experimental Brain Research, September 1989
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Title
Electric brain potentials evoked by pictures of faces and non-faces: a search for ?face-specific? EEG-potentials
Published in
Experimental Brain Research, September 1989
DOI 10.1007/bf00274992
Pubmed ID
Authors

K. B�tzel, O. -J. Gr�sser

Abstract

In three different experimental series, electroencephalographic responses evoked by changes in pictorial patterns were recorded in 29 adult human subjects (19 females, 10 males). Quantitative data evaluation for the evoked responses from electrodes T5, T6, Cz, Pz (10-20 system) was performed. The stimuli were projected to a 4 x 6 degree binocularly viewed field. The patterns changed within 6 ms every 2.5-4.5 s according to a random program. Paradigm (1): Identical line drawings of a face, a tree and a chair were used, either black on white (P-stimuli) or white on black (N-stimuli); in each set altogether 160 slides appeared in semi-random order. At Cz and Pz a prototypical EEG-response evoked by face stimuli was found exhibiting 3 prominent peaks, very similar for P-stimuli and N-stimuli. A P150 maximum was especially pronounced in the responses to face stimuli but absent in the evoked potentials aroused by chair or tree stimuli. The difference curves (face-chair, face-tree, chair-tree) supported the hypothesis of "face-responsive" components in these responses. Paradigm (2): 4 x 6 degree slides (black and white photographs) of 54 different human faces, 53 different vases and 53 different pairs of shoes were projected as in paradigm (1), but instruction to the subjects on a supposed post-test memory task raised their attention during the recordings. "Face-responsive" components (an early N 140-160, P 210-240, N 300) were more marked in female than in male subjects, and again most pronounced at electrode Cz. Paradigm (3): When a recognition task was included in paradigm (2)--9 out of 192 items were memorized 20 minutes before the recording session--essentially the same evoked potentials were obtained as in (2), but an additional late positive wave (450-600 ms) appeared in the responses to all stimuli. We assume that the "face-specific" components--a designation which is used cautiously considering the limited number of non-face stimuli--do not originate in the temporo-occipital cortical face region, but in limbic structures (amygdala, hippocampus) deep in the temporal lobe or in the gyrus cinguli. In the present study no significant hemispheric differences (T5, T6) in the evoked responses were found (all stimulus categories), but such differences are known to appear with highly schematic face stimuli.

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Mendeley readers

The data shown below were compiled from readership statistics for 91 Mendeley readers of this research output. Click here to see the associated Mendeley record.

Geographical breakdown

Country Count As %
Portugal 2 2%
Germany 1 1%
Norway 1 1%
Uruguay 1 1%
Finland 1 1%
United Kingdom 1 1%
New Zealand 1 1%
Unknown 83 91%

Demographic breakdown

Readers by professional status Count As %
Student > Ph. D. Student 20 22%
Student > Master 16 18%
Researcher 13 14%
Student > Bachelor 9 10%
Professor > Associate Professor 9 10%
Other 14 15%
Unknown 10 11%
Readers by discipline Count As %
Psychology 38 42%
Neuroscience 17 19%
Agricultural and Biological Sciences 6 7%
Medicine and Dentistry 4 4%
Engineering 3 3%
Other 4 4%
Unknown 19 21%
Attention Score in Context

Attention Score in Context

This research output has an Altmetric Attention Score of 3. This is our high-level measure of the quality and quantity of online attention that it has received. This Attention Score, as well as the ranking and number of research outputs shown below, was calculated when the research output was last mentioned on 08 December 2018.
All research outputs
#7,486,330
of 22,883,326 outputs
Outputs from Experimental Brain Research
#904
of 3,234 outputs
Outputs of similar age
#4,070
of 14,181 outputs
Outputs of similar age from Experimental Brain Research
#3
of 4 outputs
Altmetric has tracked 22,883,326 research outputs across all sources so far. This one is in the 44th percentile – i.e., 44% of other outputs scored the same or lower than it.
So far Altmetric has tracked 3,234 research outputs from this source. They typically receive a little more attention than average, with a mean Attention Score of 5.0. This one has gotten more attention than average, scoring higher than 55% of its peers.
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