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Early Preferential Responses to Fear Stimuli in Human Right Dorsal Visual Stream--A Meg Study.

Meeren HK, Hadjikhani N, Ahlfors SP, Hämäläinen MS, de Gelder B - Sci Rep (2016)

Bottom Line: Emotional expressions of others are salient biological stimuli that automatically capture attention and prepare us for action.We investigated the early cortical dynamics of automatic visual discrimination of fearful body expressions by monitoring cortical activity using magnetoencephalography.We show that right parietal cortex distinguishes between fearful and neutral bodies as early as 80-ms after stimulus onset, providing the first evidence for a fast emotion-attention-action link through human dorsal visual stream.

View Article: PubMed Central - PubMed

Affiliation: Cognitive and Affective Neuroscience Laboratory, Tilburg University, Tilburg, The Netherlands.

ABSTRACT
Emotional expressions of others are salient biological stimuli that automatically capture attention and prepare us for action. We investigated the early cortical dynamics of automatic visual discrimination of fearful body expressions by monitoring cortical activity using magnetoencephalography. We show that right parietal cortex distinguishes between fearful and neutral bodies as early as 80-ms after stimulus onset, providing the first evidence for a fast emotion-attention-action link through human dorsal visual stream.

No MeSH data available.


Related in: MedlinePlus

Mean global field power (MGFP) of the MEG signal evoked by photographs of upright neutral (blue) and fearful bodies (red).There is an increased response to fearful bodies around 100-ms after stimulus onset. Shown are the grand averages and corresponding t-values (black line, right vertical axis) for the contrast Upright Fear > Upright Neutral. The dotted black horizontal lines indicate t-levels corresponding to p-values of 0.05 and 0.01.
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f1: Mean global field power (MGFP) of the MEG signal evoked by photographs of upright neutral (blue) and fearful bodies (red).There is an increased response to fearful bodies around 100-ms after stimulus onset. Shown are the grand averages and corresponding t-values (black line, right vertical axis) for the contrast Upright Fear > Upright Neutral. The dotted black horizontal lines indicate t-levels corresponding to p-values of 0.05 and 0.01.

Mentions: The overall signal strength of the ERFs at the sensor level - mean global field power measured at the planar gradiometers - was significantly larger for upright fearful as compared to upright neutral bodies (one-tailed paired t-test, P = 0.01) around 100-ms after stimulus onset (Fig. 1), hereby confirming the early fear sensitivity found in event-related potential (ERP) studies6.


Early Preferential Responses to Fear Stimuli in Human Right Dorsal Visual Stream--A Meg Study.

Meeren HK, Hadjikhani N, Ahlfors SP, Hämäläinen MS, de Gelder B - Sci Rep (2016)

Mean global field power (MGFP) of the MEG signal evoked by photographs of upright neutral (blue) and fearful bodies (red).There is an increased response to fearful bodies around 100-ms after stimulus onset. Shown are the grand averages and corresponding t-values (black line, right vertical axis) for the contrast Upright Fear > Upright Neutral. The dotted black horizontal lines indicate t-levels corresponding to p-values of 0.05 and 0.01.
© Copyright Policy - open-access
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC4837410&req=5

f1: Mean global field power (MGFP) of the MEG signal evoked by photographs of upright neutral (blue) and fearful bodies (red).There is an increased response to fearful bodies around 100-ms after stimulus onset. Shown are the grand averages and corresponding t-values (black line, right vertical axis) for the contrast Upright Fear > Upright Neutral. The dotted black horizontal lines indicate t-levels corresponding to p-values of 0.05 and 0.01.
Mentions: The overall signal strength of the ERFs at the sensor level - mean global field power measured at the planar gradiometers - was significantly larger for upright fearful as compared to upright neutral bodies (one-tailed paired t-test, P = 0.01) around 100-ms after stimulus onset (Fig. 1), hereby confirming the early fear sensitivity found in event-related potential (ERP) studies6.

Bottom Line: Emotional expressions of others are salient biological stimuli that automatically capture attention and prepare us for action.We investigated the early cortical dynamics of automatic visual discrimination of fearful body expressions by monitoring cortical activity using magnetoencephalography.We show that right parietal cortex distinguishes between fearful and neutral bodies as early as 80-ms after stimulus onset, providing the first evidence for a fast emotion-attention-action link through human dorsal visual stream.

View Article: PubMed Central - PubMed

Affiliation: Cognitive and Affective Neuroscience Laboratory, Tilburg University, Tilburg, The Netherlands.

ABSTRACT
Emotional expressions of others are salient biological stimuli that automatically capture attention and prepare us for action. We investigated the early cortical dynamics of automatic visual discrimination of fearful body expressions by monitoring cortical activity using magnetoencephalography. We show that right parietal cortex distinguishes between fearful and neutral bodies as early as 80-ms after stimulus onset, providing the first evidence for a fast emotion-attention-action link through human dorsal visual stream.

No MeSH data available.


Related in: MedlinePlus