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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

Right parietal cluster in response to upright fearful bodies in the 80–110-ms time window.(A) Cortical distribution of the spatiotemporal cluster that responded stronger to upright fearful than upright neutral bodies between 80–110 ms (P = 0.012) on the inflated cortical surface of the right hemisphere (lateral-occipital view), with main sulci indicated on the right (CS = central sulcus; STS = superior temporal sulcus; other abbreviations in text). (B) Signal at the right parietal sensor for each condition (blue: neutral; red: fear; green: scrambled stimuli) showing fear effect at the sensor level at ~90–100 ms. (C) Time course of cluster size in number of significant dipoles included in the cluster. (D) Time courses of average current strength across all cluster dipoles (left vertical axis) with corresponding t-values (right vertical axis) for the fear effect (i.e. black straight line for upright fear > neutral; black dotted line for inverted fear > neutral). There is a strong fear effect (P < 0.001) around 95-ms after stimulus onset, but only for the upright images, not for the inverted images. The dotted black horizontal lines indicate t-levels corresponding to p-values of 0.05, 0.01, and 0.001.
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f2: Right parietal cluster in response to upright fearful bodies in the 80–110-ms time window.(A) Cortical distribution of the spatiotemporal cluster that responded stronger to upright fearful than upright neutral bodies between 80–110 ms (P = 0.012) on the inflated cortical surface of the right hemisphere (lateral-occipital view), with main sulci indicated on the right (CS = central sulcus; STS = superior temporal sulcus; other abbreviations in text). (B) Signal at the right parietal sensor for each condition (blue: neutral; red: fear; green: scrambled stimuli) showing fear effect at the sensor level at ~90–100 ms. (C) Time course of cluster size in number of significant dipoles included in the cluster. (D) Time courses of average current strength across all cluster dipoles (left vertical axis) with corresponding t-values (right vertical axis) for the fear effect (i.e. black straight line for upright fear > neutral; black dotted line for inverted fear > neutral). There is a strong fear effect (P < 0.001) around 95-ms after stimulus onset, but only for the upright images, not for the inverted images. The dotted black horizontal lines indicate t-levels corresponding to p-values of 0.05, 0.01, and 0.001.

Mentions: A significant cluster (P = 0.012) was found for the upright fear > upright neutral contrast in the 80–110-ms time window in the right parietal cortex (Fig. 2). The spatial extent of this cluster included the cortical regions of the (anterior half of the) intraparietal sulcus (IPS), the postcentral sulcus (PoCS), and the inferior parietal lobule (IPL, including angular gyrus (AG) and supramarginal gyrus (SMG)). The parietal area identified by source localisation is consistent with reports from previous fMRI studies of perception of fearful body postures45910.


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)

Right parietal cluster in response to upright fearful bodies in the 80–110-ms time window.(A) Cortical distribution of the spatiotemporal cluster that responded stronger to upright fearful than upright neutral bodies between 80–110 ms (P = 0.012) on the inflated cortical surface of the right hemisphere (lateral-occipital view), with main sulci indicated on the right (CS = central sulcus; STS = superior temporal sulcus; other abbreviations in text). (B) Signal at the right parietal sensor for each condition (blue: neutral; red: fear; green: scrambled stimuli) showing fear effect at the sensor level at ~90–100 ms. (C) Time course of cluster size in number of significant dipoles included in the cluster. (D) Time courses of average current strength across all cluster dipoles (left vertical axis) with corresponding t-values (right vertical axis) for the fear effect (i.e. black straight line for upright fear > neutral; black dotted line for inverted fear > neutral). There is a strong fear effect (P < 0.001) around 95-ms after stimulus onset, but only for the upright images, not for the inverted images. The dotted black horizontal lines indicate t-levels corresponding to p-values of 0.05, 0.01, and 0.001.
© Copyright Policy - open-access
Related In: Results  -  Collection

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

f2: Right parietal cluster in response to upright fearful bodies in the 80–110-ms time window.(A) Cortical distribution of the spatiotemporal cluster that responded stronger to upright fearful than upright neutral bodies between 80–110 ms (P = 0.012) on the inflated cortical surface of the right hemisphere (lateral-occipital view), with main sulci indicated on the right (CS = central sulcus; STS = superior temporal sulcus; other abbreviations in text). (B) Signal at the right parietal sensor for each condition (blue: neutral; red: fear; green: scrambled stimuli) showing fear effect at the sensor level at ~90–100 ms. (C) Time course of cluster size in number of significant dipoles included in the cluster. (D) Time courses of average current strength across all cluster dipoles (left vertical axis) with corresponding t-values (right vertical axis) for the fear effect (i.e. black straight line for upright fear > neutral; black dotted line for inverted fear > neutral). There is a strong fear effect (P < 0.001) around 95-ms after stimulus onset, but only for the upright images, not for the inverted images. The dotted black horizontal lines indicate t-levels corresponding to p-values of 0.05, 0.01, and 0.001.
Mentions: A significant cluster (P = 0.012) was found for the upright fear > upright neutral contrast in the 80–110-ms time window in the right parietal cortex (Fig. 2). The spatial extent of this cluster included the cortical regions of the (anterior half of the) intraparietal sulcus (IPS), the postcentral sulcus (PoCS), and the inferior parietal lobule (IPL, including angular gyrus (AG) and supramarginal gyrus (SMG)). The parietal area identified by source localisation is consistent with reports from previous fMRI studies of perception of fearful body postures45910.

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