geoscience.net logo
+ Resolve Article
+ Follow Us
Follow on FacebookFollow on Facebook
Follow on TwitterFollow on Twitter

+ Translate
+ Subscribe to Site Feed
GeoScience Most Shared ContentMost Shared Content

Unseen fearful faces influence face encoding: evidence from ERPs in hemianopic patients


, : Unseen fearful faces influence face encoding: evidence from ERPs in hemianopic patients. Journal of Cognitive Neuroscience 26(11): 2564-2577

Visual threat-related signals are not only processed via a cortical geniculo-striatal pathway to the amygdala but also via a subcortical colliculo-pulvinar-amygdala pathway, which presumably mediates implicit processing of fearful stimuli. Indeed, hemianopic patients with unilateral damage to the geniculo-striatal pathway have been shown to respond faster to seen happy faces in their intact visual field when unseen fearful faces were concurrently presented in their blind field [Bertini, C., Cecere, R., & Làdavas, E. I am blind, but I "see" fear. Cortex, 49, 985-993, 2013]. This behavioral facilitation in the presence of unseen fear might reflect enhanced processing of consciously perceived faces because of early activation of the subcortical pathway for implicit fear perception, which possibly leads to a modulation of cortical activity. To test this hypothesis, we examined ERPs elicited by fearful and happy faces presented to the intact visual field of right and left hemianopic patients, whereas fearful, happy, or neutral faces were concurrently presented in their blind field. Results showed that the amplitude of the N170 elicited by seen happy faces was selectively increased when an unseen fearful face was concurrently presented in the blind field of right hemianopic patients. These results suggest that when the geniculo-striate visual pathway is lesioned, the rapid and implicit processing of threat signals can enhance facial encoding. Notably, the N170 modulation was only observed in left-lesioned patients, favoring the hypothesis that implicit subcortical processing of fearful signals can influence face encoding only when the right hemisphere is intact.

US$19.90

PMID: 24893734

DOI: 10.1162/jocn_a_00671


Other references

van der Merwe, P.J.; Toerien, S.; Burger, W.P., 1999: Pharmacokinetics of clenbuterol in the ostrich. The aim of this study was to investigate the pharmacokinetics of clenbuterol in the ostrich as no such data is available. Clenbuterol (2 mg) was given as a single oral dose to nine ostriches. Blood samples were collected over a period of 96 h afte...

Scannon, P.J.; Wedel, N., 1999: Therapeutic uses of BPI protein products in humans with hemorrhage due to trauma. Official Gazette of the United States Patent & Trademark Office Patents 1225(5), Aug 31

Zaĭtsev, A.V., 1987: Organization of the work of an infertility clinic. Laboratornoe Delo: 65-66

Mauritz, F.A.; Rinsma, N.F.; van Heurn, E.L.W.; Sloots, C.E.J.; Siersema, P.D.; Houwen, R.H.J.; van der Zee, D.C.; Masclee, A.A.M.; Conchillo, Jé.M.; Van Herwaarden-Lindeboom, M.Y.A., 2016: Esophageal mucosal integrity improves after laparoscopic antireflux surgery in children with gastroesophageal reflux disease. Esophageal intraluminal baseline impedance reflects the conductivity of the esophageal mucosa and may be an instrument for in vivo evaluation of mucosal integrity in children with gastroesophageal reflux disease (GERD). Laparoscopic antireflux sur...

Wright, R.L.; Lynes, P.G., 1964: Value Of Continuous Drug Administration For Chronic Long-Term Mental Hospital Patients. Canadian Psychiatric Association Journal 9: 352-357

Cheng, C.C.; Chen, Y.C.; Kurman, R.J.; Shih, I.M., 2003: Overexpression of a novel gene, p68, in ovarian serous carcinoma. Modern Pathology 16(1): 186A, January

McLane, M.A.; Hall, L.C., 1972: DDE thins screech owl eggshells. Bulletin of Environmental Contamination and Toxicology 8(2): 65-68

Kitchell, J.F.; Carpenter, S.R., 1993: Synthesis and new directions. Unknown

Iwata, K., 1942: Comparative studies on the habits of solitary wasps. Tenthredo Kyoto, 4: 1-146

Aleksandrova, I.V., 1953: Processes of humus formation in primitive soils.. The first stage of soil formation on massive crystalline rocks is carried out by a complex of micro-organisms including algae, nitrifiers, N fixers and ammonifiers which assist in both the synthesis and mineralization of" primitive soil humus...