TY - JOUR
T1 - Upright face-preferential high-gamma responses in lower-order visual areas
T2 - Evidence from intracranial recordings in children
AU - Matsuzaki, Naoyuki
AU - Schwarzlose, Rebecca F.
AU - Nishida, Masaaki
AU - Ofen, Noa
AU - Asano, Eishi
N1 - Funding Information:
This work was supported by NIH grant NS64033 (to E. Asano) as well as the intramural grant from Children's Hospital of Michigan Foundation (to E. Asano). We are grateful to Harry T. Chugani, MD, Sandeep Sood, MD, Csaba Juhász, MD, PhD, Robert Rothermel, PhD, Yutaka Nonoda, MD, Nicole Goellnitz, RN, MSN, CPNP, and Carol Pawlak, REEG/EPT at Children's Hospital of Michigan, Wayne State University for the collaboration and assistance in performing the studies described above.
Publisher Copyright:
© 2015 Elsevier Inc.
PY - 2015/4/1
Y1 - 2015/4/1
N2 - Behavioral studies demonstrate that a face presented in the upright orientation attracts attention more rapidly than an inverted face. Saccades toward an upright face take place in 100-140. ms following presentation. The present study using electrocorticography determined whether upright face-preferential neural activation, as reflected by augmentation of high-gamma activity at 80-150. Hz, involved the lower-order visual cortex within the first 100. ms post-stimulus presentation. Sampled lower-order visual areas were verified by the induction of phosphenes upon electrical stimulation. These areas resided in the lateral-occipital, lingual, and cuneus gyri along the calcarine sulcus, roughly corresponding to V1 and V2. Measurement of high-gamma augmentation during central (circular) and peripheral (annular) checkerboard reversal pattern stimulation indicated that central-field stimuli were processed by the more polar surface whereas peripheral-field stimuli by the more anterior medial surface. Upright face stimuli, compared to inverted ones, elicited up to 23% larger augmentation of high-gamma activity in the lower-order visual regions at 40-90. ms. Upright face-preferential high-gamma augmentation was more highly correlated with high-gamma augmentation for central than peripheral stimuli. Our observations are consistent with the hypothesis that lower-order visual regions, especially those for the central field, are involved in visual cues for rapid detection of upright face stimuli.
AB - Behavioral studies demonstrate that a face presented in the upright orientation attracts attention more rapidly than an inverted face. Saccades toward an upright face take place in 100-140. ms following presentation. The present study using electrocorticography determined whether upright face-preferential neural activation, as reflected by augmentation of high-gamma activity at 80-150. Hz, involved the lower-order visual cortex within the first 100. ms post-stimulus presentation. Sampled lower-order visual areas were verified by the induction of phosphenes upon electrical stimulation. These areas resided in the lateral-occipital, lingual, and cuneus gyri along the calcarine sulcus, roughly corresponding to V1 and V2. Measurement of high-gamma augmentation during central (circular) and peripheral (annular) checkerboard reversal pattern stimulation indicated that central-field stimuli were processed by the more polar surface whereas peripheral-field stimuli by the more anterior medial surface. Upright face stimuli, compared to inverted ones, elicited up to 23% larger augmentation of high-gamma activity in the lower-order visual regions at 40-90. ms. Upright face-preferential high-gamma augmentation was more highly correlated with high-gamma augmentation for central than peripheral stimuli. Our observations are consistent with the hypothesis that lower-order visual regions, especially those for the central field, are involved in visual cues for rapid detection of upright face stimuli.
KW - Category-specific responses
KW - ECoG
KW - High-frequency oscillations (HFOs)
KW - Intracranial recording
KW - Pediatric epilepsy surgery
KW - Ripples
UR - http://www.scopus.com/inward/record.url?scp=84921859129&partnerID=8YFLogxK
U2 - 10.1016/j.neuroimage.2015.01.015
DO - 10.1016/j.neuroimage.2015.01.015
M3 - Article
C2 - 25579446
AN - SCOPUS:84921859129
SN - 1053-8119
VL - 109
SP - 249
EP - 259
JO - NeuroImage
JF - NeuroImage
ER -