A highly significant exemplar tuning within the category of faces was observed in high-Gamma (80-150 Hz) responses.
Target faces were either one specific face (exemplar search) or a given category of faces (category search).
The same phenomenon has been described in the context of visual search for faces: looking for a specific face (e.g. looking for Bob) is associated with a larger N2pc than looking for a category of faces (e.g. looking for any male face), regardless of face species23.
For instance, to distinguish the category of faces from another class, it can be more informative to use face fragments, such as the nose, lips, or an eye rather than to use the image of the whole face.
Stimuli were presented in blocks of 16 images, all chosen randomly from the category of face stimuli or, alternatively, the various categories of non-face stimuli.
This early visual preference for familiar categories of faces in the visual environment may be the starting point for the development of the ORE. Kelly et al. [1] assessed Caucasian 3-, 6-, and 9-month-olds' abilities to discriminate own-race faces and other-race African, Middle Eastern, and Chinese faces.
For group data, no consistent pattern was observed in the graphs between location measures (e.g., mean, median, mode, minimum, maximum) of positive (approach) and negative (avoidance) keypressing across the four categories of faces (i.e., BF, AF, BM, AM faces).
In the second fMRI study, subjects viewed static pictures of 4 categories of faces (human female, human male, monkeys, and dogs) and 3 categories of objects (houses, chairs, and shoes).
In the experiment, each of the participants was randomly exposed to eight combinations of two types of image presentations (photo image vs. avatar image) and four categories of human faces (self-faces vs. famous faces vs. ideal faces vs. unfamiliar faces).
We show that neural activity in all patches contains information that discriminates between the broad categories of face and nonface objects, individual faces, and nonface stimuli.
Nurses used the Behavioral Pain Assessment Scale (Campbell, Detroit Medical Center 2000), assigning scores of 0 2 in the categories of Face, Restlessness, Muscle Tone, Vocalization, and Consolability (0/10 = no pain, 10/10 = maximum pain).
