***TASK*** the task is to summarize an input biomedical literature in six sentences 
    ***INPUT*** the input is a biomedical literature 
    ***OUTPUT*** the output is the summary of an input biomedical literature in six sentences 
    ***DOCUMENTATION*** 
    ***EXAMPLES*** 
    Input: Processing of emotion information by maltreated and control children was assessed with  event-related brain potentials ( ERPs ) .  Maltreated children , for whom negative facial displays may be especially salient , and demographically comparable peers were tested to increase knowledge of differential processing of emotion information .  ERPs  were measured while children responded to pictures depicting facial displays of anger , fear , and happiness . Maltreated children showed larger P3b amplitude when angry faces appeared as targets than did control children ; the two groups did not differ when targets were either happy or fearful facial expressions or for nontargets of any emotional content . These results indicate that aberrant emotional experiences associated with maltreatment may alter the allocation of attention and sensitivity that children develop to process specific emotion information In an investigation of the N400 component , event-related potentials ( ERPs ) elicited by 4 types of word stimuli ( real words , pseudowords , r and om letter strings , and false fonts ) and 3 types of picture stimuli ( real pictures , pseudopictures , and picture parts ) presented in separate lists were recorded from 10- and 11-year-old children . All types of word stimuli elicited an anteriorly distributed negativity peaking at about 400 msec ( antN400 ) . Words and pseudowords elicited similar ERPs , whereas ERPs to letter strings differed from those to both pseudowords and false fonts . All types of picture stimuli elicited dual anterior negativities ( N350 and N430 ) . Real pictures and pseudopictures elicited similar ERPs , whereas pseudopictures and picture parts elicited asymmetrical processing . The results are discussed in terms of increased sensitivity to and dependence on context in children An intervention facilitated 3-month-old infants ' apprehension of objects either prior to ( reach first ) , or after ( watch first ) viewing another person grasp similar objects in a visual habituation procedure . Action experience facilitated action perception : reach-first infants focused on the relation between the actor and her goal , but watch-first infants did not . Infants ' sensitivity to the actor 's goal was correlated with their engagement in object-directed contact with the toys . These findings indicate that infants can rapidly form goal -based action representations and suggest a developmental link between infants ' goal directed actions and their ability to detect goals in the actions of others The present study sought to compare adult and infant  ERP responses in analogous tests of visual recognition memory . Adults were tested under two test conditions , in which they were given either explicit instructions to respond to a previously-seen stimulus , or no instructions . Testing in both conditions took place after either a 1- or 5-min delay between familiarization and test . Eight-month-old infants were tested under the same ' passive ' ( no instruction ) conditions as adults .  ERP morphology differed across age groups . Adults evinced a P300 that was larger under ' active ' as compared to ' passive ' test conditions , and a late positive slow wave response that was greater to novel than familiar stimuli . There was no evidence in infants of a P300 , although infants did demonstrate a late positive slow wave that was greater to familiar than to novel stimuli . Parallels between the infant and adult findings are discussed and in particular , whether the infant slow wave response is the precursor to the adult P300 In order to investigate the neurophysiological mechanisms related to the infant 's preference of maternal stimuli over other stimuli ,  auditory event-related potentials ( ERPs ) were recorded in responses to the mother 's voice and to a voice of an unfamiliar female in 15 infants at the age of 4 months . Stimuli were presented in intermittent and alternating trains of four identical stimuli ( mother 's voice or an unfamiliar voice ) . A significant amplitude difference was observed in the responses . This was seen as a negative ' shift ' in the responses to mother 's voice after approximately 350 ms . The finding suggests that the infants allocate more attention to process their own mothers ' voices compared to unfamiliar voices and it may work in favor of establishing and strengthening an emotional tie between the infant and its mother 
    Output:
    
The review ed infant data suggest that ( a ) early in development , emotion enhances the sensory processing of faces and voices , ( b )  infants ' ability to allocate increased attentional re sources to negative emotional information develops earlier in the vocal domain than in the facial domain , and ( c ) at least by the age of 7 months , infants  reliably match and recognize emotional information across face and voice