Using event-related brain potentials (ERPs), we investigated the time course of facial expression processing in human subjects watching photographs fearful and neutral faces. Upright faces elicited a frontocentral positivity within 120 ms after stimulus presentation, which was followed by broadly distributed sustained beyond 250 post-stimulus. Emotional effects were delayed attenuated when inverted. In contrast, face-specific N170 component completely unaffected expression. We conclude that...

To investigate which stages in the structural encoding of faces are reflected by face-specific N170 component, ERPs (event-related brain potentials) were recorded response to different types face and non-face stimuli. The was strongly attenuated for cheek back views relative front profile views, demonstrating that it is not merely triggered head detection. Attenuated delayed components elicited lacking internal features as well without external features, suggesting exclusively sensitive...

Three experiments investigated the influence of unperceived events on response activation. Masked primers were presented before a target. On compatible trials, primes and targets identical; incompatible opposite responses assigned to them. Forced-choice performance indicated that prime identification was prevented by masking procedure, but overt motor activation as mirrored lateralized readiness potential (LRP) systematically influenced prime. The direction these effects unexpected:...

To find out whether attentional capture by irrelevant but salient visual objects is an exogenous bottom-up phenomenon, or can be modulated current task set, two experiments were conducted where the N2pc component was measured as electrophysiological marker of selection in response to spatially uninformative color singleton cues that preceded target arrays. When observers had report orientation a uniquely colored bar among distractor bars (color task), behavioral spatial cueing effects...

Abstract The N2pc component has recently become a popular tool in attention research. To investigate whether this exclusively reflects attentional target selection or also prior stages processing (covert orienting, target‐unspecific spatial attention), cuing procedure was combined with visual search task. In some blocks, informative cues indicated the side of upcoming singleton targets that were present on most trials among uniform distractors. other spatially uninformative, and no...

Abstract Recent behavioral and event-related brain potential (ERP) studies have revealed cross-modal interactions in endogenous spatial attention between vision audition, plus touch. The present ERP study investigated whether these reflect supramodal attentional control mechanisms, similar also exist audition Participants directed to the side indicated by a cue detect infrequent auditory or tactile targets at cued side. relevant modality (audition touch) was blocked. Attentional processes...

We examined visual search for color singleton targets, whose shape was discriminated. Critically, we varied the reward priority of colors (correct fast performance worth more bonus points red singletons than green singletons, or vice versa) to test whether event-related potential signatures selection can be affected by distinct priorities different target types, even when every has selected report. The N2pc component earlier and larger high- low-reward targets. This influence on correlated...

EVENT-RELATED brain potentials (ERPs) to intact faces and without eyes were compared ERPs elicited by houses find out whether the face-specific N170 component reflects activity of a cortical eye processor. When houses, face stimuli posterior negativity (N170) frontocentral positivity. amplitude was not affected presence or absence eyes, but delayed in response eyes. It is concluded that directly related regions sensitive more likely reflect processes involved structural encoding components.

Abstract Tactile-visual links in spatial attention were examined by presenting spatially nonpredictive tactile cues to the left or right hand, shortly prior visual targets hemifield. To examine coordinates of any cross-modal links, different postures examined. The hands either uncrossed, crossed so that hand lay field and vice versa. Visual judgments better on side where stimulated lay, though this effect was somewhat smaller with longer intervals between cue target, hands. Event-related...

Effects of dimensional overlap between stimuli and responses on partial response activation were investigated within a priming paradigm with the help event-related potentials. The likely position target stimulus (requiring left or right reaction) was indicated by an arrow precue. To test whether automatic processes are triggered cue, lateralized readiness potential computed. It found that congruent to direction cue activated about 200 ms after onset. This early process unaffected specific...

We measured the N2pc component as an electrophysiological indicator of attentional selection to investigate whether fearful faces can attract attention even when they are entirely task-irrelevant and is focused on another demanding visual monitoring task. Participants had detect infrequent luminance changes fixation cross, while ignoring stimulus arrays containing a face singleton (a among neutral faces, or faces) left right fixation. On trials without target change, was elicited by...