Processing of multi-dimensional stimuli: P300 component of the event-related brain potential during mental comparison of compound digits

The appraisal of facial beauty is rapid but not mandatory

“…The finding that emotion-related LPC effects are affected by response mode should be considered in further ERP research. Several studies have shown the P300 to reflect, besides emotional dimensions, the distance between a current stimulus (mostly numerical or a symbol) and a reference point derived from an internal model about relevant stimuli (see, e.g., Ullsperger & Grune, 1995). The clear U-shaped relationship between attractiveness ratings and LPC amplitudes might therefore arise from the maximal distance of very non/attractive faces from the reference point-derived from intermediate faces.…”

“…However, in facial attractiveness, the allocation of attention does not seem to be mandatory, because the ef-f f fects were absent in the gender classification task-that is, when attention was allocated to task-relevant dimensions other than attractiveness. Obviously, the internal continuum or reference point (see Ullsperger & Grune, 1995) of facial attractiveness-as far as it is reflected in ERP measures-is not derived automatically when the task requires decisions about faces that are unrelated to attractiveness. The task dependency of the facial attractiveness effects in ERPs argues against an underlying mechanism tied in a reflexive, bottom-up fashion to sexual attraction or reproductive fitness.…”

A neural model of how the brain represents and compares multi-digit numbers: spatial and categorical processes

“…Most brain-imaging techniques, such as PET and fMRI, do not yet possess a sufficient temporal resolution (on the order of 10 -100 ms) to support or disprove this hypothesis. Several ERP studies (Ullsperger & Grune, 1995) have, however, detected smaller P300 amplitudes for smaller numerical distances.…”

The pragmatic meanings conveyed by function words in Chinese sentences: An ERP study

“…Firstly, there are numerals in the sentences in Type 3 which would probably lead to the appearance of P300. Ullsperger and Grune (1995) discovered that when different numbers were compared in quantity, the amplitude of P300 increases when the difference between numbers increases. Turconi, Jemel, Rossion, and Seron (2004) required the participants to judge whether the numbers on the screen were larger or smaller than fifteen, and also observed that the amplitude of the P300 is proportional to the distance between these numbers and fifteen.…”