Indeed, N300 is supposed to be particularly sensitive to affective features of stimuli rather than to physical characteristics.
Our study suggests that movement complexity is a key component of duration perception, and that the relative judgement of durations depends on spatio-temporal features of stimuli.
However, recent findings obtained with multivariate pattern analyses (MVPA) suggest that apparent category selectivity in these regions is dependent on more basic visual features of stimuli.
One way to differentiate between categorical and featural coding hypotheses is to test for residual categorical effects: effects of category selectivity that cannot be accounted for by visual features of stimuli.
This emotional deficit was neurophysiologically indexed, in HP subjects, by a decreased N300 component, which is supposed to be particularly sensitive to affective features of stimuli rather than to physical characteristics.
Recent studies that adopt this approach support a feature-based categorical coding hypothesis according to which regions of the ventral stream do indeed code for object category, but in a format at least partially based on the visual features of stimuli.
Horváth, Czigler, Sussman, & Winkler [44] demonstrated that mismatch responses can be elicited by both global and local features of stimuli.
In particular, SDAs were strongly modulated by the acoustic features of stimuli (e.g., frequency, intensity, ear of delivery and image acquisition) whereas ARMs were unaffected.
If a neuron encodes features of stimuli in the external world, such as the orientation of edges in the visual scene, then such fluctuations are a major computational problem.
First, generalization might be based on the perceptual features of stimuli.
