10. A system comprising: an analyzer to: divide a media instance into a first component and a second component, the first component and second component concurrently presented; correlate first physiological response data from a first subject exposed to media with the first component to form first correlated data; correlate the first physiological response data with the second component to form second correlated data; process the first correlated data to identify a first transition representative of a first change; process the second correlated data to identify a second transition representative of a second change; parse the first component into a first plurality of events based on the first transition; parse the second component into a second plurality of events based on the second transition; identify an event of the first plurality of events as a first candidate for modification based on the first change; identify an event of the second plurality of events as a second candidate for modification based on the second change; and an output to provide a first identity of the first candidate and a second identity of the second candidate.
10. A system comprising: an analyzer to: divide a media instance into a first component and a second component, the first component and second component concurrently presented; correlate first physiological response data from a first subject exposed to media with the first component to form first correlated data; correlate the first physiological response data with the second component to form second correlated data; process the first correlated data to identify a first transition representative of a first change; process the second correlated data to identify a second transition representative of a second change; parse the first component into a first plurality of events based on the first transition; parse the second component into a second plurality of events based on the second transition; identify an event of the first plurality of events as a first candidate for modification based on the first change; identify an event of the second plurality of events as a second candidate for modification based on the second change; and an output to provide a first identity of the first candidate and a second identity of the second candidate. 16. The system of claim 10 , wherein the analyzer is to: correlate second physiological response data from a second subject exposed to the media with the first component to form third correlated data; correlate the second physiological response data with the second component to form fourth correlated data; perform a first comparison of the first correlated data and the third correlated data; perform a second comparison the second correlated data and the fourth correlated data; detect a discrepancy between the first response data and the second response data based on at least one of the first comparison or the second comparison, the discrepancy being indicative of a polarizing event; and identify the polarizing event for modification.