Analysis of event related potentials N170, specifically, will first need EEG datasets. Even though you have asked for report, and analysis methods, you didn't talk about the data.
DATA
Is it preprocessed? Clean and ready, or needs to be done. How have you collected data?
(I have designed and collected EEG data for various tasks for computational analysis, casusality analysis, facial expressions, recognizing familiar places, words etc.)
STATISTICAL ANALYSIS
There are lot of methods, and algorithms for analysis EEG in time domain and frequency domain, and together, e.g. wavelets. The distribution of EEG across frequencies, log values, spectrum, imaginary and real part and so on, analysis of the FFT plots, confidence score.
N170- ERP
Specific to face perception, so which datasets you are following up? MATLAB has a repository of many unversities that release propreitray readers, analysis packages. single-trial, early response classification. Design f bandpass and low-pass filters, around varous smapling rate, 4-10Hz band, different types of filters
Kindly let me know, if you are still looking. I'm a Research Scholar and teach UG and MS students in Computational Neuroscience dept at my university. Thanks!