Before revision:  However, the latent feature components recovered by these methods, particularly that of CNN , are often noisy and lack coherent structures , making it difficult to understand the underlying feature components that are used to construct the receptive fieldfeature tunings of the neurons .
After revision:  However, the constituent kernels recovered by these methods, particularly that of CNN , are often noisy and lack coherent structures , making it difficult to understand the underlying feature components that are used to construct the receptive fieldfeature tunings of the neurons .