Adapted README for no_raw files

README.md

@@ -83,6 +83,8 @@ The resulting Neo objects are fully annotated and processed, similar to what the
 
 In addition, `l101210-001.nix` will contain a downsampled version of the raw 30Khz data (i.e., the LFP) that is comparable to the online (hardware) downsampled ns2 LFP data that is supplied with `i140703-001`. Here, a 4th order, 250 Hz low pass Butterworth filter was applied using phase preservation and SOS, following a 30-fold downsampling. The structure of both files therefore becomes nearly identical. 
 
+Next to `l101210-001.nix` and `l101210-001.nix`, the directory also contains the files `l101210-001_no_raw.nix` and `l101210-001_no_raw.nix`. These files do not contain the raw electrode signals sampled at 30kHz, and are therefore considerably more light-weight in terms of file size.
+
 The code to produce the Nix files from the source files in the dataset directory is given in `convert_to_nix.py` in the `code` subdirectory.
 
 ### Directory datasets_matlab