Courtesy of Dr Jamie Murray, this image shows topographic maps of scalp-recorded EEG illustrating a Left Parietal effect associated with recollection in an episodic memory task, during the time window 500-800ms after test stimulus presentation. Greater neural activity for high-precision than low-precision memory responses shows that the Left Parietal effect is sensitive to the precision of recollected information. The scale bar represents the voltage range (┬ÁV).

The image is taken from a recent study published in NeuroImage:

Murray JG, Howie CA, Donaldson DI. The neural mechanism underlying recollection is sensitive to the quality of episodic memory: Event related potentials reveal a some-or-none threshold. NeuroImage 2015; 120:298-308.