Procedural memories are subjected to the unconscious mind and can not be explained verbally (non-declarative) they are concerned with how to do something and not with the rules of what to do; whereas episodic memories can be stated verbally (declarative) because they are accessible through conscious endeavor. Procedural memories and episodic memories can also be distinguished between one another in terms of where they are physically located in the brain. Episodic memory is associated with the hippocampus whereas procedural memory is associated with the cerebellum. Such data is obtained by scanning the brain whilst that certain type of memory is active (Scanning the brain of someone riding a bike versus when they are recalling a childhood memory).