english: SR: -- and because normally brain cells don't respond to pulses of light, so those that would respond to pulses of light are those that contain a light-sensitive switch.
non_english: SR: Ki normalde beyin hücreleri ışık sinyallerine yanıt vermezler, yani ışık sinyallerine yanıt verenler ışığa duyarlı anahtarlara sahip olanlar olacaktır.