หลอดไฟฟ้า, สมอง, แบบแผน, ไม่มีรอยต่อ, ใจ, ความคิด, ทางใจ, จิตวิทยา, การสร้างความคิด, ความเข้าใจ, สติ
Public Domain
ภาพถ่ายปลอดค่าลิขสิทธิ์ที่เกี่ยวข้อง
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