สมอง, หลอดไฟฟ้า, ใจ, ความคิด, ทางใจ, กระเปาะ, สุขภาพจิต, ความเข้าใจ, ความตระหนัก, สติ, จิตใต้สำนึก
Public Domain
ภาพถ่ายปลอดค่าลิขสิทธิ์ที่เกี่ยวข้อง
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