Hello Student

Yes one who passed MBBS can research in neuroscience PHD. But clinical practice will be hampered in it. Better to do MSc in neuroscience at then go for PhD and Get a lecturer job in any colleges or Universities. After MBBS doing PhD in neuroscience to some extent using credibility of practicing doctors qualification and skill  past experience and informations says so . Doing MSc in neuroscience and then after PhD in neuroscience will be very much fruitful and effective.click on the link below to know about PhD neuroscience colleges in India

https://medicine.careers360.com/colleges/list-of-phd-in-neurology-colleges-in-india

Hope this helps.