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Hrithik Roshan (English: , born 10 January 1974) is an Indian actor who appears in Bollywood films. He has portrayed a variety of characters and is known for his dancing skills. One of the highest-paid actors in India, he has won many awards, including six Filmfares, four for Best Actor and one each for Best Debut and Best Actor (Critics). Starting in 2012, he appeared in Forbes India's Celebrity 100 based on his income and popularity.
Roshan was born on 10 January 1974 in Mumbai to a Punjabi family prominent in Bollywood. His father, film director Rakesh Roshan, is the son of music director Roshanlal Nagrath; his mother, Pinky, is the daughter of producer and director J. Om Prakash. His uncle, Rajesh, is a music composer. Roshan has an older sister, Sunaina, and was educated at the Bombay Scottish School. Roshan is of part Bengali ancestry from his paternal grandmother's side. Although Roshan practices Hinduism, he says that "I'm not religious. I don't visit temples. But I hope there is a superpower." Roshan felt isolated as a child; he was born with an extra thumb fused to the one on his right hand, which led some of his peers to avoid him. He has stammered since the age of six; this caused him problems at school, and he feigned injury and illness to avoid oral tests. He was helped by daily speech therapy. Roshan's grandfather, Prakash first brought him on-screen at the age of six in the film Aasha (1980); he danced in a song enacted by Jeetendra, for which Prakash paid him Rs100 (US$1.50). Roshan made uncredited appearances in various family film projects, including his father's production Aap Ke Deewane (1980). In Prakash's Aas Paas (1981), he appeared in the song "Shehar Main Charchi Hai". The actor's only speaking role during this period came when he was 12; he was seen as Govinda, the title character's adopted son, in Prakash's Bhagwaan Dada (1986). Roshan decided that he wanted to be a full-time actor, but his father insisted that he focus on his studies. In his early 20s, he was diagnosed with scoliosis that would not allow him to dance or perform stunts. Initially devastated, he eventually decided to become an actor anyway. Around a year after the diagnosis, he took a chance by jogging on a beach when he was caught in a downpour. There was no pain, and becoming more confident, he was able to increase his pace with no adverse effects. Roshan sees this day as "the turning point of [his] life." Roshan attended Sydenham College, where he took part in dance and music festivals while studying, graduating in commerce. Roshan assisted his father on four films--Khudgarz (1987), King Uncle (1993), Karan Arjun (1995) and Koyla (1997)--while also sweeping the floor and making tea for the crew. After pack-up, Roshan would enact Shah Rukh Khan's scenes from Koyla and film himself to make a judgement about his performance as an actor. While he assisted his father, he studied acting under Kishore Namit Kapoor.
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When did he begin acting?

Answer:
Prakash first brought him on-screen at the age of six in the film Aasha (1980); he danced in a song enacted by Jeetendra,

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Henry Gustav Molaison (February 26, 1926 - December 2, 2008), known widely as H.M., was an American memory disorder patient who had a bilateral medial temporal lobectomy to surgically resect the anterior two thirds of his hippocampi, parahippocampal cortices, entorhinal cortices, piriform cortices, and amygdalae in an attempt to cure his epilepsy. Although the surgery was partially successful in controlling his epilepsy, a severe side effect was that he became unable to form new memories. H.M. was widely studied from late 1957 until his death in 2008. His case played an important role in the development of theories that explain the link between brain function and memory, and in the development of cognitive neuropsychology, a branch of psychology that aims to understand how the structure and function of the brain relates to specific psychological processes.
The study of Molaison revolutionized the understanding of the organization of human memory. It has provided broad evidence for the rejection of old theories and the formation of new theories on human memory, in particular about its processes and the underlying neural structures (cf. Kolb & Whishaw, 1996). In the following, some of the major insights are outlined. Molaison's brain was the subject of an anatomical study funded by the Dana Foundation and the National Science Foundation. The aim of the project, headed by Jacopo Annese, of The Brain Observatory at UC San Diego, was to provide a complete microscopic survey of the entire brain to reveal the neurological basis of Molaison's historical memory impairment at cellular resolution. On December 4, 2009, Annese's group acquired 2401 brain slices, with only two damaged slices and 16 potentially problematic slices. The digital 3D reconstruction of his brain was finished at the beginning of 2014. The results of the study were published in Nature Communications for January 2014. The researchers found, to their surprise, that half of H.M.'s hippocampus had survived the 1953 surgery, which has deep implications on past and future interpretations of H.M.'s neurobehavioral profile and of the previous literature describing H.M. as a 'pure' hippocampus lesion patient. Additionally, a previously unexpected discrete lesion was discovered in the prefrontal cortex. These findings suggest revisiting raw data from behavioral testing. A three-dimensional virtual model of the brain allowed the dynamics of the surgery to be reconstructed; it was found that the brain damage above the left orbit could have been created by Dr. Scoville when he lifted the frontal lobe to reach into the medial temporal lobes. The article also describes the general neuropathological state of the brain via multiple imaging modalities. As H.M. was 82 when he died, his brain had aged considerably. Several pathological features were discovered, some severe, which had contributed to his cognitive decline. The digital atlas of HM's brain was made publicly available on the Internet free of charge; its "permanence on the web relies on contributions from users".
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Who studied Molaison's brain?

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The aim of the project, headed by Jacopo Annese, of The Brain Observatory at UC San Diego,