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Brain's Prefrontal Region Lets Creativity Flow in Jazz Improvisation

By MedImaging staff writers
Posted on 24 Mar 2008
Scientists have found that when jazz musicians are engaged in the highly creative and spontaneous activity known as improvisation, a large region of the brain involved in monitoring one's performance is shut down, whereas a small region involved in organizing self-initiated thoughts and behaviors is highly activated. The researchers theorize that this and several related patterns are likely to be key indicators of a brain that is engaged in highly creative thought.

During the study, funded by the U.S. National Institute on Deafness and Other Communication Disorders (NIDCD; Bethesda, MD, USA), a division of the U.S. National Institutes of Health (Bethesda, MD, USA), six highly trained jazz musicians played the keyboard under two scenarios while in the functional magnetic resonance imaging (fMRI) scanner. fMRI is an imaging tool that measures the amount of blood traveling to various regions of the brain as a means of assessing the amount of neural activity in those areas. The study was published in the February 27, 2008, issue of the journal Public Library of Science (PLoS) One.

"The ability to study how the brain functions when it is thinking creatively has been difficult for scientists because of the many variables involved,” said James F. Battey, Jr., M.D., Ph.D., director of the NIDCD. "Through some creative thinking of their own, these researchers designed a protocol in which jazz musicians could play a keyboard while in the confines of a functional MRI scanner. And in doing so, they were able to pinpoint differences in how the brain functions when the musicians are improvising as opposed to playing a simple melody from memory.”

The study was conducted by researchers of NIDCD's Division of Intramural Research. Investigators of the study were Charles J. Limb, M.D., who was then a research fellow with NIDCD, and Allen R. Braun, M.D., chief of the division's language section. Dr. Limb is now an otolaryngologist at the Johns Hopkins University School of Medicine (Baltimore, MD, USA) and faculty member at the university's Peabody Conservatory of Music.

The first scenario, called the Scale paradigm, was based on a simple C major scale. Using only their right hand, the volunteers first played the scale up and down in quarter notes, an activity they, as accomplished musicians, had performed many times before. Next, they were asked to improvise, though they were limited to playing quarter notes within the C major scale. "Although the musicians were indeed improvising, it was a relatively low-level form of improvisation, musically speaking,” said Dr. Limb.

The second scenario, called the Jazz paradigm, addressed higher-level musical improvisation. This paradigm was based on a novel blues melody written by Dr. Limb that the volunteers had memorized beforehand. Again, using only their right hand, the musicians would play the tune exactly as they had memorized it, only this time accompanied through headphones by a pre-recorded jazz quartet. When they were asked to improvise, the musicians listened to the same audio background, but they were free to spontaneously play whatever notes they wished.

All of this was accomplished while the musicians lay on their backs with their heads and torsos inside an fMRI scanner and their knees bent upward. The plastic keyboard, which was shortened to fit inside the scanner and which had its magnetic parts removed for safety, rested on the musicians' knees. A mirror placed over the volunteers' eyes, together with the headphones, helped the musicians see and hear what they were playing. The resulting fMRI scans recorded the amount of change in neural activity--increases and decreases--between the improvised and memorized versions.

One significant finding was that the brain scans were nearly identical for the low-level and high-level forms of improvisation, thus supporting the researchers' hypothesis that the change in neural activity was due to creativity and not the complexity of the task. If the latter were the case, there would have been a more noticeable difference between the Scale and Jazz paradigms, since the Jazz paradigm was significantly more complex.

Moreover, the researchers found that much of the change between improvisation and memorization occurred in the prefrontal cortex, the region of the frontal lobe of the brain that helps people think and problem-solve and that provides a sense of self. Interestingly, the large portion responsible for monitoring one's performance (dorsolateral prefrontal cortex) shuts down completely during improvisation, while the much smaller, centrally located region at the foremost part of the brain (medial prefrontal cortex) increases in activity.


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88 (!!!!! 2768.9933776855): SELECT fid FROM jos_deeppockets_archive WHERE cat=10 AND id=275870000 AND (type='deeppockets_item' OR type='deeppockets_item_link') AND published='1' LIMIT 1
89 (135.89859008789): SELECT id,name,title FROM jos_deeppockets WHERE cat=10 AND TYPE='file_folder' AND published=1 AND id != 294743300 AND id != 294743301 AND id != 294743302 AND id != 294743303 AND id != 294743304 AND id != 294743305 AND id != 294743306 AND id != 294743307 AND id != 294743308 AND id != 294743309 AND id != 294743310 AND metakey != 'aacc' ORDER BY `ordering`
90 (46.968460083008): SELECT show_live FROM jos_com_show_setting LIMIT 1
91 (28.848648071289): SELECT show_live FROM jos_com_show_setting LIMIT 1
92 (25.033950805664): SELECT show_live FROM jos_com_show_setting LIMIT 1
93 (25.033950805664): SELECT show_live FROM jos_com_show_setting LIMIT 1
94 (25.033950805664): SELECT show_live FROM jos_com_show_setting LIMIT 1
95 (25.98762512207): SELECT show_live FROM jos_com_show_setting LIMIT 1
96 (25.98762512207): SELECT show_live FROM jos_com_show_setting LIMIT 1
97 (25.033950805664): SELECT show_live FROM jos_com_show_setting LIMIT 1
98 (25.033950805664): SELECT show_live FROM jos_com_show_setting LIMIT 1
99 (25.033950805664): SELECT show_live FROM jos_com_show_setting LIMIT 1
100 (25.033950805664): SELECT show_live FROM jos_com_show_setting LIMIT 1
101 (25.033950805664): SELECT show_live FROM jos_com_show_setting LIMIT 1
102 (24.795532226562): SELECT show_live FROM jos_com_show_setting LIMIT 1
103 (25.98762512207): SELECT show_live FROM jos_com_show_setting LIMIT 1
104 (178.09867858887): SELECT * FROM jos_deeppockets WHERE 1=1 AND id=275870000 AND published='1' union SELECT * FROM jos_deeppockets_archive WHERE 1=1 AND id=275870000 AND published='1' LIMIT 1
105 (102.04315185547): SELECT * FROM jos_deeppockets WHERE 1=1 AND id=275870000 AND published='1' union SELECT * FROM jos_deeppockets_archive WHERE 1=1 AND id=275870000 AND published='1' LIMIT 1
106 (375.98609924316): SELECT dp.*, ch.title as channel, exp.name as author_name, exp.specialization as author_specialization, exp.images as author_photo FROM jos_deeppockets as dp LEFT JOIN jos_experts as exp ON exp.id = dp.author LEFT JOIN jos_deeppockets as ch ON dp.fid = ch.id WHERE 1=1 AND dp.cat=10 AND dp.id=275870000 AND (dp.type='deeppockets_item' OR dp.type='deeppockets_item_link') AND dp.published='1' LIMIT 1
107 (122.0703125): SELECT dp.*, ch.title as channel, exp.name as author_name, exp.specialization as author_specialization, exp.images as author_photo FROM jos_deeppockets_archive as dp LEFT JOIN jos_experts as exp ON exp.id = dp.author LEFT JOIN jos_deeppockets as ch ON dp.fid = ch.id WHERE 1=1 AND dp.cat=10 AND dp.id=275870000 AND (dp.type='deeppockets_item' OR dp.type='deeppockets_item_link') AND dp.published='1' LIMIT 1
108 (!!!!! 3787.9943847656): SELECT * FROM jos_deeppockets WHERE 1=1 AND id=275870000 AND published='1' union SELECT * FROM jos_deeppockets_archive WHERE 1=1 AND id=275870000 AND published='1' LIMIT 1
109 (58.889389038086): SELECT * FROM jos_deeppockets WHERE 1=1 AND id=275870000 AND published='1' union SELECT * FROM jos_deeppockets_archive WHERE 1=1 AND id=275870000 AND published='1' LIMIT 1
110 (199.79476928711): SELECT dp.*, ch.title as channel, exp.name as author_name, exp.specialization as author_specialization, exp.images as author_photo FROM jos_deeppockets as dp LEFT JOIN jos_experts as exp ON exp.id = dp.author LEFT JOIN jos_deeppockets as ch ON dp.fid = ch.id WHERE 1=1 AND dp.id=275870000 AND (dp.type='deeppockets_item' OR dp.type='deeppockets_item_link') AND dp.published='1' LIMIT 1
111 (477.07557678223): SELECT dp.*, ch.title as channel, exp.name as author_name, exp.specialization as author_specialization, exp.images as author_photo FROM jos_deeppockets_archive as dp LEFT JOIN jos_experts as exp ON exp.id = dp.author LEFT JOIN jos_deeppockets as ch ON dp.fid = ch.id WHERE 1=1 AND dp.id=275870000 AND (dp.type='deeppockets_item' OR dp.type='deeppockets_item_link') AND dp.published='1' LIMIT 1
112 (501.15585327148): SELECT dp.name, dp.id, dp2.name as channel, ex.name as author_name, ex.specialization, ex.images FROM jos_deeppockets as dp LEFT JOIN jos_experts as ex ON ex.id = dp.author LEFT JOIN jos_deeppockets as dp2 ON dp2.id = dp.fid WHERE dp.author != 0 AND dp.cat = 10 AND dp.published = 1 AND ( (dp.fid = 294743300) OR (dp.fid = 294743301) OR (dp.fid = 294743302) OR (dp.fid = 294743303) OR (dp.fid = 294743304) OR (dp.fid = 294743305) OR (dp.fid = 294743306) OR (dp.fid = 294743307) OR (dp.fid = 294743308) OR (dp.fid = 294743309) OR (dp.fid = 294743310) ) ORDER BY RAND() LIMIT 1
113 (308.99047851562): SELECT dp.name, dp.id, dp2.name as channel, ex.name as author_name, ex.specialization, ex.images FROM jos_deeppockets as dp LEFT JOIN jos_experts as ex ON ex.id = dp.author LEFT JOIN jos_deeppockets as dp2 ON dp2.id = dp.fid WHERE dp.author != 0 AND dp.cat = 10 AND dp.published = 1 AND ( (dp.fid = 294743300) OR (dp.fid = 294743301) OR (dp.fid = 294743302) OR (dp.fid = 294743303) OR (dp.fid = 294743304) OR (dp.fid = 294743305) OR (dp.fid = 294743306) OR (dp.fid = 294743307) OR (dp.fid = 294743308) OR (dp.fid = 294743309) OR (dp.fid = 294743310) ) ORDER BY RAND() LIMIT 1
114 (77.009201049805): SELECT * FROM jos_deeppockets WHERE 1=1 AND id=275870000 AND published='1' union SELECT * FROM jos_deeppockets_archive WHERE 1=1 AND id=275870000 AND published='1' LIMIT 1
115 (46.014785766602): SELECT * FROM jos_deeppockets WHERE 1=1 AND id=275870000 AND published='1' union SELECT * FROM jos_deeppockets_archive WHERE 1=1 AND id=275870000 AND published='1' LIMIT 1
116 (46.014785766602): SELECT * FROM jos_deeppockets WHERE 1=1 AND id=275870000 AND published='1' union SELECT * FROM jos_deeppockets_archive WHERE 1=1 AND id=275870000 AND published='1' LIMIT 1
117 (38.862228393555): SELECT * FROM jos_deeppockets WHERE 1=1 AND id=275870000 AND published='1' union SELECT * FROM jos_deeppockets_archive WHERE 1=1 AND id=275870000 AND published='1' LIMIT 1
118 (42.200088500977): SELECT * FROM jos_deeppockets WHERE 1=1 AND id=275870000 AND published='1' union SELECT * FROM jos_deeppockets_archive WHERE 1=1 AND id=275870000 AND published='1' LIMIT 1
119 (36.954879760742): SELECT * FROM jos_deeppockets WHERE 1=1 AND id=275870000 AND published='1' union SELECT * FROM jos_deeppockets_archive WHERE 1=1 AND id=275870000 AND published='1' LIMIT 1
120 (41.007995605469): SELECT * FROM jos_deeppockets WHERE 1=1 AND id=275870000 AND published='1' union SELECT * FROM jos_deeppockets_archive WHERE 1=1 AND id=275870000 AND published='1' LIMIT 1
121 (35.04753112793): SELECT * FROM jos_deeppockets WHERE 1=1 AND id=275870000 AND published='1' union SELECT * FROM jos_deeppockets_archive WHERE 1=1 AND id=275870000 AND published='1' LIMIT 1
122 (169.03877258301): SELECT * FROM trending_articles WHERE `journal_id` = 10 AND `timestamp` <= NOW() + INTERVAL 7 DAY ORDER BY `order`
123 (!!!!! 42491.912841797): SELECT * FROM jos_deeppockets WHERE jos_deeppockets.cat = 10 AND jos_deeppockets.type = 'deeppockets_item' AND jos_deeppockets.published = 1 AND jos_deeppockets.created + INTERVAL 14 DAY >= NOW() ORDER BY jos_deeppockets.hits DESC LIMIT 7
124 (!!!!! 2552.9861450195): SELECT fid FROM jos_deeppockets WHERE cat=10 AND id=275870000 AND type='deeppockets_item' AND published='1' union SELECT fid FROM jos_deeppockets_archive WHERE cat=10 AND id=275870000 AND type='deeppockets_item' AND published='1' LIMIT 1
125 (!!!!! 7144.9279785156): ( SELECT dp.id, dp.name, dp.title, dp.video, dp.video_source, dp.created FROM jos_deeppockets AS dp WHERE dp.video != '' AND dp.video_source != '' AND dp.cat = 10 AND dp.published = 1 AND dp.type != 'deeppockets_item_link' ORDER BY created DESC LIMIT 3 ) UNION ( SELECT dpa.id, dpa.name, dpa.title, dpa.video, dpa.video_source, dpa.created FROM jos_deeppockets_archive AS dpa WHERE dpa.video != '' AND dpa.video_source != '' AND dpa.cat = 10 AND dpa.published = 1 AND dpa.type != 'deeppockets_item_link' ORDER BY created DESC LIMIT 3 ) ORDER BY created DESC LIMIT 3
126 (75.101852416992): ( SELECT dp.id, dp.name, dp.title, dp.video, dp.video_source, dp.created FROM jos_deeppockets AS dp WHERE dp.video != '' AND dp.video_source != '' AND dp.cat = 10 AND dp.published = 1 AND dp.type != 'deeppockets_item_link' ORDER BY created DESC LIMIT 3 ) UNION ( SELECT dpa.id, dpa.name, dpa.title, dpa.video, dpa.video_source, dpa.created FROM jos_deeppockets_archive AS dpa WHERE dpa.video != '' AND dpa.video_source != '' AND dpa.cat = 10 AND dpa.published = 1 AND dpa.type != 'deeppockets_item_link' ORDER BY created DESC LIMIT 3 ) ORDER BY created DESC LIMIT 3
127 (282.04917907715): SELECT dp.id, dp.name, dp.title, dp.video, dp.video_source, dp.created FROM jos_deeppockets AS dp WHERE dp.id = 294803337 LIMIT 1
128 (38.14697265625): SELECT dp.id, dp.name, dp.title, dp.video, dp.video_source, dp.created FROM jos_deeppockets AS dp WHERE dp.id = 294803337 LIMIT 1
129 (221.01402282715): SELECT dp.id, dp.name, dp.title, dp.video, dp.video_source, dp.created FROM jos_deeppockets AS dp WHERE dp.id = 294803276 LIMIT 1
130 (34.809112548828): SELECT dp.id, dp.name, dp.title, dp.video, dp.video_source, dp.created FROM jos_deeppockets AS dp WHERE dp.id = 294803276 LIMIT 1
131 (256.06155395508): SELECT dp.id, dp.name, dp.title, dp.video, dp.video_source, dp.created FROM jos_deeppockets_archive AS dp WHERE dp.id = 294803276 LIMIT 1
132 (32.901763916016): SELECT dp.id, dp.name, dp.title, dp.video, dp.video_source, dp.created FROM jos_deeppockets_archive AS dp WHERE dp.id = 294803276 LIMIT 1
133 (209.09309387207): SELECT dp.id, dp.name, dp.title, dp.video, dp.video_source, dp.created FROM jos_deeppockets AS dp WHERE dp.id = 294802958 LIMIT 1
134 (32.901763916016): SELECT dp.id, dp.name, dp.title, dp.video, dp.video_source, dp.created FROM jos_deeppockets AS dp WHERE dp.id = 294802958 LIMIT 1
135 (438.92860412598): SELECT * FROM jos_deeppockets WHERE 1=1 AND id=275870000 AND (type='deeppockets_item' OR type='deeppockets_item_link') AND published='1' LIMIT 1
136 (307.08312988281): SELECT * FROM jos_deeppockets_archive WHERE 1=1 AND id=275870000 AND (type='deeppockets_item' OR type='deeppockets_item_link') AND published='1' LIMIT 1
137 (189.06593322754): SELECT name FROM jos_deeppockets WHERE id=212
138 (31.948089599609): SELECT name FROM jos_deeppockets WHERE id=212
139 (517.12989807129): SELECT *, DATE_FORMAT(publish_up,'%d %b %Y') AS date_publish_up, DATE_FORMAT(publish_down,'%d %b %Y') AS date_publish_down FROM jos_events WHERE state=1 AND publish_up > NOW() and extra_info REGEXP '((;)|(^))212((;)|($))' AND catid IN (0,110) ORDER BY publish_up ASC LIMIT 3
140 (428.91502380371): SELECT *, DATE_FORMAT(publish_up,'%d %b %Y') AS date_publish_up, DATE_FORMAT(publish_down,'%d %b %Y') AS date_publish_down FROM jos_events WHERE state=1 AND publish_up > NOW() and extra_info REGEXP '((;)|(^))212((;)|($))' AND catid IN (0,110) ORDER BY publish_up ASC LIMIT 3
141 (68.902969360352): SELECT * FROM jos_deeppockets WHERE 1=1 AND id=275870000 AND published='1' union SELECT * FROM jos_deeppockets_archive WHERE 1=1 AND id=275870000 AND published='1' LIMIT 1
142 (41.961669921875): SELECT * FROM jos_deeppockets WHERE 1=1 AND id=275870000 AND published='1' union SELECT * FROM jos_deeppockets_archive WHERE 1=1 AND id=275870000 AND published='1' LIMIT 1
143 (!!!!! 8646.9650268555): TRUNCATE TABLE jos_trademed_module
144 (94.890594482422): SELECT dp.*, ch.title as channel, exp.name as author_name, exp.specialization as author_specialization, exp.images as author_photo FROM jos_deeppockets as dp LEFT JOIN jos_experts as exp ON exp.id = dp.author LEFT JOIN jos_deeppockets as ch ON dp.fid = ch.id WHERE 1=1 AND dp.cat=10 AND dp.id=275870000 AND (dp.type='deeppockets_item' OR dp.type='deeppockets_item_link') AND dp.published='1' LIMIT 1
145 (56.982040405273): SELECT dp.*, ch.title as channel, exp.name as author_name, exp.specialization as author_specialization, exp.images as author_photo FROM jos_deeppockets_archive as dp LEFT JOIN jos_experts as exp ON exp.id = dp.author LEFT JOIN jos_deeppockets as ch ON dp.fid = ch.id WHERE 1=1 AND dp.cat=10 AND dp.id=275870000 AND (dp.type='deeppockets_item' OR dp.type='deeppockets_item_link') AND dp.published='1' LIMIT 1
146 (792.02651977539): SELECT * FROM jos_deeppockets WHERE 1=1 AND id=275870000 AND (type='deeppockets_item' OR type='deeppockets_item_link') AND published='1' LIMIT 1
147 (97.036361694336): SELECT * FROM jos_deeppockets WHERE 1=1 AND id=275870000 AND (type='deeppockets_item' OR type='deeppockets_item_link') AND published='1' LIMIT 1
148 (69.856643676758): SELECT * FROM jos_deeppockets WHERE 1=1 AND id=275870000 AND published='1' union SELECT * FROM jos_deeppockets_archive WHERE 1=1 AND id=275870000 AND published='1' LIMIT 1
149 (45.061111450195): SELECT * FROM jos_deeppockets WHERE 1=1 AND id=275870000 AND published='1' union SELECT * FROM jos_deeppockets_archive WHERE 1=1 AND id=275870000 AND published='1' LIMIT 1
150 (!!!!! 1108.8848114014): SELECT jos_item.* FROM jos_item INNER JOIN jos_number ON jos_item.numberID=jos_number.id WHERE 1=1 AND (jos_item.imgMini<>'') AND jos_item.type='L' AND jos_item.numberID= ( SELECT jos_number.id FROM jos_number WHERE jos_number.journalID IN (10) and jos_number.id in (select distinct jos_number.id from jos_number join jos_item on jos_item.numberid=jos_number.id where jos_item.type='P') ORDER BY (CONVERT(SUBSTRING(issue,1,2),SIGNED) + (CONVERT(SUBSTRING(issue,3,2),SIGNED)*100)) DESC LIMIT 0,1 ) ORDER BY RAND() DESC LIMIT 6
151 (74.148178100586): SELECT * FROM jos_deeppockets WHERE 1=1 AND id=275870000 AND published='1' union SELECT * FROM jos_deeppockets_archive WHERE 1=1 AND id=275870000 AND published='1' LIMIT 1
152 (42.915344238281): SELECT * FROM jos_deeppockets WHERE 1=1 AND id=275870000 AND published='1' union SELECT * FROM jos_deeppockets_archive WHERE 1=1 AND id=275870000 AND published='1' LIMIT 1
153 (38.862228393555): SELECT fid FROM jos_deeppockets WHERE cat=10 AND id=275870000 AND type='deeppockets_item' AND published='1' union SELECT fid FROM jos_deeppockets_archive WHERE cat=10 AND id=275870000 AND type='deeppockets_item' AND published='1' LIMIT 1
154 (36.001205444336): select distinct links.* from jos_textlinks links join jos_textlinks_placement placement on links.id=placement.link_id where journal_id=(10) and (channel_id=212 or channel_id is null)
155 (32.186508178711): select distinct links.* from jos_textlinks links join jos_textlinks_placement placement on links.id=placement.link_id where journal_id=(10) and (channel_id=212 or channel_id is null)
156 (35.04753112793): SELECT livesite FROM jos_dp_categories WHERE id=10 AND published='1' LIMIT 1
157 (142.81272888184): SELECT * FROM jos_deeppockets WHERE 1=1 AND id=275870000 AND published='1' union SELECT * FROM jos_deeppockets_archive WHERE 1=1 AND id=275870000 AND published='1' LIMIT 1
158 (51.021575927734): SELECT * FROM jos_deeppockets WHERE 1=1 AND id=275870000 AND published='1' union SELECT * FROM jos_deeppockets_archive WHERE 1=1 AND id=275870000 AND published='1' LIMIT 1
159 (106.0962677002): select jos_twitters.link from jos_twitters where cat=10
160 (27.894973754883): select jos_facebook.link from jos_facebook where cat=10
161 (28.133392333984): select jos_google_plus.link from jos_google_plus where cat=10
162 (27.894973754883): select jos_linkedin.link from jos_linkedin where cat=10
163 (238.89541625977): update jos_bannersmanager_banner set impmade=impmade+1 where id in(14615,14202,14203)
164 (!!!!! 1414.0605926514): insert into jos_banners_delta values (14615,'2025-06-30 23:54:01','216.73.216.249','view'),(14202,'2025-06-30 23:54:01','216.73.216.249','view'),(14203,'2025-06-30 23:54:01','216.73.216.249','view')