Table 4. Local minima of brain deactivations within limbic, basal ganglia, insula, and heteromodal sensory regions during improvisation.
Region | BA | Left Hemisphere | Right Hemisphere | ||||||
t-score | x | y | z | t-score | x | y | z | ||
Limbic/Paralimbic | |||||||||
Hypothalamus | - | −8.51 | −11 | −6 | −9 | −11.12 | 9 | −6 | −6 |
Amygdala | - | −14.64 | −24 | 0 | −18 | −7.205 | 28 | −1 | −16 |
HPC/PHPC-ventral | - | - | - | - | - | −12.49 | 27 | −24 | −18 |
HPC/PHPC-dorsal | - | −9.71 | −24 | −36 | −3 | −10.06 | 15 | −42 | 3 |
PHPC gyrus | 35,36 | −13.08 | −36 | −27 | −21 | −11.34 | 24 | −27 | −24 |
Posterior cingulate | 23,31 | −13.92 | −3 | −51 | 24 | −18.14 | 3 | −57 | 30 |
Temporal polar | 38,20 | −14.27 | −30 | 3 | −24 | −12.99 | 33 | 0 | −39 |
Basal ganglia | |||||||||
Ventral striatum | - | −15.41 | −30 | −12 | −9 | −13.12 | 27 | 6 | −9 |
Caudate | - | −7.03 | −12 | 15 | 11 | −10.37 | 9 | 15 | 3 |
Putamen | - | −6.61 | −29 | −3 | 6 | −10.76 | 27 | −15 | 6 |
Insula | |||||||||
Ant insula/pyriform cortex | - | −6.61 | −33 | 15 | −11 | −10.86 | 33 | 15 | 12 |
Mid Insula | - | −6.38 | −33 | 4 | 13 | −11.11 | 33 | 0 | 12 |
Post Insula | - | −12.85 | −33 | −24 | 9 | −6.02 | 42 | −11 | 7 |
Heteromodal sensory | |||||||||
Posterior STS | 21 | −17.77 | −51 | −57 | 18 | ||||
Angular gyrus | 39 | −17.12 | −45 | −69 | 30 | −9.98 | 51 | −54 | 24 |
All coordinates are described according to the Montreal Neurological Institute system, and were obtained through a conjunction analysis of data from ScaleImprov and JazzImprov. Abbreviations: HPC, hippocampal cortex; PHPC, parahippocampal cortex; Ant, anterior; Post, posterior; STS, superior temporal sulcus