On the opposite end of the spectrum is the role creativity plays in relationship to low dopamine. Anxiety and creativity may be linked for some people, largely due to the way imagined outcomes can be positive or negative. Both of these mental states may be exhibited in people with low dopamine levels. A student whose imagination runs to the negative will conjure up all kinds of perilous potential outcomes in performance and practice. These fantasies manifest in halting movements or extensive tension that limit success even further. As much as we encourage creativity, we would do well to check the nature of the creativity when it comes to movement.
Stephen Sitarski reports honestly on his travails with depression and anxiety in the above link. Notice how his creative thinking process disrupted his success. Notice he suffered from another sign of low dopamine: joint pain.
Creativity for movement can also go horribly wrong when the performer has limited knowledge of physical structure. A student who is moving according to confusions, fuzzy metaphors, or incorrect knowledge about how the body is structured is going to lack fluidity in movement. The series of posts under Finger Play and Cans of Word Worms include valuable information on Body Mapping, the process of conscious correcting and refining of the body map to find graceful, coordinated movement.
Check www.bodymap.org for resources on Body Mapping.
While we have little or no control over our students' basic health needs, we can observe movement that suggests stress or negative fantasies. As teachers, we can address stress from a musician's standpoint and help students to use their imaginations in more productive ways.