Holistic Tonal Assessment
Holistic tonal assessment involves a systematic approach to evaluating the expression of neurological tone throughout the body. This process is typically conducted through a combination of tactile palpation and visual observation. At its core, Bowen therapy relies on the palpatory assessment that is embedded within each Bowen move. By palpating resting tension states in significant structures, such as biceps femoris, the paraspinal muscle bundles, and the Achilles tendons, clinicians can identify subtle variations in tone that may reflect underlying dysfunction. In most cases, palpatory findings are supported by visual observation( see Figure 1). Developing proficiency in this form of assessment requires specific training to ensure that structural artefacts do not distort the interpretation of tonal patterns.
The assessment is termed holistic because it conceptualises the body’ s systems— including the CNS, its meningeal structures, and musculoskeletal components— as an integrated and continuous functional unit. Within this framework, neuromeningeal tension states are understood to be associated with biomechanical disturbances at various dural attachment sites. As such, this method allows for the identification and treatment of dysfunctions not limited to the site of the patient’ s symptom presentation but extending to remote, interconnected anatomical regions.
In relatively uncomplicated presentations involving a single dysfunction site, resolution of the primary lesion typically results in restoration of tonal symmetry. Conversely, in chronic or complex cases, therapeutic intervention at one site may address one layer of dysfunction,
12, 25
allowing another layer to emerge. The ability to observe and interpret these transient changes enables the therapist to access deeper, otherwise concealed layers of dysfunction, thereby supporting a more comprehensive, holistic, and
23-26, 30-32 effective treatment strategy.
In clinic, real-time holistic tonal assessment allows us to recognise three distinct“ modes” for the patient:
1. Tonal symmetry – a prevailing state of tonal symmetry is an indication of healthy, balanced neuromeningeal function.
2. Tonal asymmetry – tonal asymmetry is an indicator of dural irritation. It represents a systemic neuromusculoskeletal adaptation and compensatory response, typically arising
from a sustained state of dysfunction associated with one or more of the dural attachment sites.
3. The Window of Symmetry – a temporary state of tonal equilibrium that arises following one or more effective therapeutic interventions. This state may persist for several hours, days, or, in some cases, extend beyond a week. Despite its temporary nature, this phenomenon holds significant clinical relevance for practitioners of complementary manual therapies, such as Bowen therapy( see Figure 1).
We propose the transition from a state of tonal asymmetry to temporary symmetry illustrates a measurable shift in how the CNS is responding to neuromeningeal dysfunction. Although the primary dysfunction may remain unresolved, the emergence of this symmetrical state suggests that the CNS has transitioned from a compensatory mode— focused on adaptation and protection— to an integrative or corrective mode, actively engaging in the resolution of underlying dysfunction.
Ongoing holistic assessment provides valuable insights into the multifaceted nature of dysfunction, particularly in complex, multi-layered clinical presentations. 25, 28 Each identifiable layer of dysfunction is regarded as an adaptive response by the body to preserve the integrity of vital structures. Over time, multiple layers of dysfunction may accumulate, contributing to persistent or chronic symptomatology that may manifest across diverse and seemingly
8, 25, 26, 28, 29 unrelated bodily regions.
Figure 1. A visual demonstration of tonal asymmetry( prior to treatment) and the Window of Symmetry( following treatment). Note: While an image cannot convey tactile findings, in this instance, palpation revealed increased tension in the left Achilles tendon and the left lumbar paraspinal muscles. This tonal asymmetry responded to a right-sided scalene release.
158 | vol31 | no3 | JATMS