Why do I feel this way? What is not working correctly? How do we know if I am actually getting better?
Those questions cannot be answered well with a five-minute screening or a symptom checklist alone. That is one reason our initial neurological evaluation at Delta Neuro Health lasts approximately three hours. We want enough time to listen to the patient, examine multiple parts of the nervous system, look for patterns, and collect objective information that we can return to later.
One of the tools we use as part of that process is Cleveland Clinic’s C3 Logix platform.
C3 Logix is best known for concussion assessment and management. It allows us to evaluate several areas that can be affected by a concussion, including symptoms, balance, reaction time, information processing, sequencing, coordination, and aspects of vision and cognitive performance. Just as importantly, it gives us a consistent way to repeat portions of the testing and compare results over time.
It is not the entire evaluation, and it does not make a diagnosis by itself. It is one part of a much larger clinical picture. But it gives us information that a conversation alone cannot.
Symptoms Matter, but They Do Not Tell Us Everything
We always take a patient’s symptoms seriously. If someone tells us that they feel dizzy, mentally slow, unsteady, forgetful, or exhausted, that information matters.
The challenge is that symptoms are subjective by nature. Two people can use the words “brain fog” and mean very different things. One person may be struggling to sustain attention. Another may process information more slowly. Someone else may be able to think clearly while seated but decline noticeably after standing, walking, or completing a mentally demanding task.
Symptoms can also change from day to day based on sleep, stress, pain, hydration, exertion, medication, or the demands placed on the nervous system.
C3 Logix helps us put measurable performance data alongside the patient’s experience. Instead of only asking whether someone feels slower, we may be able to observe changes in reaction time, processing, sequencing, balance, or symptom burden. That does not make the patient’s report less important. It helps us understand it more clearly.
Why We Like C3 Logix for Pre-Concussion Baseline Testing
One of the most useful times to evaluate neurological function is before an injury ever occurs.
A pre-concussion baseline gives us a snapshot of how an individual performs when healthy. If that person later sustains a concussion, we are not limited to comparing them with a broad population average. We can also compare their post-injury performance with their own earlier results.
That distinction can be important because “normal” is not identical for everyone. A person may score within a general reference range after an injury but still be meaningfully below their personal baseline. On the other hand, a result that appears below average may simply reflect how that individual normally performs.
Baseline testing can be particularly valuable for athletes or anyone participating in activities with a meaningful risk of head injury. It gives us a reference point for later clinical decisions rather than requiring us to reconstruct someone’s pre-injury function after the fact.
Why We Use It After a Concussion
Concussion can affect much more than whether a person has a headache. It may influence attention, memory, reaction time, processing speed, balance, vision, coordination, sleep, mood, and tolerance for physical or cognitive activity.
That is why concussion evaluation should be multidimensional. The CDC notes that cognitive testing may help identify problems with learning, memory, concentration, and problem-solving, while also making clear that a concussion can still be present even when a particular test does not show an abnormality. In other words, no single score can rule a concussion in or out.
We use C3 Logix after a concussion because it helps us:
- Document the patient’s initial symptom burden and areas of impaired performance.
- Compare post-injury findings with a pre-injury baseline when one is available.
- Use normative information when a personal baseline is not available.
- Repeat testing to monitor trends during recovery.
- Identify areas that may deserve a closer look during the rest of the neurological examination.
- Place the patient’s subjective improvement alongside objective performance data.
This last point is especially important. Feeling better is meaningful, but symptom reduction and neurological recovery do not always move at exactly the same pace. A patient may report fewer headaches while still showing difficulty with balance or cognitive performance. Another patient may continue to feel symptomatic even while certain objective measures are improving.
Neither finding tells the whole story. Together, they provide a more useful picture.
C3 Logix Is One Piece of Our Three-Hour Evaluation
We do not put a patient through three hours of testing simply to produce a collection of scores. We use that time to understand how different systems are working together.
Depending on the patient and the reason for the visit, the broader evaluation may include a detailed history, neurological examination, eye-movement and vestibular testing, balance and gait assessment, coordination testing, autonomic evaluation, cognitive measures, and other procedures selected for that individual.
C3 Logix complements those findings. It does not replace them.
For example, a slower cognitive score tells us that performance was reduced during that task. It does not automatically tell us why. The reason could involve the effects of a concussion, poor sleep, pain, migraine, visual strain, autonomic dysfunction, medication, anxiety, fatigue, or another factor. Our job is to interpret that result in the context of the history and the rest of the examination.
That is where the length and depth of the evaluation matter. A number without context can be misleading. A pattern across several tests can be much more informative.
Why We May Use It Beyond Concussion
Although C3 Logix was developed primarily for concussion care, the functions it measures are not exclusive to concussion.
Balance, attention, reaction time, information processing, sequencing, and symptom tolerance can be affected in many neurological and systemic conditions. We therefore may use selected C3 Logix measures to establish a functional baseline or monitor change in patients who have not sustained a recent head injury.
POTS and Dysautonomia
Patients with POTS or other forms of dysautonomia often describe brain fog, mental fatigue, lightheadedness, difficulty concentrating, and reduced tolerance for upright activity. C3 Logix does not diagnose POTS, and it does not replace appropriate autonomic testing.
What it can do is help us document how the patient is functioning cognitively and physically at a given point in time. When interpreted alongside heart rate, blood pressure, orthostatic findings, symptoms, and the rest of the neurological examination, that information may help us better understand the patient’s functional limitations and monitor changes during care.
Memory and Cognitive Complaints
“My memory is getting worse” is an important concern, but memory complaints can arise for many reasons. Sometimes the primary issue is memory storage or recall. In other cases, a person never efficiently processed or attended to the information in the first place, making it difficult to remember later.
Selected cognitive tasks can help us identify where performance appears to be breaking down and whether that pattern changes over time. C3 Logix is not a substitute for comprehensive neuropsychological testing, dementia evaluation, laboratory work, or imaging when those are indicated. It can, however, provide useful screening and tracking information within a broader neurological assessment.
Focus, Attention, and Brain Fog
Difficulty focusing is not always a lack of effort or motivation. A person may struggle because visual information is unstable, processing is slow, mental endurance is limited, the autonomic nervous system is poorly regulated, or the brain is spending too many resources trying to maintain balance and orientation.
Objective testing gives us a better starting point than simply telling someone to try harder. It may show that the patient performs well at first but fades with repetition, that speed comes at the expense of accuracy, or that certain types of tasks are more difficult than others.
Those patterns can help guide the rest of our examination and, when appropriate, influence how we structure rehabilitation.
Vestibular, Migraine, and Other Neurological Cases
Patients with vestibular disorders, migraine, neurological injury, or chronic dizziness may also experience changes in balance, visual tolerance, reaction time, and cognition. In these cases, C3 Logix can provide another objective reference point.
Again, the goal is not to use the platform to assign a diagnosis it was not designed to make. The goal is to measure relevant functions, compare them with the rest of the examination, and determine whether those functions change over time.
Why Repeat Testing Matters
Patients deserve more than “I think you look better.” They should be able to see what has changed, what still needs work, and how those findings relate to what they are experiencing in daily life.
Repeating the same or comparable measures can help us answer several practical questions:
- Is reaction time improving?
- Is balance becoming more stable?
- Is cognitive performance more consistent?
- Can the patient complete a task with fewer symptoms?
- Are subjective improvements supported by measurable change?
- Has one area improved while another continues to lag behind?
Not every small difference is clinically meaningful, and testing can be influenced by fatigue, sleep, pain, practice effects, and effort. That is why we do not chase individual numbers. We look for patterns, meaningful changes, and agreement between the testing, the examination, and the patient’s real-world function.
The Tool Does Not Replace Clinical Judgment
We use technology because it can make parts of neurological function easier to measure. We do not use it to replace the clinician or reduce a person to a score.
C3 Logix is not a stand-alone diagnostic test for concussion, POTS, ADHD, dementia, or any other condition. An abnormal result does not automatically identify the cause, and a normal result does not mean that a patient’s symptoms are not real.
Its value comes from how it is used: as one objective component of a careful, individualized evaluation.
That is ultimately why it belongs in our three-hour examination. It helps us move beyond vague descriptions without pretending that one test has every answer. It gives us data we can compare over time, helps us identify questions that deserve further investigation, and allows us to better connect what a patient feels with how their nervous system is performing.
The purpose is not to collect more data for the sake of it. The purpose is to make better clinical decisions for the individual sitting in front of us.
Considering a Neurological Evaluation?
If you are dealing with persistent concussion symptoms, dizziness, POTS-related brain fog, memory changes, cognitive difficulties, or problems with focus, a comprehensive evaluation may help clarify which systems are contributing to those symptoms.
At Delta Neuro Health in Columbus, Ohio, our in-depth neurological evaluation combines objective technology with a detailed, individualized clinical examination. C3 Logix is one of the tools we may use to establish a baseline, identify functional patterns, and track meaningful change over time.
This article is for educational purposes only and does not provide a diagnosis or replace individualized medical care. Testing is selected according to each patient’s history, presentation, and clinical needs.
References
- Cleveland Clinic: Concussion Testing and C3 Logix
- CDC: About Mild TBI and Concussion
- Simon et al.: Reliability and Concurrent Validity of Select C3 Logix Test Components
- Masterson et al.: Construct Validity of Neuropsychological Tests Within C3 Logix
