Attention
Attention is the cognitive domain governing sustained focus, selective filtering of distraction, and working memory capacity to hold and manipulate information in real time. It is one of the earliest and most commonly disrupted domains after concussion, and it is assessed using brief performance tests such as Digit Span, Trail Making Test A, and the Stroop Test.
What the Attention Domain Covers
Attention is not a single unified process — clinically, it is useful to think of it in layers. Sustained attention is the ability to maintain focus on a task over time without lapsing. Selective attention is the ability to filter out irrelevant stimuli and stay locked onto a relevant target (the mechanism the Stroop Color and Word Test is built to stress). Divided attention is the ability to track more than one input or task simultaneously, and working memory — closely related and often assessed alongside attention — is the capacity to hold information active in mind and manipulate it, as in reciting digits backward.
In everyday functioning, attention deficits show up as difficulty following multi-step conversations, losing a train of thought mid-sentence, needing to re-read a paragraph multiple times, or feeling mentally "foggy" in noisy or visually busy environments. These are frequently the first symptoms patients report after a concussion and often the last to fully resolve, which is why attention is a high-value domain to track serially rather than assess once.
Why Attention Matters Clinically
Attention functions as a gateway domain: deficits here degrade performance on virtually every other cognitive task, because encoding new information into memory, planning a sequence of actions, and processing information quickly all depend on attentional resources being intact. A patient who scores poorly on a memory test may not have a primary memory deficit at all — they may have an attention deficit that prevented adequate encoding in the first place. This makes attention testing a useful triage step before over-interpreting downstream domain scores.
Attention deficits are also functionally consequential in ways patients notice immediately: driving safety, ability to return to classroom or desk work, and workplace safety in roles requiring sustained vigilance all hinge on this domain recovering. For clinicians managing return-to-play, return-to-learn, or return-to-work decisions, an unresolved attention deficit is frequently the rate-limiting factor even after physical symptoms have cleared.
Conditions Where Attention Is Commonly Affected
- Post-concussion syndrome — attention and processing speed complaints are among the most frequently reported cognitive symptoms in the weeks following mild TBI, and persistence beyond the expected recovery window is a key trigger for escalation to formal testing.
- PTSD after injury — chronic hyperarousal and intrusive symptoms disrupt sustained and selective attention independent of any concurrent brain injury, complicating attribution when the two co-occur.
- Chemotherapy-related cognitive change — attention and processing speed are commonly affected domains in treatment-related cognitive complaints, both during and after active treatment.
- Depression after specialty care — depression has a recognized direct effect on attention and executive control, which is one reason mood screening should run alongside any attention-domain workup.
- Chronic headache — attention complaints are reported by a meaningful share of chronic migraine patients, both during attacks and, to a lesser degree, between them.
- MCI of unclear cause — attention and processing speed changes can be an early, non-specific signal that prompts a broader workup for reversible contributors before assuming a neurodegenerative process.
How Attention Is Assessed
Several instruments in a typical battery are built specifically to isolate attentional function, each stressing a slightly different sub-process:
- Digit Span — forward span is a direct measure of attention capacity; backward and sequencing span layer in working memory manipulation.
- Trail Making Test A — visual scanning and sustained attention under time pressure, often paired with Part B to isolate the executive/set-shifting component.
- Stroop Color-Word Test — selective attention and inhibitory control under cognitive interference.
- SDMT — sustained attention and visual scanning speed in a brief, repeatable format well suited to serial monitoring.
- SAC — includes a concentration subtest (digits backward, months in reverse) as part of a rapid sideline/office cognitive screen.
None of these instruments has a single universal pass/fail cutoff. Performance is interpreted against age- and education-normed reference data, and for sideline tools like the SAC, comparison to the individual's own preseason baseline is far more informative than any population-wide threshold. A single score in isolation should not be read as evidence of impairment — trend across serial administrations, in the context of the patient's baseline and reported symptoms, is what supports clinical decision-making.
Where Attention Fits in the Module Structure
Attention-domain data most commonly rolls up into the Concussion module, where it is one of the earliest markers tracked between visits, and frequently intersects with the Mental Health module when comorbid anxiety, PTSD, or depression is contributing to the attentional burden. For patients with headache-predominant presentations, attention tracking also connects to the Headache module.
How Kavera Handles This
Attention is the domain concussion hits first and the one brain training in Kavera targets. Digit Span, Trail Making A, Stroop and SDMT run between visits on your cadence and plot against baseline, next to the training the patient completed. Self-Serve practices run this with their own staff. On Managed, our team runs it and bills it under your credentials.