Working Memory and Long-Term Memory Use Different Systems Working memory is active processing in the prefrontal cortex. Working memory holds information actively in mind for current use: remembering a phone number while dialing, tracking sentence structure while reading, holding multiple ideas in conversation. This requires constant neural activity in the prefrontal cortex and connected regions. Concussion directly impairs this system through reduced energy availability and disrupted neural networks (Patricios et al., 2023). Long-term memory is storage in the hippocampus and cortex. Long-term memory involves consolidated information stored across multiple brain regions. The hippocampus initially encodes new memories before they consolidate into cortical storage. Both regions are typically less affected by concussion than the prefrontal cortex. Stored memories remain accessible because the storage is not damaged. The two systems can dissociate after injury. Patients with concussion frequently demonstrate intact recall of memories from years ago combined with severe impairment of new working memory tasks. The contrast confuses patients and family members who expect memory impairment to affect all memories equally. The pattern is neurologically consistent with the different anatomical and energy requirements. What Working Memory Impairment Looks Like Forgetting why you walked into a room. Working memory holds the intention from one room to the next. With reduced capacity, the intention drops out of working memory during the walk. The intention still exists in long-term memory if prompted but is no longer actively held. Losing track of conversation threads. Following conversation requires holding what was said in working memory while processing what is being said. Reduced capacity means earlier conversation content drops out as new content arrives. You hear the words but lose the thread. Inability to hold instructions in mind. "Pick up milk, eggs, and bread" exceeds working memory capacity after concussion. By the third item, the first has dropped out. Patients often need to write down what previously fit comfortably in mind. Mathematical operations become difficult. Mental math requires holding numbers in working memory while performing operations. Reduced capacity makes the holding fail mid-operation. Calculations that were automatic become impossible without writing them down. Reading comprehension drops despite intact reading mechanics. Reading requires holding sentence beginning while processing the end. Reduced working memory breaks comprehension even when reading speed appears normal. What Stays Intact Childhood memories remain accessible. Memories from decades ago can usually be recalled normally. The consolidated storage was completed before the injury. Long-term knowledge stays available. Information learned through education or experience remains accessible. Vocabulary, factual knowledge, learned skills, and procedural memories typically remain intact. Familiar routes and locations. Navigation in familiar environments works through consolidated spatial memory. Driving familiar routes typically remains possible (though attention and processing speed limit driving in new environments). Recognition memory. Recognizing faces, places, and objects you knew before injury typically remains intact. The recognition uses pattern matching against stored representations. Mobility Support for Memory Function JME 155 Diaphragmatic breathing supports the autonomic regulation that working memory depends on. The prefrontal cortex requires substantial energy and is sensitive to autonomic state. Sympathetic activation reduces working memory function. Regular breathing practice supports the parasympathetic state that working memory needs. 10 breaths every 60-90 minutes, with longer sessions before any demanding cognitive task. JME 14 Chin tucks address the cervicogenic symptoms that compound cognitive impairment. Headache and brain fog reduce the cognitive capacity available for working memory tasks. Reducing the cervical contribution preserves capacity for cognition. 10 repetitions with 5-second holds. JME 1 Cervical rotation maintains the proprioceptive function that supports cognitive processing. The sensory integration that proprioception provides is part of the cognitive foundation. 10 repetitions each direction. JME 150 Thoracic rotation supports the deep breathing essential for cerebral blood flow and cognitive function. Adequate oxygen delivery is necessary for working memory function. 8 repetitions per direction. Start your 3-day free trial for cognitive-support mobility programming. External Memory Supports During Recovery Write everything down immediately. The brain that was supposed to hold the information cannot. Notes, lists, and calendars become essential. The shift from internal to external memory is appropriate during recovery, not a sign of decline. Use phone apps for working memory tasks. Reminders, notes, calendar, voice memos. The phone serves as external working memory. The cognitive cost of using the phone is far less than trying to hold information internally. Ask people to wait while you write things down. "Hold on, I need to write that down" is appropriate during recovery. The few seconds preserves the information that working memory cannot hold. Most people accommodate willingly when they understand the need. Use checklists for multi-step tasks. Cooking, work projects, daily routines all benefit from written checklists. The checklist provides the working memory the brain cannot. Removes the cognitive load that previously felt automatic. Reduce decision-making demands. Each decision uses working memory. Reducing decisions (predictable routines, prepared meals, simplified wardrobe) preserves working memory for tasks where it is needed. Daily Movement Routine JME 3 Lateral cervical flexion daily addresses tension that compounds cognitive symptoms. Reducing physical symptoms preserves cognitive capacity. 8 repetitions per side with 15-second holds. JME 42 Shoulder circles release the postural tension that cognitive concentration produces. Sustained mental effort produces shoulder tension that contributes to headache. 10 repetitions each direction. JME 15 Cervical extension supports cerebral blood flow that cognitive function requires. Daily extension contributes to the optimal conditions for cognitive recovery. 8 repetitions. JME 151 Lateral side bends with breathing combine mobility and parasympathetic activation in one exercise. Use between cognitive tasks for autonomic recovery. 8 repetitions per side. Support cognitive recovery with simplmobility's mobility programming. Rebuilding Working Memory Cognitive rehabilitation provides targeted exercises. Speech-language pathologists and occupational therapists trained in cognitive rehabilitation provide working memory exercises. The exercises rebuild capacity through graduated demand. Request referral if working memory symptoms persist beyond 6-8 weeks. Sub-symptom aerobic exercise supports cognitive recovery. The Buffalo Concussion Treadmill Test protocol supports brain function broadly, including working memory. The exercise produces BDNF (brain-derived neurotrophic factor) that supports neural recovery and plasticity. Sleep optimization is essential. Working memory consolidation and clearance happen during sleep. Disrupted sleep prevents the recovery. Sleep optimization protocols are essential for cognitive recovery. Graduated cognitive demand. Start with single-task cognitive work. Build to short multi-step tasks. Progress to longer complex tasks. The graduation builds capacity without producing crashes. Why can I remember my childhood but not what I had for breakfast? Childhood memories are stored in long-term memory, largely intact after concussion. This morning's breakfast required working memory and recent encoding, both impaired. The dissociation is neurologically consistent and not a sign of dementia or progressive cognitive decline. Should I get neuropsychological testing? If working memory symptoms persist beyond 3-4 months, neuropsychological testing identifies specific deficits and guides targeted treatment. The testing is comprehensive (typically 4-8 hours of testing across multiple cognitive domains) and provides a detailed profile of strengths and weaknesses. Will my working memory return to normal? For most patients, yes, with appropriate treatment. The recovery typically parallels other cognitive recovery. Some patients retain modest persistent working memory reduction that responds to compensatory strategies. The 4-12 week timeline for substantial improvement applies to most cases. References Patricios, J. S., et al. (2023). Consensus statement on concussion in sport: the 6th International Conference on Concussion in Sport, Amsterdam, October 2022. British Journal of Sports Medicine, 57(11), 695-711. PubMed Silverberg, N. D., et al. (2020). Management of concussion and mild traumatic brain injury: a synthesis of practice guidelines. Archives of Physical Medicine and Rehabilitation, 101(2), 382-393. PubMed