Table 2.

Attention-based categorization of postconcussive symptoms

Primary symptoms related to predictive timing deficit	Secondary symptoms related to PFC compensation and error signaling
• Decreased concentration	• Headache
• Memory difficulties	• Fatigue
• Decreased processing speed	• Sleep disturbances
• Decreased awareness	• Irritability
• Balance and coordination problems	• Depression• Anxiety
• Blurred vision
• Dizziness
• Tinnitus
• Hypersensitivity to light or noise

Adapted from Ghajar and Ivry.⁷⁶