Preliminary Study On Feature Of Auditon Automatic Processing In Visual Emotional Context Of The Patients With Frontal Lobe Injury

Purpose:In this study,the characteristics of neural oscillations of energy amplitude in each frequency band were analyzed by studying the auditory automatic processing experiments in patients with frontal lobe injury under different emotional context.The characteristics of EEG changes in patients with frontal lobe injury caused by emotion were studied through event-related oscillation technology,in order to provide feasible neuroelectrophysiological technical methods and objective electrophysiological indicators for the assessment of frontal lobe injury in forensic clinical forensics.Methods:The time-frequency method was used to analyze the event-related oscillations of the cross-channel auditory oddball test in 24 healthy subjects,12 patients with left frontal lobe injury,and 12 patients with bilateral frontal lobe injury in the context of positive and neutral visual emotions.The visual stimuli used comedy and neutral videos,and the auditory stimuli used experimental paradigms of standard stimuli,deviation stimuli and novel stimuli.Results:1.There was no significant difference in the statistical analysis of the emotional scale between the healthy control group,patients with unilateral frontal lobe injury,and patients with bilateral frontal lobe injury.2.The mental and psychological measurement results of the healthy control group,patients with unilateral frontal lobe injury,and patients with bilateral frontal lobe injury showed that the intelligence test results of the healthy people were significantly better than those of the two groups of patients with frontal lobe injury.3.Under the positive and neutral emotional background,there was no significant difference in the total,induced and phase energy of standard,deviation,novel stimulus of Delta,Beta,and Gamma frequency bands among the three groups.4.Under the background of positive emotions,the theta-band energy induced by novel stimuli in the healthy control group has significant differences between groups.The theta energy(including total and induced energy)in the healthy control group was significantly lower than that in the unilateral frontal lobe injury group and the bilateral frontal lobe injury group,and the theta energy in the frontal lobe injury group was abnormally increased.The total energy and induced energy of theta band in the frontal central area were higher than those in the frontal and central areas.5.Under the background of positive emotions,the alpha-band energy induced by novel stimuli was significantly different between groups,and the phase energy of the alpha-band in the healthy control group was significantly greater than that in the two frontal lobe injury groups.6.In the healthy control group and the unilateral frontal lobe damage group,the theta-band energy was significantly different between comedy and neutral emotions:the theta band energy evoked by comedy emotion was higher than that of neutral emotion,the theta energy in the left hemisphere of the two groups had no significant difference between different emotions,while the theta band energy in the right hemisphere was higher than that of neutral emotion.In the bilateral frontal lobe damage group,there was no significant difference between the two emotions.Conclusion:Frontal lobe damage not only affects the patient’s mental,psychological and behavioral changes,but also affects the brain processing of visual and auditory information.Patients with frontal lobe injury and healthy people elicit different partial energy in theta and alpha bands when faced with emotional stimuli.People are more sensitive to positive emotional stimuli than neutral emotional stimuli.These event-related oscillatory characteristics reveal the connection between frontal lobe damage and energy oscillatory activity in each frequency band,and also provide a feasible direction for the two-level assessment of frontal lobe damage to a certain extent.