Processing of attentional and emotional stimuli depends on retrospective response of foot pressure: Conceptualizing neuron-cognitive distribution in human brain.

Cognitive function of human brain requires temporal execution of emotional or attentional tasks, or their inter-dependence influences. Smooth execution of such tasks requires spontaneous distribution of cognitive load at specific regions of brain based on its classification. A strong connectivity between peripheral sensors and central nervous system is thought to assist the cognitive load distribution effectively. Novelty of current study evaluates the modulation of foot pressure and its mapping with distributed cognitive load while executing attentional biased emotional tasks. Emotional stimulus in form of happy and sad faces with attentional paradigm drawn on them were used in the study. Behavioral results were measured with respect to the analysis of response time (RT) and response accuracy (%). Neurological signals were acquired using 10-channel EEG data acquisition system, whereas, another 6 channels were used to measure foot pressure in the left and right feet at three different locations of foot. Acquired signals were further analyzed in time and frequency domains to interpret the cognitive load distribution, and the influence of foot pressure on distribution of cognitive loads. We found that the foot pressure accelerated the response accuracy rate in attending the local scope of attention, which was not in the case of global scope of attention. This means that the global attention does not require any pressure from peripheral sensory neurons. Our event related potential (ERP) results revealed that the early sensory negative N100 characterized the processing of global scope of attention coupled with high-foot pressure. However, the late positive peak of P300 and P600 associated with local scope of attention along with high-foot pressure. The global scope of attention with low-foot pressure modulates delta and theta oscillations. These results largely contribute to the literature on cognitive neuroscience of attention and it corelation with the peripheral sensory foot pressure.

Neurocognitive functions of prosocial and unsocial incongruency information during language comprehension: evidence from time-frequency analysis of EEG signals.

This study examined neurocognitive mechanisms of prosocial and antisocial congruency in English sentences by conducting an electroencephalography experiment. Participants performed a judgment task whether prosocial and unsocial/antisocial nominal words were congruent or incongruent with the upcoming prosocial and antisocial verbal category of words in sentences (e.g., he established a friendship with others because he wanted to terrorize people). We found that the antisocial sentences were processed in the early P1, whereas prosocial sentences were processed in late P3. The negative deflection of N400 was higher for incongruent than congruent trials in the temporal regions of the brain. Further, the early suppression of antisocial sentences increased the brain oscillation of delta, theta, and beta-band activities in the temporal and frontal regions of the brain. The power spectrum density (PSD) of theta-band frequency was higher for incongruent than congruent trials in the parietal regions of the brain. These results suggest that the antisocial content of language is recognized very rapidly, and the time-course of processing underlies the congruent and incongruent sentences between prosocial and unsocial words in sentences. The current investigation contributes to the recognition of neural signatures of prosocial language that plays a significant role in developing the survival strategies, interpersonal communications, and wellbeing of humans.