ArticleScientific reports2022
Cerebral cortical processing time is elongated in human brain evolution.
Article in Scientific reports, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 10 papers.
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10 citing papers in PubMed.
- Modeling Emotional Arousal With Turbulence Measured by EEG.Psychophysiology · 2025Article
- If you please, draw me a neuron - linking evolutionary tinkering with human neuron evolution.Current opinion in genetics & development · 2024Review
- Segmentation window of speech information processing in the human auditory cortex.Scientific reports · 2024Article
- Human-specific genetic modifiers of cortical architecture and function.Current opinion in genetics & development · 2024Review
- Modeling saccade reaction time in marmosets: the contribution of earlier visual response and variable inhibition.Frontiers in systems neuroscience · 2024Article
- Non-invasive scalp recording of electroencephalograms and evoked potentials in unanesthetized horses using a 12-channel active electrode array.Frontiers in veterinary science · 2024Article
- Inaccessible time to visual awareness during attentional blinks in macaques and humans.iScience · 2023Article
- The Luminescence Hypothesis of Olfaction.Sensors (Basel, Switzerland) · 2023Article
- Decoding violated sensory expectations from the auditory cortex of anaesthetised mice: Hierarchical recurrent neural network depicts separate 'danger' and 'safety' units.The European journal of neuroscience · 2022Article
- Comparison of non-invasive, scalp-recorded auditory steady-state responses in humans, rhesus monkeys, and common marmosets.Scientific reports · 2022Article
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Authors and funding
7 authors.
Funding
Abstract
An increase in number of neurons is presumed to underlie the enhancement of cognitive abilities in brain evolution. The evolution of human cognition is then expected to have accompanied a prolongation of net neural-processing time due to the accumulation of processing time of individual neurons over an expanded number of neurons. Here, we confirmed this prediction and quantified the amount of prolongation in vivo, using noninvasive measurements of brain responses to sounds in unanesthetized human and nonhuman primates. Latencies of the N1 component of auditory-evoked potentials recorded from the scalp were approximately 40, 50, 60, and 100 ms for the common marmoset, rhesus monkey, chimpanzee, and human, respectively. Importantly, the prominent increase in human N1 latency could not be explained by the physical lengthening of the auditory pathway, and therefore reflected an extended dwell time for auditory cortical processing. A longer time window for auditory cortical processing is advantageous for analyzing time-varying acoustic stimuli, such as those important for speech perception. A novel hypothesis concerning human brain evolution then emerges: the increase in cortical neuronal number widened the timescale of sensory cortical processing, the benefits of which outweighed the disadvantage of slow cognition and reaction.
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