J Neurosci: How does the brain perceive time?

September 16, 2020 // --- On some days, we tend to feel the passage of time very quickly, and in others, we feel like we are living the same year.
is the reason for this? A recent article published in journal Neuroscience seems to reveal the answer: time-sensitive neurons are broken and distort our understanding of time.
neuron cells in the upper-back neuron (SMG) region are stimulated over a specific period of time.
neurons get tired if they are repeatedly stimulated for a fixed duration.
at this point, as other neurons continue to move normally, our subjective perception of time deviates.
(Photo: www.pixabay.com) Hayashi and Ivry used fMRI to measure brain activity when human participants were involved in time comparison tasks.
healthy adult participants watched the visual adapter (grey circle) for 30 consecutive times over a set time period.
after this adaptation period, they are shown the test stimulus and indicate its duration.
if the viewing duration is longer, participants underestimate the speed at which time passes, and if the adapter lasts a short duration, they overestimate the speed at which time passes.
, studies have shown that the degree of time-perceived bias is related to how much activity is reduced in SMG - greater fatigue leads to greater time distortion.
(bioon.com) Source: How the brain creates the experience of time Original source: Duration-Selectivity in Right Parietal Cortex Reflects the Core Experience of Time, JNeurosci (2020). DOI: 10.1523/JNEUROSCI.0078-20.2020.