Research reveals mind mechanism which will contribute to the notion of low-contrast acquainted objects

The looks of objects can usually change. For instance, in dim evenings or fog, the distinction of the objects decreases, making it tough to tell apart them. Nevertheless, after repeatedly encountering particular objects, the mind can establish them even when they change into vague. The precise mechanism contributing to the notion of low-contrast acquainted objects stays unknown.

Within the main visible cortex (V1), the world of the cerebral cortex devoted to processing fundamental visible data, the visible responses have been thought of to mirror straight the energy of exterior inputs. Thus, high-contrast visible stimuli elicit robust responses and vice versa.

On this research, Rie Kimura and Yumiko Yoshimura discovered that in rats, the variety of V1 neurons preferentially responding to low-contrast stimuli will increase after repeated experiences. In these neurons, low-contrast visible stimuli elicit stronger responses, and high-contrast stimuli elicit weaker responses. These low distinction–preferring neurons present a extra evident exercise when rats accurately understand a low-contrast acquainted object. It was first reported in Science Advances that low-contrast desire in V1 is strengthened in an experience-dependent method to symbolize low-contrast visible data effectively. This mechanism might contribute to the notion of acquainted objects, even when they’re vague.

This versatile data illustration might allow a constant notion of acquainted objects with any distinction. The flexibleness of our mind makes our sensation efficient, though you is probably not conscious of it. A man-made neural community mannequin might reproduce the human sensation by incorporating not solely excessive distinction–preferring neurons, usually thought of till now, but additionally low distinction–preferring neurons, the principle focus of this analysis.”

Rie Kimura, Researcher


Nationwide Institute for Physiological Sciences

Journal reference:

Kimura, R & Yoshimura, Y., (2021) The contribution of low contrast-preferring neurons to data illustration within the main visible cortex after studying. Science Advances.

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