How to Resist the Strong Memory of the Old Cuttlefish

Do you remember what was your dinner last week? That ability is a function of episodic memory, and how well we can remember the time and place of specific events that often decline with age. Cuttlefish also exhibit a form of episodic memory, but unlike humans, their ability does not decrease as they age, according to a new role published in Royal Society Procedures B.

“Cuttlefish can remember what they ate, where, and when, and use it to guide their feeding decisions in the future,” said lead author Alexandra Schnell of the University of Cambridge, who trades in experiments at the Marine Biological Laboratory in Woods Hole, Massachusetts. “What’s surprising is that they don’t lose this ability with age, even if they show other signs of aging such as loss of muscle movement and appetite.”

Earlier this year, we reported in a study by Schnell and other colleagues showed that Cuttlefish may be delayed in satisfying. Specifically, they can pass on a cephalopod version of the famous Stanford marshmallow test: waiting less for their preferred victim than settling for a less preferred victim. Cuttlefish also performed better on a subsequent learning test-the first time a relationship between self-control and intelligence was found in a non-mammalian species.

In the experiments, the cuttlefish had to choose between two different prey items: They could choose to eat the raw king prawn immediately or delay satiety for the preferred live shrimp. The subject will see the same options for the duration of the test and can stop waiting at any point and eat the king prawn when it is tired of keeping the shrimp grass.

The team also subjected the cuttlefish to a learning task to assess mental performance. Cephalopods first learned to associate a visible symbol with a specific reward victim, and then the researchers reversed the situation so that the same reward was associated with a different symbol. They found that cuttlefish all expected better rewards and allowed delays of up to 50 to 130 seconds, comparable to brains with brains like chimpanzees, crows, and parrots.

This most recent study focuses on whether cuttlefish have some form of episodic memory-the ability to remember unique past events with context about what happened, where it happened, and when. -a it happened. People develop this ability by age 4, and our episodic memory decreases as we progress into old age. That is in contrast to semantic memory, our ability to recall total known knowledge without the context of space and time. Human semantic knowledge has been shown to remain relatively indefinite with aging.

The hippocampus region of the human brain plays an important role in episodic memory, and it is thought that its deterioration over time causes our memory to decline in the period as we age. For a long time, scientists thought that episodic memory was different from human because this difference in memory acquisition is attached to the cognitive experience of memory. People can express these aspects verbally; it is much more difficult to evaluate the possible experience with animal consciousness as unreliable (in human terms).

However, many animal species have been shown to exhibit such “episodic” memory abilities-the term scientists in this subfield used to “clearly recognize that we don’t take into account human traits. of speech and consciousness involved in knowing how to move one’s own time, ”as Schnell et al. wrote a note below. For example, a 1998 study found that jay birds can remember when and where they stored foraged food and what the food was. Behaviors that characterize the same as memory loss are also seen in magpie, good monkeys, seethe, ug zebrafish.

Evidence of episodic -like memory is also shown in cuttlefish. Cuttlefish lack a hippocampus, but they have a distinct structure and organization of the brain, complete with an upright lobe that demonstrates the similarity of the connection and function of the human hippocampus-that is, learning and memory. Past studies have shown that cuttlefish are adequately anticipated in the future and can optimize foraging habits and remember details of what, where, and when from past treatments-signs in the same memory as the episodic-adapting their strategy to respond to the change in the victim’s situation.

Source link


Leave a Reply

Your email address will not be published. Required fields are marked *