A growing body of peer-reviewed research is building the case that single-celled organisms, creatures with no brain, no neurons, and no nervous system at all, can exhibit habituation, one of the ...

A giant, single-celled organism with no brain, neurons, or nervous system has demonstrated an advanced form of learning previously thought impossible for a solitary cell. The organism is Stentor ...

Scientists at Nagoya University in Japan have identified the genes that allow an organism to switch between living as single cells and forming multicellular structures. This ability to alternate ...