The phrase "a right button press" is correct and usable in written English.
It can be used when referring to the action of pressing a button on the right side of a device or interface.
Example: "To navigate to the next screen, make sure to perform a right button press on the remote control."
Alternatives: "a right-side button press" or "pressing the right button".
For the first four or final four consecutive blocks of the experiment, they were to make a left button-press response ("A") if the numbers were the same and a right button-press response ("L") if the numbers were different.
For the other four consecutive blocks, participants made a right button-press response ("L") if the numbers were the same and a left button-press response ("A") if the numbers were different.
They had to respond with a left or right button press indicating the spatial location of the target.
The stimulus consists of a four-digit millisecond counter that appears in the light-emitting diode (LED) dot-matrix display, and the response consists of a left or right button press, depending on the configuration.
During the course of the experiment, the left button press was always used to indicate "yes" as an answer to the question cue and the right button press always signaled a "no" response.
Given that participants were performing a decision task, a key question, however, is whether these patterns of activity comprise neural representations of the currently viewed scene (i.e., scene A), or instead retrieved motor actions (e.g., right button press).
In this study, prior to scanning, participants learnt which action was rewarded (e.g., right button press) in relation to a given scene (e.g., A), receiving monetary feedback for appropriate responses.
Given that hippocampal activity patterns under these conditions cannot be purely stimulus-driven, we asked whether they might instead reflect categorical decisions (e.g., that the stimulus looks "A-like") or retrieved motor actions (e.g., right button press).
As they repeated the PC or SC task twice, in one session the right button press was required, and in another session the left press was assigned.
Precues were immediately followed by one of three response cues represented by a black semicircle filled in white appearing within the line drawn circle: left half (left button press), right half (right button press), or bottom half circle (no response).
