fNIRS Recording of Prefrontal Cortex during Turkish Relative Clause Processing

The hemodynamic activity of fourteen subjects was collected via a 22-channel fNIRS system with a sampling rate of 7.8125 Hz while the subjects were performing a relative clause processing task in Turkish. The total stimuli consisted of 24 sentence-and-question pairs. Half of the sentences contained a subject-relative clause, while the other half contained an object-relative clause. The sentences were shown on a screen for 4 seconds, followed by the presentation of a Yes/No question about the sentence for 3 seconds, during which the subjects must respond via key press. The experiment was prepared in Pychopy 3.0.6 and key responses were also collected via Psychopy There was a random inter-stimulus interval within the range of 7-10 seconds. The fNIRS data provided were not preprocessed. The original output of the recording system was '.nirs', but the data were converted, without any preprocessing, into '.SNIRF', which is currently suggested as the standard data format by the fNIRS society. The recording (i.e., raw data) of one subject (Subject #6) was damaged, therefore excluded from the dataset. Furthermore, we provided one '.xlsx' file for each of the following data: response accuracy, reaction time, stimuli condition, and event timestamps. Further explanation of each file can be found In README files.