Abstract <p>A combined behavioral and EEG experiment examined the effects of intramodal and crossmodal cueing on auditory spatial discrimination. On each trial, the participant fixated a neutral location and was presented with an auditory target (two broadband “buzzes” with a slight relative spatial offset) from one of two locations (central or lateral). The target was preceded by a cue varying in its validity (presented from the same or a different location than the target with a 50% probability) and modality (auditory or visual, in separate blocks). The participant’s task was to indicate the direction of the target shift, irrespective of the noninformative cue. Behavioral results showed that valid auditory cues improved discrimination sensitivity relative to invalid cues, while visual cue validity had no effect. Moreover, discrimination responses were biased away from the gaze direction for both cue modalities, with an additional bias away from the invalid auditory cues. EEG analysis identified neural correlates of the behavioral effects; specifically, both cue validity and modality modulated target-elicited auditory N1 and N2 components, while the more posteriorly distributed P3 correlated weakly with response biases. Finally, an auditory cue-evoked posterior contralateral positivity (ACOP) was consistent with a visual (eye-centered) rather than an auditory (head-centered) reference frame, suggesting that auditory signals are converted into a visual representation prior to directing bottom-up attention.</p> Open practices statement <p>The data supporting the findings of this study are openly available on Zenodo [10.5281/zenodo.17035882]. The repository includes trial-level behavioral data and raw EEG data associated with the present studies. The studies reported in this manuscript were not preregistered.</p>