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The effect of selective attention on the gamma-band auditory steady-state response.
Neurosci Lett. 2007 Jun 15; 420(3):223-8.NL

Abstract

Studies have demonstrated that selective attention can modulate the steady-state evoked potential to repetitive visual and tactile stimulation. However, examinations of the effect of attention on the auditory steady-state response (ASSR) have proven equivocal. The current experiment therefore utilized EEG to examine the effect of attention on the ASSR in healthy humans (n=15). Auditory click trains in the beta (20 Hz) and gamma (40 Hz) ranges were randomly presented binaurally in an oddball discrimination paradigm (each frequency served as the oddball (target) in each of two blocks). A Fast Fourier Transform was used to assess the effect of attention on the ASSR (signal power), and phase consistency across trials was assessed using the phase-locking factor (PLF). As expected, both 20 and 40 Hz targets elicited a robust P300 response, with maximal amplitudes over parietal regions. For the ASSR, it was found that EEG signal power was larger to 40 Hz targets compared to 40 Hz frequent stimuli across all frontocentral electrodes. No differences in signal power were observed during 20 Hz stimulation. Finally, increased PLF values were observed for 40 Hz targets compared to frequent trials. These results provide evidence that selective attention can enhance signal power and phase-locking of the ASSR, particularly to auditory stimulation in the gamma range.

Authors+Show Affiliations

Indiana University, Department of Psychological and Brain Sciences, 1101 E. 10th St., Bloomington, IN 47405, USA. pskosnik@indiana.eduNo affiliation info availableNo affiliation info available

Pub Type(s)

Journal Article
Research Support, N.I.H., Extramural
Research Support, Non-U.S. Gov't

Language

eng

PubMed ID

17556098

Citation

Skosnik, Patrick D., et al. "The Effect of Selective Attention On the Gamma-band Auditory Steady-state Response." Neuroscience Letters, vol. 420, no. 3, 2007, pp. 223-8.
Skosnik PD, Krishnan GP, O'Donnell BF. The effect of selective attention on the gamma-band auditory steady-state response. Neurosci Lett. 2007;420(3):223-8.
Skosnik, P. D., Krishnan, G. P., & O'Donnell, B. F. (2007). The effect of selective attention on the gamma-band auditory steady-state response. Neuroscience Letters, 420(3), 223-8.
Skosnik PD, Krishnan GP, O'Donnell BF. The Effect of Selective Attention On the Gamma-band Auditory Steady-state Response. Neurosci Lett. 2007 Jun 15;420(3):223-8. PubMed PMID: 17556098.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - The effect of selective attention on the gamma-band auditory steady-state response. AU - Skosnik,Patrick D, AU - Krishnan,Giri P, AU - O'Donnell,Brian F, Y1 - 2007/05/10/ PY - 2006/06/20/received PY - 2007/04/17/revised PY - 2007/04/18/accepted PY - 2007/6/9/pubmed PY - 2007/9/27/medline PY - 2007/6/9/entrez SP - 223 EP - 8 JF - Neuroscience letters JO - Neurosci Lett VL - 420 IS - 3 N2 - Studies have demonstrated that selective attention can modulate the steady-state evoked potential to repetitive visual and tactile stimulation. However, examinations of the effect of attention on the auditory steady-state response (ASSR) have proven equivocal. The current experiment therefore utilized EEG to examine the effect of attention on the ASSR in healthy humans (n=15). Auditory click trains in the beta (20 Hz) and gamma (40 Hz) ranges were randomly presented binaurally in an oddball discrimination paradigm (each frequency served as the oddball (target) in each of two blocks). A Fast Fourier Transform was used to assess the effect of attention on the ASSR (signal power), and phase consistency across trials was assessed using the phase-locking factor (PLF). As expected, both 20 and 40 Hz targets elicited a robust P300 response, with maximal amplitudes over parietal regions. For the ASSR, it was found that EEG signal power was larger to 40 Hz targets compared to 40 Hz frequent stimuli across all frontocentral electrodes. No differences in signal power were observed during 20 Hz stimulation. Finally, increased PLF values were observed for 40 Hz targets compared to frequent trials. These results provide evidence that selective attention can enhance signal power and phase-locking of the ASSR, particularly to auditory stimulation in the gamma range. SN - 0304-3940 UR - https://www.unboundmedicine.com/medline/citation/17556098/The_effect_of_selective_attention_on_the_gamma_band_auditory_steady_state_response_ L2 - https://linkinghub.elsevier.com/retrieve/pii/S0304-3940(07)00481-8 DB - PRIME DP - Unbound Medicine ER -