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Unformatted text preview: are actually involved in
object perception (as opposed to just ﬁring)?
Removal or inactivation of the neurons results in a
perceptual deﬁcit It does; we wonʼt review the evidence.
Neural and psychophysical sensitivities can be
reconciled Little-understood. ? Artiﬁcial activation of the neurons shifts perception in a
At or near threshold, trial-by-trial ﬂuctuations in
behavior are correlated with trial-by-trial ﬂuctuations in
ﬁring rate Little-understood. elivered at 200 Hz (refs 19, 20). The stimulation pulses were
iphasic, with the cathodal pulse leading. Each pulse was 0.2 ms in
uration with 0.1 ms between the cathodal and anodal phase. Each
periment contained three microstimulation conditions differing in
e exact time of stimulation delivery as well as an un-stimulated
ntrol condition (Fig. 1b). Stimulating pulses were delivered for
ms in one of three time periods following onset of the visual
imulus: 0–50 ms, 50–100 ms or 100–150 ms. The ﬁrst period was Microstimulation in IT Task: Is it a face or not? gure 1 | Visual stimuli and eve...
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- Spring '12