J T Zimmerman | Search PubMed

PubMed1978

Human magnetic auditory evoked fields.

Magnetoencephalographic (MEG) averaged auditory evoked fields to click stimuli (N = 512) were recorded from four human subjects. The MEG was recorded with an asymmetric second derivative SQUID gradiometer located in an aluminum shielded room. Unlike conventional EEG auditory evoked potentials, which have a widespread distribution, evoked magnetic fields appear to be localized to the general area of the primary auditory cortex and diminish rapidly in amplitude as the gradiometer is moved away in any direction.

Acoustic Stimulation↗

PubMed1978

Spatially rearranged vision and REM sleep: a lack of effect.

An observation first made in our laboratory was responsible for focusing our attention upon an apparent increase in REM sleep in relation to altered visual experiences during the day. This finding was consistent with certain information-processing theories of REM sleep function and seemed to offer experimental support for them. Therefore, we proceeded to conduct a series of closely related experiments, designed to investigate further the possible REM-augmenting effects of spatially rearranged vision. Although our first two experiments seemed to support the original observation, subsequent, more carefully designed experiments, did not. The combined results from all of our experiments forced us to conclude that there is no consistent effect of distorted daytime vision on the amount or percentage of REM sleep. REM latency, or the number of rapid eye movements during REM periods. We suggest that future research on the topic employ experiments specifically designed to explore relationships between personality variables and a subject's REM sleep response to altered sensory input.

Adult↗