The relationship between type 2 theta and behavior

Motivation, emotion, and their inhibitory control mirrored in brain oscillations

“…Existing evidence confirms a link between theta activity and emotional states both in animals and humans. Thus, Type 2 theta can be elicited in the guinea pig by such emotionally charged stimuli as the presence of owl sounds, female conspecifics, and snakes (Sainsbury and Montoya, 1984). It is argued, however, that these stimuli did not solely account for the production of Type 2 theta.…”

On the Neural Correlates of Object Recognition Awareness: Relationship to Computational Activities and Activities Mediating Perceptual Awareness

“…Type 1 theta has a higher overall frequency and occurs during voluntary movements. Type 2 theta has a lower frequency and occurs during immobility, specifically in response to sensory stimuli such as the presentation of predators (Sainsbury & Montoya, 1984). However, the same cells that respond with type 2 theta oscillations to sensory stimuli also generate type 1 theta during movement, and the oscillations are more regular during movement than during sensory stimulation (Sinclair, Seto, & Bland, 1982;Bland, Seto, Sinclair, & Fraser, 1984).…”

“…Synchronized oscillatory activities in the theta and gamma frequency bands are ubiquitous in the hippocampal formation (Bland & Whishaw, 1976;Chrobak & Buzsáki, 1998;Penttonen, Kamondi, Acsády, & Buzsáki, 1998). Two types of theta oscillations have been described (Sainsbury & Montoya, 1984;Sainsbury, Heynen, & Montoya, 1987). Type 1 theta has a higher overall frequency and occurs during voluntary movements.…”

EEG Bands During Wakefulness, Slow-Wave and Paradoxical Sleep as a Result Of Principal Component Analysis in Man

“…31,32 These conditions are opposed to physiological states in which theta appears in rodents. 28,29,35,36 Power spectrum from PS was grouped in two bands only; however, the physiological meaning is less clear.…”

“…In the case of the human EEG, theta is recorded during sleep or in the waking EEG after sleep deprivation simultaneous to performance deterioration, [30][31][32][33][34] whereas in rodents it accompanies alertness and motor activity. 28,29,35,36 One of the most used techniques for quantitative analysis of EEG is the Fourier Transform. This analysis gives, by decomposing a complex signal in series of sine and cosine waves, the energy or power (micv2) accumulated over a period of time for every frequency within a given (which depends on the sample length and the sampling rate), even if they are concealed from visual inspection.…”